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var o = new Object;
o.name = "David";
alert(o.name); //Êä³ö "David"
delete o.name;
alert(o.name); //Êä³ö "undefined"
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delete o.toString;
¼´Ê¹ toString ÊÇÓÐЧµÄ·½·¨Ãû£¬ÕâÐдúÂëÒ²»áÒý·¢´íÎó£¬ÒòΪ toString() ·½·¨ÊÇԭʼµÄ ECMAScript ·½·¨£¬²»ÊÇ¿ª·¢Õß¶¨ÒåµÄ¡£
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*/
function isNumberOr_Letter( s ){//ÅжÏÊÇ·ñÊÇÊý×Ö»ò×Öĸ
var regu = "^[0-9a-zA-Z\_]+$";
var re = new RegExp(regu);
if (re.test(s)) {
return true;
}else{
return false;
} ......

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1:js ×Ö·û´®³¤¶ÈÏÞÖÆ¡¢ÅжÏ×Ö·û³¤¶È ¡¢jsÏÞÖÆÊäÈë¡¢ÏÞÖÆ²»ÄÜÊäÈë¡¢textarea ³¤¶ÈÏÞÖÆ
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1. oncontextmenu="window.event.returnValue=false" ½«³¹µ×ÆÁ±ÎÊó±êÓÒ¼ü
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2. <body onselectstart="return false"> È¡Ïûѡȡ¡¢·ÀÖ¹¸´ÖÆ
3. onpaste="return false" ²»×¼Õ ......

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Ö÷Òªº¯Êý CallJScript
BOOL CallJScript(const wchar_t * func, VARIANT * vtParams, int cNumberOfParam, VARIANT * vtResult)
{
if(!func || !func[0])
return FALSE;
CComPtr<IDispatch> spScript;
spScript = GetJScript();
if(!spScript)
return FALSE;
DISPID dispID = NULL;
CC ......
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