javascript常用方法[原创]（不断更新中...）

1、刷新整个框架，并返回框架首页：

<script language='javascript'>window.parent.location.reload(); </script>

2、刷新框架中指定页面：

<script language='javascript'>window.parent.frames.子框架名称.location.reload(); </script>

3、将指定框架加载此页所在目录上级目录中指定页面：

<script language='javascript'>window.parent.frames.子框架名称.location.href=\"../Navigation.aspx\"; </script>"

4、按钮点击后，弹出询问对话框

//btnAdd按钮名
btnAdd.Attributes.Add("onclick","javascript:return confirm('是否增加公司部门信息记录?');"); 

5、用js怎么知道选择了TabStrip 的那个Tab页面。TabStrip是微软的控件。

function tabSelectTemp.onselectedindexchange()
{                
    TabIndex = event.index;
    if(TabIndex==1)//如果是第一个tab页
            document.all['frmPage'].src="SymptomDialog.aspx";            else          //如果不是第一个tab页
           document.all['frmPage'].src="ProductList.aspx";
}

6、弹出确定对话框

string msg = "警告";
Response.Write("<script>alert(\"" + msg + "\");</script>");

7、彈出一個窗口提示用戶,等處理完成后再關閉這個窗口.

Response.Write("<script>var o;o=window.showModelessDialog('xxx.aspx');</script>");
\\加入處理數據代碼

Response.Write("<script>o.opener=null;o.close();</script>");

8、怎么让光标总是在一个TextBox。刷新后也要在那个TextBox上面。页面初始化也在我指定的TextBox上。

TextBoxId.Attributes.Add("onblur","this.focus()");

Page.RegisterStartupScript("js","<script>document.all." + TextBoxId.ClientID + ".focus()</script>");

9、打开新ie浏览器窗口。（Window.open()打开一个窗体不被拦截）

<script language="javascript">
function LoadFreight(id)//id为传进的参数
{
 var url='url.aspx?tid='+id+'';
 window.open(url,'','scrollbars=yes,top=0,left=0,resizable=no,status=no,toolbar=no,menubar=no,location=no,width=430,height=600');
}
</script>

10、禁止鼠标右键

<script LANGUAGE="javascript"> 
    function click() 
    {  } 
    document.onmousedown=click;
</script>

还有一种方法：在body标签中加入oncontextmenu="self.event.returnValue=false"

11、日期计算  1        function DayOfYear(today) //返回当天是今年第几天  2        {  3            var year = today.getFullYear();  4            var month = today.getMonth() + 1;  5            var day = today.getDate();  6            var dayOfYear = 0;  7            for(var i = 1 ; i <= month ; i++)  8            {  9                switch(i) 10                { 11                    case 2: 12                    dayOfYear = dayOfYear + 31; 13                    break; 14                    case 3: 15                        if (today.getFullYear() % 4 == 0) 16                            dayOfYear = dayOfYear + 29; 17                        else 18                            dayOfYear = dayOfYear + 28; 19                    break; 20                    case 4: 21                    dayOfYear = dayOfYear + 31; 22                    break; 23                    case 5: 24                    dayOfYear = dayOfYear + 30; 25                    break; 26                    case 6: 27                    dayOfYear = dayOfYear + 31; 28                    break; 29                    case 7: 30                    dayOfYear = dayOfYear + 30; 31                    break; 32                    case 8: 33                    dayOfYear = dayOfYear + 31; 34                    break; 35                    case 9: 36                    dayOfYear = dayOfYear + 31; 37                    break; 38                    case 10: 39                    dayOfYear = dayOfYear + 30; 40                    break; 41                    case 11: 42                    dayOfYear = dayOfYear + 31; 43                    break; 44                    case 12: 45                    dayOfYear = dayOfYear + 30; 46                    break; 47                } 48            } 49            return dayOfYear + day; 50        } 51        function WeekOfYear(today)//返回今天是今年第几周 52        { 53            var dayOfYear = DayOfYear(today); 54            var date = new Date(today.getFullYear(), 0, 1, 0, 0, 0, 0); 55            var firstOfWeek = date.getDay(); 56            return Math.floor((dayOfYear + firstOfWeek + 6) / 7); 57        }

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转载于:https://www.cnblogs.com/pfengk/articles/184370.html