日期:2014-05-16  浏览次数:20425 次

有个问题请教(LxcJie看到一定要进,因为是看了你的帖子的疑问)
<!DOCTYPE   HTML   PUBLIC   "-//W3C//DTD   HTML   4.0   Transitional//EN ">
<HTML>
<HEAD>
<TITLE>   New   Document   </TITLE>
<META   NAME= "Generator "   CONTENT= "EditPlus ">
<META   NAME= "Author "   CONTENT= " ">
<META   NAME= "Keywords "   CONTENT= " ">
<META   NAME= "Description "   CONTENT= " ">
<meta   http-equiv= "Content-Type "   content= "text/html;   charset=gb2312 ">
</HEAD>
<BODY>
<form   name= "form1 "   method= "post "   action= " ">
日期: <input   type= "text "   id= "a "   onclick= "restrictInputValue(this) "   onkeydown= "ddd(this) "   >
</form>
</BODY>
</HTML>

<script   language= "javascript ">

window.onload=init;
function   init(){
var   oDate   =   new   Date();
var   result=   oDate.getFullYear()+ "- "+(oDate.getMonth() <10?( "0 "   +   (oDate.getMonth()+1)):(oDate.getMonth()+1))+ "- "+(oDate.getDate() <10?( "0 "   +   oDate.getDate())   :   oDate.getDate());
document.getElementById( "a ").value=result;
}


function   restrictInputValue(obj)
{
        var   range   =   obj.createTextRange();
        var   selRange   =   document.selection.createRange();
        range.moveStart( "character ",-obj.value.length)
        selRange.setEndPoint( "StartToStart ",range);
        if(selRange.text.length <5){
        specialText_SelectYear(obj);
        }
        else   if(selRange.text.length> 4&&selRange.text.length <8){
        specialText_SelectMonth(obj)
        }
        else{
        specialText_SelectDate(obj)
        }
}

function   specialText_SelectYear(oInput)
{
                var   oRange   =   oInput.createTextRange();
                oRange.moveStart( "character ",0);
                oRange.moveEnd( "character ",-6);
                //代表选中了年
                oInput.selectIndex   =   1;
                oRange.select();
}
//选中月份
function   specialText_SelectMonth(oInput)
{
                var   oRange   =   oInput.createTextRange();
                oRange.moveStart( "character ",5);
                oRange.moveEnd( "character ",-3);