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var obj = new Object();
var objRef = obj; //objÓëobjRefÖ¸Ïòͬһ¸ö¶ÔÏó,objRefÊÇÒ»¸öÒýÓÃ
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var items = new Array("one","two","three");
var itemsRef = items; //´´½¨Ò»¸öÒýÓÃ
items.push("four");
alert(items.length == itemsRef.length); //´ËʱÁ½Õß³¤¶ÈÒ»Ö£¬ÒòΪָÏòͬһ¸ö¶ÔÏó
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var items = new Array("one","two","three");
var itemsRef = items;
items = new Array("new"); //´ËʱitemsÓëitemsRefÖ¸Ïò²»Í¬¶ÔÏó
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var item = "test";
var itemRef = item;
item += "ing";
alert(item != itemRef); //´ËʱitemÓëitemRefÖ¸Ïò²»Í¬¶ÔÏó
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JavaScript
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var reCat = new RegExp("cat");
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var reCat = /cat ......
JavaScript Module Pattern
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1.
http://yuiblog.com/blog/2007/06/12/module-pattern/
2.
http://yuiblog.com/blog/2006/06/01/global-domination/
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var original=28.453
1) //round "original" to two decimals
var result=Math.round(original*100)/100; //returns 28.45
2) // round "original" to 1 dec ......