vbscriptʵÏÖjavascript ¡°this¡± µÄ¹¦ÄÜ
Æäʵ¾ÍÊÇÓÃmeÀ´´úÌæthis£¬²»¶à˵£¬¿´´úÂ룺
=============================
´úÂë1£º
<html>
<head>
<title>ÎÞ±êÌâÎĵµ</title>
</head>
<body>
<input id="testit" type=button value="²âÊÔ" onclick="vbscript:me.value='Íê³É'">
<input id="testit" type=button value="²âÊÔ" onclick="javascript:this.value='Íê³É'">
</body>
</html>
=====================
´úÂë2£º
<html>
<head>
<title>ÎÞ±êÌâÎĵµ</title>
<script language=vbscript>
sub change(objid)
objid.value="Íê³É"
end sub
</script>
</head>
<body>
<input id="testit" type=button value="²âÊÔ" onclick="change(me)">
</body>
</html>
=======================
Ïà¹ØÎĵµ£º
eval()º¯Êý
JavaScriptÓÐÐí¶àСÇÏÃÅÀ´Ê¹±à³Ì¸ü¼ÓÈÝÒס£
ÆäÖÐÖ®Ò»¾ÍÊÇeval()º¯Êý£¬Õâ¸öº¯Êý¿ÉÒÔ°ÑÒ»¸ö×Ö·û´®µ±×÷Ò»¸öJavaScript±í´ïʽһÑùÈ¥Ö´ÐÐËü¡£
¾Ù¸öСÀý×Ó£º
var the_unevaled_answer = "2 + 3";
......
<html>
<head>
<title>javascriptʵÏÖÁÄÌì´°¿Ú¹ö¶¯Ìõ×ÜÔÚ×îÏÂÃæµÄ·½·¨</title>
<script language="javascript">
function addMessage(message){
var chatArea=document.getElementById("chatArea");
&n ......
jsÑéÖ¤±íµ¥´óÈ«
1. ³¤¶ÈÏÞÖÆ
<script>
function test()
{
if(document.a.b.value.length>50)
{
alert("²»Äܳ¬¹ý50¸ö×Ö·û£¡");
document.a.b.focus();
return false;
}
}
</script>
<form name=a onsubmit="return test()">
<textarea name="b" cols="40" wrap="VIRTUAL" rows="6"&g ......
»ù±¾ÉÏÿ¸ö¿â¶¼ÓÐÕâ¶«Î÷£¬ÒòΪÈç¹ûÒª¶ÔÒ³ÃæÉϵÄÔªËØ½øÐвÙ×÷£¬ÎÒÃDZØÐëµÈµ½Ò³Ãæ¼ÓÔØÁËÕâ¸öÔªËØ²ÅÐУ¬·ñÔò»á±¨´í£¬µ«ÊÇÎÒÃǺÜÄÜÅж¨Ä³¸öÔªËØÊÇ·ñÒѼÓÔØ£¬µ«ÎÒÃÇ¿ÉÒÔÅж¨Ò³ÃæÊÇ·ñ¼ÓÔØ£¬Õâ¾ÍÊÇÎÒÃǾ³£°Ñ´úÂë·Åµ½window.onload = function(){}Ö®ÖеÄÔµÓÉ¡£µ«window.onloadʼþÊÇ´ýµ½Ò³ÃæÉϵÄËùÓÐ×ÊÔ´±»¼ÓÔØ²Å¼¤»î£¬Èç¹ûÒ³ÃæÉÏÓ ......
ÍøÉÏÃæËµjavascript±Õ°üÓÐÁ½µãÐèҪעÒ⣺
1. ±Õ°üÖеĻ·¾³±äÁ¿Èç¹ûÊÇÔÚÑ»·ÖУ¬ÄÇôʹÓñհü±äÁ¿µÄʱºòÊÇÑ»·½áÊøºóµÄÖµ
2. ±Õ°ü»·¾³±äÁ¿¿ÉÒÔ¶¨ÒåÔÚ·½·¨ºó£¬²»Ó°ÏìʹÓÃ
µÚ1µãÊÇ˵±Õ°üÀï»·¾³±äÁ¿Èç¹ûÊÇÔÚÑ»·ÖУ¬ÄÇÖ»ÄÜȡѻ·½áÊøºóµÄÖµ
Õâ¸öÎÊÌâ¿ÉÒÔÓÃevalº¯Êý¼òµ¥½â¾ö£¬ÔÚÑ»·ÖÐÓÃevalÖ´Ðбհüº¯ÊýÓï¾ä¾ÍûÎÊÌâÀ²£¬Ð§Â ......