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1. BooleanÖµ¡¢Êý×Ö¡¢×Ö·û´®µÄԭʼֵÊÇα¶ÔÏó£¬ÕâÒâζ×ÅËûÃǾßÓÐÊôÐԺͷ½·¨¡£
var test = "hello";
alert(test.length); //outputs "5" 
2. javascript Ëù¶¨ÒåµÄËùÓжÔÏó¶¼ÓÐ toString() ·½·¨£¬²»¹ÜÊÇα¶ÔÏó»¹ÊÇÕæµÄ¶ÔÏó£¬Boolean µÄ toString() ·½·¨Ö»·µ»Ø “true” »òÕß“false”¡£
var test = false;
alert(test.toString()); //outputs "false" 
3. parseInt() ºÍ parseFloat()
alert(parseInt("1234test")); //outputs "1234"
alert(parseInt("0xA")); //outputs "10"
alert(parseInt("22.1")); //outputs "22"
alert(parseInt("test")); //outputs "NaN" 
4. String() ºÍ toString() ΨһµÄÇø±ðÔÚÓÚ¶Ô null »òÕß undefined ÖµµÄÇ¿ÖÆ×ª»»ÉÏ¡£
var test = String(null) //"null"
var test1 = null;
var test2 = test1.toString(); //»á²úÉú´íÎó 
5. Object “Àà”¡£
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HasOwnProperty(property)---Åж϶ÔÏóÊÇ·ñÓÐÌØ¶¨µÄÊôÐÔ¡£
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toString()---·µ»Ø¶ÔÏóµÄԭʼ×Ö·û´®±íʾ¡£
ValueOf()---·µ»Ø×îÊʺϸöÔÏóµÄԭʼֵ¡£


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javascript µÄperlÀàÐ͵ÄÕýÔò±í´ïʽ

£¨1£©var recat = new RegExp("cat");    //¼òµ¥¶¨Òå¡£
        var recat = new RegExp("cat","gi");//g->global,i->case insensitive.
        var recat = /cat/gi;                       ......

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function CheckAll(form) {//ȫѡ
for (var i=0;i    var e = form.elements[i];
    if (e.name != 'chkall')
       e.checked = form.chkall.checked;
   }
}
function checkSelect()//ÅжÏÊÇ·ñÓÐÑ¡ ......

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event.srcElement.tagName
event.srcElement.type ²¶»ñÊÍ·Å
event.srcElement.setCapture(); 

event.srcElement.releaseCapture();  ʼþ°´¼ü
event.keyCode
event.shiftKey

event.altKey
event.ctrlKey ʼþ·µ»ØÖµ
event.returnValue Êó±êλÖÃ
event.x

event.y ´°Ìå»î¶¯ ......

ͼƬÎÞ·ì¹ö¶¯´úÂë(DIV+CSS+JavaScript)

<div id="imgbox" style="height:110px;width:600px;overflow:hidden;">
<div id="imgbox1" style="float:left;width:1000%">
<img src="http://www.google.com.hk/intl/zh-CN/images/logo_cn.gif" mce_src="http://www.google.com.hk/intl/zh-CN/images/logo_cn.gif">
<img src="http://www ......
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