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function displayScreenSize()
{
var bodyWidth =document.body.clientWidth; //ÍøÒ³¿É¼ûÇøÓò¿í
var bodyHeight =document.body.clientHeight; //ÍøÒ³¿É¼ûÇøÓò¸ß
var bodyWidthWithBorder =document.body.offsetWidth; //ÍøÒ³¿É¼ûÇøÓò¿í(°üÀ¨±ßÏߵĿí)
var bodyHeightWithBorder=document.body.offsetHeight; //ÍøÒ³¿É¼ûÇøÓò¸ß(°üÀ¨±ßÏߵĿí)
var bodyWidthWithScroll =document.body.scrollWidth; //ÍøÒ³ÕýÎÄÈ«ÎÄ¿í
var bodyHeightWithScroll=document.body.scrollHeight; //ÍøÒ³ÕýÎÄÈ«Îĸß
var bodyTopHeight =document.body.scrollTop; //ÍøÒ³±»¾íÈ¥µÄÉϱ߾à
var bodyLeftWidth =document.body.scrollLeft; //ÍøÒ³±»¾íÈ¥µÄ×ó±ß¾à
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<script language="javascript">
function isChinese1(str){
var badChar ="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
badChar += "abcdefghijklmnopqrstuvwxyz";
badChar += "0123456789";
badChar += " "+"¡¡";//°ë½ÇÓëÈ«½Ç¿Õ¸ñ
badChar ......
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var a = [1,2,3,4,5];
var b = a.shift(); //a£º[2,3,4,5] b£º1
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var a = [1,2,3,4,5];
var b = a.unshift(-2,-1); //a£º[-2,-1,1,2,3,4,5] b£º7
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<script language="javascript">
var strM = "javascript is a good script language";
//ÔÚ´ËÎÒÏ뽫×ÖĸaÌæ»»³É×ÖĸA
alert(strM.replace("a","A"));
</script>
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