javascript 应用小技巧方法

javascript 在前端应用体验小技巧继续积累。

  • 事件源对象 event.srcElement.tagName 
    event.srcElement.type
  • 捕获释放 event.srcElement.setCapture();  
    event.srcElement.releaseCapture(); 
  • 事件按键 event.keyCode event.shiftKey 
    event.altKey event.ctrlKey
  • 事件返回值 event.returnValue
  • 鼠标位置 event.x event.y
  • 窗体活动元素 document.activeElement
  • 绑定事件 
    document.captureEvents(Event.KEYDOWN);
  • 访问窗体元素 document.all("txt").focus(); 
    document.all("txt").select();
  • 窗体命令 document.execCommand
  • 窗体COOKIE document.cookie
  • 菜单事件 document.oncontextmenu
  • 创建元素 document.createElement("SPAN"); 
  • 根据鼠标获得元素: 
    document.elementFromPoint(event.x,event.y).tagName=="TD 
    document.elementFromPoint(event.x,event.y).appendChild(ms) 
  • 窗体图片 document.images[索引]
  • 窗体事件绑定 
    document.onmousedown=scrollwindow;
  • 元素 document.窗体.elements[索引]
  • 对象绑定事件 
    document.all.xxx.detachEvent('onclick',a);
  • 插件数目 navigator.plugins
  • 取变量类型 typeof($js_libpath) == "undefined"
  • 下拉框 下拉框.options[索引] 
    下拉框.options.length
  • 查找对象 document.getElementsByName("r1"); 
    document.getElementById(id);
  • 定时 
    timer=setInterval('scrollwindow()',delay); 
    clearInterval(timer);
  • UNCODE编码 escape() ,unescape
  • 父对象 obj.parentElement(dhtml) 
    obj.parentNode(dom)
  • 交换表的行 TableID.moveRow(2,1)

  • 替换CSS document.all.csss.href="http://handyxuefeng.blog.163.com/blog/a.css";

  • 并排显示 display:inline

  • 隐藏焦点 hidefocus=true
  • 根据宽度换行 
    style="word-break:break-all"

  • 自动刷新 <meta HTTP-EQUIV="refresh" CONTENT="8;URL=http://c98.yeah.net">
  • 简单邮件 <a  href="http://handyxuefeng.blog.163.com/blog/mailto:aaa@bbb.com?subject=ccc&body=xxxyyy"> 
  • 快速转到位置 
    obj.scrollIntoView(true)

  • 锚 <a name="first"> <a href="http://handyxuefeng.blog.163.com/blog/#first">anchors</a>
  • 网页传递参数 location.search();
  • 可编辑 obj.contenteditable=true
  • 执行菜单命令 obj.execCommand
  • 双字节字符 /[^\x00-\xff]/ 汉字 
    /[\一-\龥]/
  • 让英文字符串超出表格宽度自动换行word-wrap: break-word; word-break: break-all;
  • 透明背景 <IFRAME src="http://handyxuefeng.blog.163.com/blog/1.htm" width=300 height=180 allowtransparency></iframe>
  • 获得style内容 obj.style.cssText
  • HTML标签 
    document.documentElement.innerHTML
  • 第一个style标签 document.styleSheets[0]
  • style标签里的第一个样式 
    document.styleSheets[0].rules[0]
  • 防止点击空链接时,页面往往重置到页首端。 <a href="javascript:function()">word</a>
  • 上一网页源 asp: request.servervariables("HTTP_REFERER") 
    javascript: document.referrer
  • 释放内存 CollectGarbage();
  • 禁止右键document.oncontextmenu = function() { return false;}
  • 禁止保存 <noscript><iframe src="http://handyxuefeng.blog.163.com/blog/*.htm"></iframe></noscript>
  • 禁止选取<body oncontextmenu="return false" ondragstart="return false" onselectstart ="return false"onselect="document.selection.empty()" oncopy="document.selection.empty()" onbeforecopy="return false"onmouseup="document.selection.empty()>
  • 禁止粘贴 <input type=text onpaste="return false">
  • 地址栏图标 <link rel="Shortcut Icon" href="http://handyxuefeng.blog.163.com/blog/favicon.ico"> favicon.ico 名字最好不变16*16的16色,放虚拟目录根目录下
  • 收藏栏图标 <link rel="Bookmark" href="http://handyxuefeng.blog.163.com/blog/favicon.ico">
  • 查看源码 <input type=button value=查看网页源代码 onclick="window.location = 'view-source:'+ 'http://www.youkuaiyun.com/'">
  • 关闭输入法 <input style="ime-mode:disabled">
  • 自动全选<input type=text name=text1 value="123" onfocus="this.select()">
  • ENTER键可以让光标移到下一个输入框 <input onkeydown="if(event.keyCode==13)event.keyCode=9">
  • 文本框的默认值 <input type=text value="123" onfocus="alert(this.defaultValue)">
  • title换行 obj.title = "123&#13sdfs&#32"
  • 获得时间所代表的微秒 var n1 = new Date("2004-10-10".replace(/-/g, "\/")).getTime()
  • 窗口是否关闭 win.closed
  • checkbox扁平 <input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br>
  • 获取选中内容 
    document.selection.createRange().duplicate().text
  • 自动完成功能 <input  type=text  autocomplete=on>打开该功能  
    <input  type=text  autocomplete=off>关闭该功能   
  • 窗口最大化 <body onload="window.resizeTo(window.screen.width - 4,window.screen.height-50);window.moveTo(-4,-4)">
  • 无关闭按钮IE window.open("aa.htm", "meizz", "fullscreen=7");
  • 统一编码/解码 
    alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe"))) encodeURIComponent对":"、"/"、";" 和 "?"也编码
  • 表格行指示 <tr onmouseover="this.bgColor='#f0f0f0'" onmouseout="this.bgColor='#ffffff'">

    //各种尺寸

    s  +=   "\r\n网页可见区域宽:"+  document.body.clientWidth;   
    s  +=   "\r\n网页可见区域高:"+  document.body.clientHeight;   
    s  +=   "\r\n网页可见区域高:"+  document.body.offsetWeight  + "  (包括边线的宽)";   s  +=  "\r\n网页可见区域高:"+  document.body.offsetHeight  + "  (包括边线的宽)";   s  +=   "\r\n网页正文全文宽:"+  document.body.scrollWidth;   
    s  +=   "\r\n网页正文全文高:"+  document.body.scrollHeight;   
    s  +=   "\r\n网页被卷去的高:"+  document.body.scrollTop;   
    s  +=   "\r\n网页被卷去的左:"+  document.body.scrollLeft;   
    s  +=   "\r\n网页正文部分上:"+  window.screenTop;   
    s  +=   "\r\n网页正文部分左:"+  window.screenLeft;   
    s  +=   "\r\n屏幕分辨率的高:"+  window.screen.height;   
    s  +=   "\r\n屏幕分辨率的宽:"+  window.screen.width;   
    s  +=   "\r\n屏幕可用工作区高度:"+  window.screen.availHeight;   
    s  +=   "\r\n屏幕可用工作区宽度:"+  window.screen.availWidth;  

 

//过滤数字

<input type=text onkeypress= "return event.keyCode>=48&&event.keyCode<=57||(this.value.indexOf('.')<0?event.keyCode==46:false)" onpaste= "return !clipboardData.getData('text').match(/\D/)" ondragenter= "return false">

 

//特殊用途

<input type=button value=导入收藏夹 onclick= "window.external.ImportExportFavorites(true,'http://localhost');"<input type=button value=导出收藏夹 onclick= "window.external.ImportExportFavorites(false,'http://localhost');"><input type=button value=整理收藏夹 onclick= "window.external.ShowBrowserUI('OrganizeFavorites', null)"
<input type=button value=语言设置   onclick= "window.external.ShowBrowserUI('LanguageDialog', null)"
<input type=button value=加入收藏夹 onclick= "window.external.AddFavorite('http://www.google.com/', 'google')"<input type=button value=加入到频道 onclick= "window.external.addChannel('http://www.google.com/')"<input type=button value=加入到频道 onclick= "window.external.showBrowserUI('PrivacySettings',null)">

 

//不缓存

<META HTTP-EQUIV= "pragma" CONTENT= "no-cache"> <META HTTP-EQUIV= "Cache-Control" CONTENT= "no-cache, must-revalidate"
<META HTTP-EQUIV= "expires" CONTENT= "0">

 

 

//正则匹配

匹配中文字符的正则表达式: [\一-\龥] 
匹配双字节字符(包括汉字在内):[^\x00-\xff] 匹配空行的正则表达式:\n[\s| ]*\r 
匹配HTML标记的正则表达式:/<(.*)>.*<\/\1>|<(.*) \/>/  
匹配首尾空格的正则表达式:(^\s*)|(\s*$)(像vbscript那样的trim函数) 
匹配Email地址的正则表达式:\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)* 
匹配网址URL的正则表达式:http: //([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)? 以下是例子: 利用正则表达式限制网页表单里的文本框输入内容: 用正则表达式限制只能输入中文:onkeyup= "value=value.replace(/[^\一-\龥]/g,'')"onbeforepaste= "clipboardData.setData('text',clipboardData.getData('text').replace(/[^\一-\龥]/g,''))" 
1.用正则表达式限制只能输入全角字符: onkeyup= "value=value.replace(/[^\?-\?]/g,'')"onbeforepaste= "clipboardData.setData('text',clipboardData.getData('text').replace(/[^\?-\?]/g,''))" 
2.用正则表达式限制只能输入数字:onkeyup= "value=value.replace(/[^\d]/g,'') "onbeforepaste= "clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))" 
3.用正则表达式限制只能输入数字和英文:onkeyup= "value=value.replace(/[\W]/g,'') "onbeforepaste= "clipboardData.setData('text',clipboardData.getData('text').replace(/[^\d]/g,''))"

//消除图像工具栏

<IMG SRC="mypicture.jpg" HEIGHT="100px" WIDTH="100px" GALLERYIMG="false">  or <head> 
<meta http-equiv="imagetoolbar" content="no"> </head>

 

//无提示关闭

function Close() {  var ua=navigator.userAgent  var ie=navigator.appName== "Microsoft Internet Explorer"? true:false  if(ie) {        var IEversion=parseFloat(ua.substring(ua.indexOf( "MSIE ")+5,ua.indexOf( ";",ua.indexOf( "MSIE "))))    if(IEversion< 5.5)   {     var str  = '<object id=noTipClose classid= "clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">' 
       str += '<param name= "Command" value= "Close"></object>'; 
       document.body.insertAdjacentHTML( "beforeEnd", str); 
       document.all.noTipClose.Click();   }       else   { 
       window.opener = null
       window.close();       }    } else { 
  window.close()    } }

//取得控件得绝对位置(1)

<script language= "javascript">   function getoffset(e) {   var t=e.offsetTop;   varl=e.offsetLeft;   while(e=e.offsetParent) {  
  t+=e.offsetTop;    l+=e.offsetLeft;  }   var rec =  new  Array(1); 
rec[0]  = t; rec[1] = l;  return rec }   </script>

//获得控件的绝对位置(2)

oRect = obj.getBoundingClientRect(); 
oRect.left oRect.

//最小化,最大化,关闭

<object id=min classid= "clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">  
<param name= "Command" value= "Minimize"></object>  
<object id=max classid= "clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">  
<param name= "Command" value= "Maximize"></object>  
<OBJECT id=close classid= "clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11">  
<PARAM NAME= "Command" value= "Close"></OBJECT>  
<input type=button value=最小化 onclick=min.Click()>  
<input type=button value=最大化 onclick=max.Click()>  
<input type=button value=关闭 onclick=close.Click()> 

 

//光标停在文字最后

 

<script language= "javascript"function cc() {  var e = event.srcElement;  var r =e.createTextRange(); 
r.moveStart('character',e.value.length); r.collapse( true); r.select(); } </script> 
<input type=text name=text1 value= "123" onfocus= "cc()">

//页面进入和退出的特效

进入页面<meta http-equiv= "Page-Enter" content= "revealTrans(duration=x, transition=y)"
推出页面<meta http-equiv= "Page-Exit" content= "revealTrans(duration=x, transition=y)">  
这个是页面被载入和调出时的一些特效。duration表示特效的持续时间,以秒为单位。transition表示使 用哪种特效,取值为1-23: 
  0 矩形缩小    1 矩形扩大    2 圆形缩小   3 圆形扩大    4 下到上刷新  
  5 上到下刷新   6 左到右刷新    7 右到左刷新    8 竖百叶窗   9 横百叶窗  
  10 错位横百叶窗    11 错位竖百叶窗   12 点扩散    13 左右到中间刷新  
  14 中间到左右刷新   15 中间到上下   16 上下到中间    17 右下到左上   18 右上到左下  
  19 左上到右下    20 左下到右上   21 横条    22 竖条    23 

//网页是否被检索

<meta name= "ROBOTS" content= "属性值">   其中属性值有以下一些:   属性值为 "all": 文件将被检索,且页上链接可被查询;   属性值为 "none": 文件不被检索,而且不查询页上的链接;   属性值为 "index": 文件将被检索;   属性值为 "follow": 查询页上的链接;   属性值为 "noindex": 文件不检索,但可被查询链接;   属性值为 "nofollow"

 

//打印分页

<p  style= "page-break-after:always">page1</p>   
<p  style= "page-break-after:always">page2</p>  

 

//设置打印

<object id= "factory" style= "display:none" viewastext   classid= "clsid:1663ed61-23eb-11d2-b92f-008048fdd814" 
  codebase= "http://www.meadroid.com/scriptx/ScriptX.cab#Version=5,60,0,360" ></object> 
<input type=button value=页面设置 onclick= "factory.printing.PageSetup()"
<input type=button value=打印预览 onclick= "factory.printing.Preview()">   
<script language=javascript>  function window.onload() {     // -- advanced features    factory.printing.SetMarginMeasure(2)  // measure margins in inches    factory.printing.SetPageRange( false, 1, 3)  // need pages from 1 to 3    factory.printing.printer =  "HP DeskJet 870C" 
   factory.printing.copies = 2    factory.printing.collate = true 
   factory.printing.paperSize =  "A4" 
   factory.printing.paperSource =  "Manual feed"     // -- basic features    factory.printing.header =  "居左显示&b居中显示&b居右显示页码,第&p页/共&P页" 
   factory.printing.footer =  "(自定义页脚)" 
   factory.printing.portrait = false 
   factory.printing.leftMargin = 0.75 
   factory.printing.topMargin = 1.5 
   factory.printing.rightMargin = 0.75 
   factory.printing.bottomMargin = 1.5 }  function Print(frame) { 
  factory.printing.Print( true, frame)  // print with prompt } </script> 
<input type=button value= "打印本页" onclick= "factory.printing.Print(false)"
<input type=button value= "页面设置" onclick= "factory.printing.PageSetup()"
<input type=button value= "打印预览" onclick= "factory.printing.Preview()"><br> 
<a href= "http://www.meadroid.com/scriptx/docs/printdoc.htm?static"  target=_blank>具体使用手册,更多信息,点这里</a>

//自带的打印预览

WebBrowser.ExecWB(1,1) 打开  
Web.ExecWB(2,1) 关闭现在所有的IE窗口,并打开一个新窗口  Web.ExecWB(4,1) 保存网页  
Web.ExecWB(6,1) 打印  Web.ExecWB(7,1) 打印预览  Web.ExecWB(8,1) 打印页面设置  
Web.ExecWB(10,1) 查看页面属性  Web.ExecWB(15,1) 好像是撤销,有待确认  
Web.ExecWB(17,1) 全选  Web.ExecWB(22,1) 刷新  Web.ExecWB(45,1) 关闭窗体无提示  
<style media=print>  
.Noprint{display:none;}<!--用本样式在打印时隐藏非打印项目-->  
.PageNext{page-break-after: always;}<!--控制分页-->  </style>  
<object  id= "WebBrowser"  width=0  height=0  classid= "CLSID:8856F961-340A-11D0-A96B-00C04FD705A2">     
</object>       <center class= "Noprint" > 
<input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)>  
<input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)>  
<input type=button value=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)>  
</p>  
<p> <input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)>  
</center>

//去掉打印时的页眉页脚

<script  language= "JavaScript">    var HKEY_Root,HKEY_Path,HKEY_Key; 
HKEY_Root= "HKEY_CURRENT_USER"
HKEY_Path= "\\Software\\Microsoft\\Internet Explorer\\PageSetup\\"
//设置网页打印的页眉页脚为空  function PageSetup_Null() { try { 
          var Wsh= new  ActiveXObject( "WScript.Shell");   HKEY_Key= "header"
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key, "");   HKEY_Key= "footer"
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key, ""); }  catch(e){} }  //设置网页打印的页眉页脚为默认值 function  PageSetup_Default() {   try 
{    var Wsh= new  ActiveXObject( "WScript.Shell");   HKEY_Key= "header"
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key, "&w&b页码,&p/&P"); 
  HKEY_Key= "footer"
  Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key, "&u&b&d"); }  catch(e){} } </script> 
<input type= "button" value= "清空页码" onclick=PageSetup_Null()> 
<input type= "button" value= "恢复页码" onclick=PageSetup_Default()>

//浏览器验证

function checkBrowser() {      this.ver=navigator.appVersion     this.dom=document.getElementById?1:0      this.ie6=( this.ver.indexOf( "MSIE 6")>-1 &&  this.dom)?1:0;      this.ie5=( this.ver.indexOf( "MSIE 5")>-1 &&  this.dom)?1:0;      this.ie4=(document.all && ! this.dom)?1:0;      this.ns5=( this.dom && parseInt( this.ver) >= 5) ?1:0;      this.ns4=(document.layers && ! this.dom)?1:0;      this.mac=( this.ver.indexOf('Mac') > -1) ?1:0;  
    this.ope=(navigator.userAgent.indexOf('Opera')>-1);  
    this.ie=( this.ie6 ||  this.ie5 ||  this.ie4)      this.ns=( this.ns4 ||  this.ns5)      this.bw=( this.ie6 ||  this.ie5 ||  this.ie4 ||  this.ns5 ||  this.ns4 ||  this.mac ||  this.ope)     this.nbw=(! this.bw)      return  this
}

//计算内容宽和高

<SCRIPT  language= "javascript">    function  test(obj)   {           var  range  =  obj.createTextRange();   
       alert( "内容区宽度:  "  +  range.boundingWidth     
                                                 +   "px\r\n内容区高度:  "  +  range.boundingHeight  +   "px");                 }   
</SCRIPT>   <BODY>   <Textarea id= "txt" height= "150">sdf</textarea><INPUT  type= "button"  value= "计算内容宽度"  onClick= "test(txt)">   </BODY>

//无模式的提示框

function modelessAlert(Msg) { 
   window.showModelessDialog( "javascript:alert(\""+escape(Msg)+ "\");window.close();", "", "status:no;resizable:no;help:no;dialogHeight:height:30px;dialogHeight:40px;"); 
}

 

//屏蔽按键

 

<html> 
<head>   <meta http-equiv= "Content-Type" content= "text/html; charset=gb2312"
  <noscript><meta http-equiv= "refresh" content= "0;url=about:noscript"></noscript> 
  <title>屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键</title> 
</head> <body> <script language= "Javascript"><!--    //屏蔽鼠标右键、Ctrl+N、Shift+F10、F11、F5刷新、退格键    //Author: meizz(梅花雨) 2002-6-18  function document.oncontextmenu(){event.returnValue= false;} //屏蔽鼠标右键  function window.onhelp(){ return  false//屏蔽F1帮助 function document.onkeydown() 
{    if ((window.event.altKey)&& 
      ((window.event.keyCode==37)||    //屏蔽 Alt+ 方向键 ←        (window.event.keyCode==39)))    //屏蔽 Alt+ 方向键 →   {      alert( "不准你使用ALT+方向键前进或后退网页!"); 
     event.returnValue= false;   } 
      /* 注:这还不是真正地屏蔽 Alt+ 方向键, 
     因为 Alt+ 方向键弹出警告框时,按住 Alt 键不放,      用鼠标点掉警告框,这种屏蔽方法就失效了。以后若 
     有哪位高手有真正屏蔽 Alt 键的方法,请告知。*/
    if ((event.keyCode==8)  ||                  //屏蔽退格删除键       (event.keyCode==116)||                  //屏蔽 F5 刷新键       (event.ctrlKey && event.keyCode==82)){  //Ctrl + R      event.keyCode=0; 
     event.returnValue= false;      } 
   if (event.keyCode==122){event.keyCode=0;event.returnValue= false;}   //屏蔽F11    if(event.ctrlKey && event.keyCode==78) event.returnValue= false;    //屏蔽 Ctrl+n    if(event.shiftKey && event.keyCode==121)event.returnValue= false;   //屏蔽 shift+F10    if(window.event.srcElement.tagName ==  "A" && window.event.shiftKey)  
      window.event.returnValue =  false;              //屏蔽 shift 加鼠标左键新开一网页    if((window.event.altKey)&&(window.event.keyCode==115))              //屏蔽Alt+F4   { 
      window.showModelessDialog( "about:blank", "", "dialogWidth:1px;dialogheight:1px"); 
       return  false;   } } </script> 
屏蔽鼠标右键、Ctrl+N、Shift+F10、Alt+F4、F11、F5刷新、退格键 </body> 
</html>

//屏蔽打印 <style> @media print{ * {display:none} } </style>

//移动的图层,拖动

1.<span style='position:absolute;width:200;height:200;background:red' onmousedown=MouseDown( this) onmousemove=MouseMove() onmouseup=MouseUp()>meizz</span> 
<script language=javascript>  var Obj;  function MouseDown(obj) {   Obj=obj; 
  Obj.setCapture();   Obj.l=event.x-Obj.style.pixelLeft; 
  Obj.t=event.y-Obj.style.pixelTop; }  function MouseMove() {    if(Obj!= null
  {     Obj.style.left = event.x-Obj.l; 
    Obj.style.top = event.y-Obj.t;   } }  function MouseUp() {    if(Obj!= null
  {     Obj.releaseCapture();     Obj= null;   } } </script> 2. 
<div id= "myDiv" src= "logo.gif" ondrag= "doDrag();" onmouseover= "this.style.cursor='hand'"style= "position:absolute;left=100;top=100;" onmousedown= "doMouseDown();"> <a href= "#"onclick= "return false"><h1>wlecome</h1></a> 
</div> <script language= "JavaScript" type= "text/javascript"var orgMouseX;  var orgMouseY;  varorgObjX;  var orgObjY;  function doDrag() {  var myObject=document.all.myDiv; 
var x=event.clientX;  var y=event.clientY; 
myObject.style.left=x-(orgMouseX-orgObjX); 
myObject.style.top=y-(orgMouseY-orgObjY);   }  function doMouseDown() { 
orgMouseX=event.clientX; orgMouseY=event.clientY; 
orgObjX=parseInt(document.all.myDiv.style.left); 
orgObjY=parseInt(document.all.myDiv.style.top); } 
</script>

//文档状态改变

<iframe src= "a.html" id= "f" name= "f" scrolling= "no" frameborder=0 marginwidth=0 marginheight=0></iframe> 
<script>  var doc=window.frames[ "f"].document;  function s(){  if (doc.readyState== "complete"){ 
  document.all.f.style.height=doc.body.scrollHeight 
  document.all.f.style.width=doc.body.scrollWidth } } 
doc.onreadystatechange=s </script>

//刷新后不变的文本框

<HTML> 
<HEAD> <META NAME= "save" CONTENT= "history"> <STYLE> 
   .sHistory {behavior:url(#default#savehistory);} </STYLE> 
</HEAD> <BODY> 
<INPUT class="sHistory" type=text id=oPersistInput> </BODY> 
</HTML>

 

//访问剪贴板

(1)拖拽访问 
event.dataTransfer.setData( "URL", oImage.src); 
sImageURL = event.dataTransfer.getData( "URL") (2)普通访问 
window.clipboardData.setData( "Text",oSource.innerText); 
window.clipboardData.getData( "Text");

 

//操作COOKIE

function SetCookie(sName, sValue) { 
document.cookie = sName +  "=" + escape(sValue) +  "; "; }  function GetCookie(sName) {  varaCookie = document.cookie.split( "; "); for ( var i=0; i < aCookie.length; i++) {    
   var aCrumb = aCookie[i].split( "=");    if (sName == aCrumb[0])     return unescape(aCrumb[1]); }   } 
function DelCookie(sName) { 
document.cookie = sName +  "=" + escape(sValue) +  "; expires=Fri, 31 Dec 1999 23:59:59 GMT;"; }

//setTimeout增加参数

<script> 
var _st = window.setTimeout; 
window.setTimeout =  function(fRef, mDelay) {  if(typeof fRef == ' function'){    var argu = Array.prototype.slice.call(arguments,2); 
   var f = ( function(){ fRef.apply( null, argu); });    return _st(f, mDelay); }  return_st(fRef,mDelay); }  function test(x){ alert(x); } 
window.setTimeout(test,1000,'fason'); </script>

//自定义的apply,call

Function.prototype.apply =  function (obj, argu) {  if (obj) obj.constructor.prototype._caller = this;   var argus =  new  Array(); 
for ( var i=0;i<argu.length;i++) 
  argus[i] =  "argu[" + i +  "]"var r; eval( "r = " + (obj ? ( "obj._caller(" + argus.join( ",") +  ");") : ( "this(" + argus.join( ",") +  ");")));  return r; }; 
Function.prototype.call =  function (obj) {  var argu =  new  Array(); 
for ( var i=1;i<arguments.length;i++) 
  argu[i-1] = arguments[i];  return  this.apply(obj, argu); };       

//下载文件

function DownURL(strRemoteURL,strLocalURL) { 
try {    var xmlHTTP= new  ActiveXObject( "Microsoft.XMLHTTP");   xmlHTTP.open( "Get",strRemoteURL, false);   xmlHTTP.send();    var adodbStream= new ActiveXObject( "ADODB.Stream");   adodbStream.Type=1; //1=adTypeBinary   adodbStream.Open(); 
  adodbStream.write(xmlHTTP.responseBody); 
  adodbStream.SaveToFile(strLocalURL,2);   adodbStream.Close(); 
  adodbStream= null;   xmlHTTP= null;    }  catch(e) {   window.confirm( "下载URL出错!"); } //window.confirm("下载完成."); }

//检验连接是否有效

function getXML(URL)  {  var xmlhttp =  new  ActiveXObject( "microsoft.xmlhttp"); xmlhttp.Open( "GET",URL,  false);  try {    xmlhttp.Send(); 
catch(e){}  finally  {    var result = xmlhttp.responseText;    if(result)    {    if(xmlhttp.Status==200)    {      return( true); 
   }     else     {      return( false); 
   }   }    else    { 
    return( false);   } } }

//POST代替FORM

<SCRIPT language= "VBScript"> Function URLEncoding(vstrIn) 
    strReturn =  "" 
    For i = 1 To Len(vstrIn)         ThisChr = Mid(vStrIn,i,1) 
        If Abs(Asc(ThisChr)) < &HFF Then 
            strReturn = strReturn & ThisChr         Else 
            innerCode = Asc(ThisChr) 
            If innerCode < 0 Then 
                innerCode = innerCode + &H10000             End If 
            Hight8 = (innerCode  And &HFF00)\ &HFF 
            Low8 = innerCode And &HFF 
            strReturn = strReturn &  "%" & Hex(Hight8) &   "%" & Hex(Low8)         End If 
    Next     URLEncoding = strReturn End Function 
Function bytes2BSTR(vIn)     strReturn =  ""     For i = 1 To LenB(vIn) 
        ThisCharCode = AscB(MidB(vIn,i,1)) 
        If ThisCharCode < &H80 Then 
            strReturn = strReturn & Chr(ThisCharCode)         Else 
            NextCharCode = AscB(MidB(vIn,i+1,1)) 
            strReturn = strReturn & Chr(CLng(ThisCharCode) * &H100 + CInt(NextCharCode)) 
            i = i + 1         End If     Next 
    bytes2BSTR = strReturn End Function dim strA,oReq 
strA = URLEncoding( "submit1=Submit&text1=中文"
set oReq = CreateObject( "MSXML2.XMLHTTP") oReq.open "POST", "http://ServerName/VDir/TstResult.asp",false oReq.setRequestHeader  "Content-Length",Len(strA) 
oReq.setRequestHeader  "CONTENT-TYPE", "application/x-www-form-urlencoded" 
oReq.send strA msgbox bytes2BSTR(oReq.responseBody) </SCRIPT>

//readyState是xmlhttp返回数据的进度,0=载入中,1=未初始化,2=已载入,3=运行中,4=完成

 

 

//组件是否安装 
isComponentInstalled("{6B053A4B-A7EC-4D3D-4567-B8FF8A1A5739}", "componentID"))

//检查网页是否存在

function CheckURL(URL) {    var xmlhttp =  new  ActiveXObject( "Microsoft.XMLHTTP");   xmlhttp.Open( "GET",URL,  false);   try   {  
    xmlhttp.Send();       var result = xmlhttp.status;   }    catch(e) { return( false); }   if(result==200)   {       return  true
  }   xmlhttp =  null;    return  false
}

//连接数据库

<script language= "javascript">    //用 JavaScript 写服务器端连接数据库的代码示例    var conn =  new ActiveXObject( "ADODB.Connection");   conn.Open( "Provider=SQLOLEDB.1; Data Source=localhost; User ID=sa; " 
    + "Password=; Initial Catalog=pubs"); 
   var rs =  new  ActiveXObject( "ADODB.Recordset");    var sql= "select * from authors";   rs.open(sql, conn); 
shtml =  "<table width='100%' border=1>"
shtml += "<tr bgcolor='#f4f4f4'><td>au_id</td><td>au_lname</td><td>au_fname</td><td>phone</td><td>address</td><td> city</td><td>state</td><td>zip</td></tr>"
   while(!rs.EOF)   { 
shtml +=  "<tr><td>" + rs( "au_id") +  "</td><td>" + rs( "au_lname") +  "</td><td>" + rs( "au_fname") +  "</td><td>" + rs( "phone") +  "</td><td>" + rs( "address") +  "</td><td>" + rs( "city") +  "</td><td>" + rs( "state") +  "</td><td>" + rs( "zip") +  "</td></tr>"; rs.moveNext; 
  }   shtml +=  "</table>"
  document.write(shtml);   rs.close();    rs =  null;    conn.close();    conn =  null; </script>

//使用数据岛

<html> 
<body> 
srno:<input type=text datasrc=#xmldate DataFLD=srno size= "76"><BR> 
times:<input type=text datasrc=#xmldate DataFLD=times size= "76"><BR> <input id= "first"TYPE=button value= "<< 第一条记录" onclick= "xmldate.recordset.moveFirst()"
<input id= "prev" TYPE=button value= "<上一条记录" onclick= "xmldate.recordset.movePrevious()">   
<input id= "next" TYPE=button value= "下一条记录>" onclick= "xmldate.recordset.moveNext()">   
<input id= "last" TYPE=button value= "最后一条记录>>" onclick= "xmldate.recordset.moveLast()">    
<input id= "Add" TYPE=button value= "添加新记录" onclick= "xmldate.recordset.addNew()">   
<XML ID= "xmldate"
<infolist> 
<info ><srno>20041025-01</srno><times> null</times></info> 
<info ><srno>20041101-09</srno><times>2004年10月1日2点22分0秒</times></info> 
</infolist> </XML> </body> </html>

//获得参数

<body> 
<a href= "javascript:location.href=location.href + '?a=1&b=2'">search</a> 
<script language= "JavaScript"
<!--  var a = location.search.substr(1);  if(a.length>0) {  var re = /([^&]*?)\=([^&]*)/g  var s = a.match(re); for( var i= 0;i<s.length;i++) { 
  alert(s[i]);   alert(s[i].split( "=")[1]); } }  //--> </script> </body>

//可编辑SELECT

<input type=text name=re_name style= "width:100px;height:21px;font-size:10pt;"><span style= "width:18px;border:0px solid red;"><select name= "r00" style= "margin-left:-100px;width:118px; background-color:#FFEEEE;"onChange= "document.all.re_name.value=this.value;"
                <option value= "1">11111111<option> 
                <option value= "2">222222</option> 
                <option value= "3">333333</option> 
              </select>               </span>

 

//设置光标位置

function getCaret(textbox) {  var control = document.activeElement; 
textbox.focus();  var rang = document.selection.createRange(); 
  rang.setEndPoint( "StartToStart",textbox.createTextRange()) 
control.focus();  return rang.text.length; }  function setCaret(textbox,pos) { try 
{    var r =textbox.createTextRange(); 
   r.moveStart('character',pos);    r.collapse( true);    r.select(); }  catch(e) {} }  functionselectLength(textbox,start,len) { 
try {    var r =textbox.createTextRange();   
  r.moveEnd('character',len-(textbox.value.length-start)); 
  r.moveStart('character',start);      r.select(); }  catch(e) { //alert(e.description)} } function insertAtCaret(textbox,text) { 
textbox.focus(); document.selection.createRange().text = text; }

//页内查找

function findInPage(str) {  var txt, i, found,n = 0;  if (str ==  ""
{    return  false; } 
txt = document.body.createTextRange(); 
for (i = 0; i <= n && (found = txt.findText(str)) !=  false; i++) {   txt.moveStart( "character", 1);   txt.moveEnd( "textedit"); }  if (found) {   txt.moveStart( "character", -1);   txt.findText(str); 
  txt.select();   txt.scrollIntoView();   n++;   } else 
{    if (n > 0)   { 
   n = 0;    findInPage(str);   }   else   { 
   alert(str +  "...            您要找的文字不存在。\n \n请试着输入页面中的关键字再次查找!"); 
  } }  return  false; }

//书

<script language= "javascript"function jStartExcel() {  var xls =  new  ActiveXObject ( "Excel.Application" ); xls.visible =  truevar newBook = xls.Workbooks.Add; 
newBook.Worksheets.Add; newBook.Worksheets(1).Activate; 
xls.ActiveWorkBook.ActiveSheet.PageSetup.Orientation = 2; 
xls.ActiveWorkBook.ActiveSheet.PageSetup.PaperSize = 5; 
newBook.Worksheets(1).Columns( "A").columnwidth=50; 
newBook.Worksheets(1).Columns( "A").WrapText =  true; newBook.Worksheets(1).Columns( "B").columnwidth=50; 
newBook.Worksheets(1).Columns( "B").WrapText =  true; newBook.Worksheets(1).Range( "A1:B1000").NumberFormat =  "0"; newBook.Worksheets(1).Range( "A1:B1000").HorizontalAlignment = -4131; 
newBook.Worksheets(1).Cells(1,1).Interior.ColorIndex= "15"
newBook.Worksheets(1).Cells(1,1).value= "First Column, First Cell"
newBook.Worksheets(1).Cells(2,1).value= "First Column, Second Cell"
newBook.Worksheets(1).Cells(1,2).value= "Second Column, First Cell"
newBook.Worksheets(1).Cells(2,2).value= "Second Column, Second Cell"
newBook.Worksheets(1).Name= "My First WorkSheet"; } </script>

//自定义提示条

<a href= "#" title= "这是提示">tip</a> 
<script Language= "JavaScript"
//***********默认设置定义.********************* tPopWait=50; //停留tWait豪秒后显示提示。tPopShow=5000; //显示tShow豪秒后关闭提示 showPopStep=20; popOpacity=99;  //***************内部变量定义***************** sPop= null; curShow= null; tFadeOut= null; tFadeIn= null; tFadeWaiting= null; document.write( "<style type='text/css'id='defaultPopStyle'>"); 
document.write( ".cPopText {  background-color: #F8F8F5;color:#000000; border: 1px #000000 solid;font-color: font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; filter: Alpha(Opacity=0)}"); 
document.write( "</style>"); 
document.write( "<div id='dypopLayer' style='position:absolute;z-index:1000;' class='cPopText'></div>"); 
function showPopupText(){  var o=event.srcElement; MouseX=event.x; 
MouseY=event.y;  if(o.alt!= null && o.alt!= ""){o.dypop=o.alt;o.alt= ""};          if(o.title!= null&& o.title!= ""){o.dypop=o.title;o.title= ""};  if(o.dypop!=sPop) { sPop=o.dypop; 
clearTimeout(curShow); clearTimeout(tFadeOut); 
clearTimeout(tFadeIn); clearTimeout(tFadeWaiting);  if(sPop== null || sPop== "") { dypopLayer.innerHTML= ""; dypopLayer.style.filter= "Alpha()"; dypopLayer.filters.Alpha.opacity=0; 
else {  if(o.dyclass!= null) popStyle=o.dyclass   else popStyle= "cPopText"; curShow=setTimeout( "showIt()",tPopWait); } } }  function showIt(){ 
dypopLayer.className=popStyle; dypopLayer.innerHTML=sPop; 
popWidth=dypopLayer.clientWidth; popHeight=dypopLayer.clientHeight; 
if(MouseX+12+popWidth>document.body.clientWidth) popLeftAdjust=-popWidth-24 
else popLeftAdjust=0;  if(MouseY+12+popHeight>document.body.clientHeight) popTopAdjust=-popHeight-24 
else popTopAdjust=0; 
dypopLayer.style.left=MouseX+12+document.body.scrollLeft+popLeftAdjust; 
dypopLayer.style.top=MouseY+12+document.body.scrollTop+popTopAdjust; 
dypopLayer.style.filter= "Alpha(Opacity=0)"; fadeOut(); }  function fadeOut(){ if(dypopLayer.filters.Alpha.opacity<popOpacity) { 
dypopLayer.filters.Alpha.opacity+=showPopStep; tFadeOut=setTimeout( "fadeOut()",1); }  else { 
dypopLayer.filters.Alpha.opacity=popOpacity; 
tFadeWaiting=setTimeout( "fadeIn()",tPopShow); } }  function fadeIn(){ if(dypopLayer.filters.Alpha.opacity>0) { 
dypopLayer.filters.Alpha.opacity-=1; tFadeIn=setTimeout( "fadeIn()",1); } } 
document.onmouseover=showPopupText; </script>

//插入文字

document.onclick = function(){   var oSource = window.event.srcElement;  if(oSource.tagName!= "DIV")   return  false;  
var sel = document.selection;   if (sel!= null) {   var rng = sel.createRange();   if (rng!= null)  rng.pasteHTML( "<font color=red>插入文字</font>");  
}  } 

//netscapte下操作xml

doc =  new  ActiveXObject( "Msxml2.DOMDocument"); doc =  new  ActiveXObject( "Microsoft.XMLDOM") ->> doc = ( new DOMParser()).parseFromString(sXML,'text/xml')

 

//判断键值

<html> 
<meta http-equiv= "Content-Type" content= "text/html; charset=gb2312"> <head> 
<script language= "javascript"
var ie  =navigator.appName== "Microsoft Internet Explorer"? true: false
    function keyDown(e) { 
if(!ie) {    var nkey=e.which;    var iekey='现在是ns浏览器';    varrealkey= String.fromCharCode(e.which); }  if(ie) {    var iekey=event.keyCode;    var nkey='现在是ie浏览器';    var realkey= String.fromCharCode(event.keyCode);    if(event.keyCode==32){realkey='\' 空格\''} 
   if(event.keyCode==13){realkey='\' 回车\''} 
   if(event.keyCode==27){realkey='\' Esc\''} 
   if(event.keyCode==16){realkey='\' Shift\''} 
   if(event.keyCode==17){realkey='\' Ctrl\''} 
   if(event.keyCode==18){realkey='\' Alt\''} } 
alert('ns浏览器中键值:'+nkey+'\n'+'ie浏览器中键值:'+iekey+'\n'+'实际键为'+realkey); } 
document.onkeydown = keyDown; </script> </head> 
<body>  //Javascript Document. <hr> <center> <h3>请按任意一个键。。。。</h3> 
</center> </body> </html>

 

//禁止FSO

1.注销组件 
regsvr32 /u scrrun.dll 2.修改PROGID  
HKEY_CLASSES_ROOT\Scripting.FileSystemObject Scripting.FileSystemObject 
3.对于使用object的用户,修改HKEY_CLASSES_ROOT\Scripting.

//省略号

<DIV STYLE= "width: 120px; height: 50px; border: 1px solid blue; 
            overflow: hidden; text-overflow:ellipsis"

<NOBR>就是比如有一行文字,很长,表格内一行显示不下.</NOBR> </DIV>

 

//检测media play版本

<IE:clientCaps ID= "oClientCaps" style= "{behavior:url(#default#clientcaps)}" /> 
<SCRIPT>  var flash= ""
    WMPVersion= oClientCaps.getComponentVersion( "{22D6F312-B0F6-11D0-94AB-0080C74C7E95}", "ComponentID");       if (WMPVersion !=  "") {     flash =  "";      var version = WMPVersion.split( ",");      var i; 
    for (i = 0; i < version.length; i++) {        if (i != 0)     flash +=  ".";       flash += version[i];     } 
     document.write( "您的Windows Media Player 版本是:"+flash+ "<p>");   } </SCRIPT>

 

//图象按比例

<script language= "JavaScript"> <!--  //图片按比例缩放  var flag= falsefunction DrawImage(ImgD){ var image= new Image();  var iwidth = 80;   //定义允许图片宽度  var iheight = 80;   //定义允许图片高度image.src=ImgD.src;  if(image.width>0 && image.height>0){ 
flag= trueif(image.width/image.height>= iwidth/iheight){ 
   if(image.width>iwidth){   
  ImgD.width=iwidth;   ImgD.height=(image.height*iwidth)/image.width; 
  } else{   ImgD.width=image.width;   
  ImgD.height=image.height;   }   ImgD.alt=image.width+ "×"+image.height;   }  else{   if(image.height>iheight){   
  ImgD.height=iheight; 
  ImgD.width=(image.width*iheight)/image.height;     } else{   ImgD.width=image.width;   
  ImgD.height=image.height;   }   ImgD.alt=image.width+ "×"+image.height;   } } }   //--></script> <img src= ".." onload =  "DrawImage(this)">

 

//细线SELECT 

< span style="border:1px solid #000000; position:absolute; overflow:hidden;" 
< select style="margin:-2px;"> < option>1111< /option
< option>11111111111111< /option
< option>111111111< /option
< /select>< /span>

//Import

function Import() { for(  var i=0; i<arguments.length; i++ ) { 
   var file = arguments[i];    if ( file.match(/\.js$/i))  
   document.write('<script type=\"text/javascript\ " src=\"' + file + '\"></sc' + 'ript>'); 
  else 
   document.write('<style type=\"text/css\"
>@import \"' + file + '\" ;</style>'); 
} };

//js枚举

function getComputerName() {  var objWMIService = GetObject( "Winmgmts:root\cimv2"); for(e =  newEnumerator(objWMIService) ; !e.atEnd() ; e.moveNext()) 
{      var getComputer = e.item(); 
     return getComputer.Name; } 
}

//条件编译

<script language=javascript> 
/*@cc_on @*/  /*@if (@_win32 && @_jscript_version>5) 
function window.confirm(str) { 
    execScript("n = msgbox('"+ str +"', 257)", "vbscript"); 
    return(n == 1); } @end @*/
 </script>

//取得innerText

 

<SCRIPT LANGUAGE= "JavaScript"> <!--  var xmlDoc =  new  ActiveXObject( "Msxml2.DOMDocument.4.0"); var currNode; xmlDoc.async =  false; xmlDoc.async =  false; xmlDoc.loadXML( "<TABLENAME>      你好你阿三    大法     司法等四              </TABLENAME>"); 
currNode = xmlDoc.documentElement;        var s = currNode.xml;    var r = /\<([^\>\s]*?)[^\>]*?\>([^\<]*?)\<\/\1\>/ 
   var b = s.replace(r, "$2");   alert(b);  //--> </SCRIPT>

//mergeAttributes 复制所有读/写标签属性到指定元素。

<SCRIPT> 
function fnMerge(){ 
oSource.children[1].mergeAttributes(oSource.children[0]); } 
</SCRIPT> <SPAN ID=oSource> <DIV ID= "oDiv" ATTRIBUTE1= "true" ATTRIBUTE2= "true"onclick= "alert('click');" onmouseover= "this.style.color='#0000FF';"onmouseout= "this.style.color='#000000';" > 
This is a sample <B>DIV</B> element. </DIV> 
<DIV ID= "oDiv2"
This is another sample <B>DIV</B> element. </DIV> 
</SPAN> <INPUT TYPE= "button" VALUE= "Merge Attributes" onclick= "fnMerge()" >

评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值