- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
- <meta http-equiv="Content-Language" content="zh-CN" />
- <title>用javascript美化Select</title>
- <script type="text/javascript">
- var childCreate=false;
- function Offset(e)
- //取标签的绝对位置
- {
- var t = e.offsetTop;
- var l = e.offsetLeft;
- var w = e.offsetWidth;
- var h = e.offsetHeight-2;
- while(e=e.offsetParent)
- {
- t+=e.offsetTop;
- l+=e.offsetLeft;
- }
- return {
- top : t,
- left : l,
- width : w,
- height : h
- }
- }
- function loadSelect(obj){
- //第一步:取得Select所在的位置
- var offset=Offset(obj);
- //第二步:将真的select隐藏
- obj.style.display="none";
- //第三步:虚拟一个div出来代替select
- var iDiv = document.createElement("div");
- iDiv.id="selectof" + obj.name;
- iDiv.style.position = "absolute";
- iDiv.style.width=offset.width + "px";
- iDiv.style.height=offset.height + "px";
- iDiv.style.top=offset.top + "px";
- iDiv.style.left=offset.left + "px";
- iDiv.style.background="url(/articleimg/2007/04/4687/icon_select.gif) no-repeat right 4px";
- iDiv.style.border="1px solid #3366ff";
- iDiv.style.fontSize="12px";
- iDiv.style.lineHeight=offset.height + "px";
- iDiv.style.textIndent="4px";
- document.body.appendChild(iDiv);
- //第四步:将select中默认的选项显示出来
- var tValue=obj.options[obj.selectedIndex].innerHTML;
- iDiv.innerHTML=tValue;
- //第五步:模拟鼠标点击
- iDiv.onmouseover=function(){//鼠标移到
- iDiv.style.background="url(/articleimg/2007/04/4687/icon_select_focus.gif) no-repeat right 4px";
- }
- iDiv.onmouseout=function(){//鼠标移走
- iDiv.style.background="url(/articleimg/2007/04/4687/icon_select.gif) no-repeat right 4px";
- }
- iDiv.onclick=function(){//鼠标点击
- if (document.getElementById("selectchild" + obj.name)){
- //判断是否创建过div
- if (childCreate){
- //判断当前的下拉是不是打开状态,如果是打开的就关闭掉。是关闭的就打开。
- document.getElementById("selectchild" + obj.name).style.display="none";
- childCreate=false;
- }else{
- document.getElementById("selectchild" + obj.name).style.display="";
- childCreate=true;
- }
- }else{
- //初始一个div放在上一个div下边,当options的替身。
- var cDiv = document.createElement("div");
- cDiv.id="selectchild" + obj.name;
- cDiv.style.position = "absolute";
- cDiv.style.width=offset.width + "px";
- cDiv.style.height=obj.options.length *20 + "px";
- cDiv.style.top=(offset.top+offset.height+2) + "px";
- cDiv.style.left=offset.left + "px";
- cDiv.style.background="#f7f7f7";
- cDiv.style.border="1px solid silver";
- var uUl = document.createElement("ul");
- uUl.id="uUlchild" + obj.name;
- uUl.style.listStyle="none";
- uUl.style.margin="0";
- uUl.style.padding="0";
- uUl.style.fontSize="12px";
- cDiv.appendChild(uUl);
- document.body.appendChild(cDiv);
- childCreate=true;
- for (var i=0;i<obj.options.length;i++){
- //将原始的select标签中的options添加到li中
- var lLi=document.createElement("li");
- lLi.id=obj.options[i].value;
- lLi.style.textIndent="4px";
- lLi.style.height="20px";
- lLi.style.lineHeight="20px";
- lLi.innerHTML=obj.options[i].innerHTML;
- uUl.appendChild(lLi);
- }
- var liObj=document.getElementById("uUlchild" + obj.name).getElementsByTagName("li");
- for (var j=0;j<obj.options.length;j++){
- //为li标签添加鼠标事件
- liObj[j].onmouseover=function(){
- this.style.background="gray";
- this.style.color="white";
- }
- liObj[j].onmouseout=function(){
- this.style.background="white";
- this.style.color="black";
- }
- liObj[j].onclick=function(){
- //做两件事情,一是将用户选择的保存到原始select标签中,要不做的再好看表单递交后也获取不到select的值了。
- obj.options.length=0;
- obj.options[0]=new Option(this.innerHTML,this.id);
- //同时我们把下拉的关闭掉。
- document.getElementById("selectchild" + obj.name).style.display="none";
- childCreate=false;
- iDiv.innerHTML=this.innerHTML;
- }
- }
- }
- }
- }
- </script>
- <style type="text/css">
- select{width:200px;height:20px;}
- </style>
- </head>
- <body>
- <h1>用javascript模拟select达到美化效果</h1>
- <form name="f">
- <fieldset>
- <legend>用户注册</legend>
- <div>
- <label for="username">帐号</label>
- <input type="text" id="username" name="username" />
- </div>
- <div>
- <label for="pwd">密码</label>
- <input type="password" name="pwd" id="pwd" />
- </div>
- <div>
- <label for="province">省份</label>
- <select id="province" name="province">
- <option value="10">江西</option>
- <option value="11">福建</option>
- <option value="12">广东</option>
- <option value="13">浙江</option>
- </select>
- </div>
- </fieldset>
- <input type="submit" value="提交" name="btnSub" />
- </form>
- <script type="text/javascript">
- loadSelect(document.f.province);
- </script>
- <p>
- <a href="http://www.iwcn.net">作者博客</a>
- </p>
- </body>
- </html>
用javascript模拟的select选择框
最新推荐文章于 2023-06-04 12:58:00 发布