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//»ñÈ¡Ò³ÃæÊý¾Ý
 function getPageSize(){  
   var xScroll, yScroll;  
   if (window.innerHeight && window.scrollMaxY) {  
     xScroll = document.body.scrollWidth;
     yScroll = window.innerHeight + window.scrollMaxY;
   } else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
     xScroll = document.body.scrollWidth;
     yScroll = document.body.scrollHeight;
   } else{ // Explorer Macwould also work in Explorer 6 Strict, Mozilla and Safari
     xScroll = document.body.offsetWidth;
     yScroll = document.body.offsetHeight;
   }
   var windowWidth, windowHeight;
   if (self.innerHeight) {  // all except Explorer
     windowWidth = self.innerWidth;
     windowHeight = self.innerHeight;
   } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
     windowWidth = document.documentElement.clientWidth;
     windowHeight = document.documentElement.clientHeight;
   } else if (document.body) { // other Explorers
     windowWidth = document.body.clientWidth;
     windowHeight = document.body.clientHeight;
   }  
   // for small pages with total height less then height of the viewport
   if(yScroll < windowHeight){
     pageHeight = windowHeight;
   } else { 
     pageHeight = yScroll;
   }
   if(xScroll < windowWidth){  
     pageWidth = windowWidth;
   } else {
    


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event.srcElement.tagName
event.srcElement.type
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event.srcElement.setCapture(); 
event.srcElement.releaseCapture(); 
ʼþ°´¼ü
event.keyCode
event.shiftKey
event.altKey
event.ctrlKey
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event.returnValue
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event.x
event.y
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1 ´´½¨½Å±¾¿é
1: <script language=”JavaScript”>
2: JavaScript code goes here
3: </script>
2 Òþ²Ø½Å±¾´úÂë
1: <script language=”JavaScript”>
2: <!--
3: document.write(“Hello”);
4: // -->
5: </script ......

JavaScript£ºprototypeÊôÐÔʹÓÃ˵Ã÷

prototype ÊÇÔÚ IE 4 ¼°ÆäÒÔºó°æ±¾ÒýÈëµÄÒ»¸öÕë¶ÔÓÚijһÀàµÄ¶ÔÏóµÄ·½·¨£¬¶øÇÒÌØÊâµÄµØ·½±ãÔÚÓÚ£ºËüÊÇÒ»¸ö¸øÀàµÄ¶ÔÏóÌí¼Ó·½·¨µÄ·½·¨£¡ÕâÒ»µã¿ÉÄÜÌýÆðÀ´»áÓеãÂÒ£¬±ð¼±£¬ÏÂÃæÎÒ±ãͨ¹ýʵÀý¶ÔÕâÒ»ÌØÊâµÄ·½·¨×÷ÒÑϽ²½â£º
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String.prototype.Trim=function(){
returnthis.replace(/(^\s*)|(\s*$)/g,"");
}
String.prototype.LTrim=function(){
returnthis.replace(/(^\s*)/g,"");
}
String.prototype.RTrim=function(){
returnthis.replace(/(\s*$)/g,"");
} ......
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