javascript Prototype Ó÷¨
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ÎÒÃÇËù³£¼ûµÄÀà°üÀ¨£ºÊý×é±äÁ¿(Array)¡¢Âß¼±äÁ¿(Boolean)¡¢ÈÕÆÚ±äÁ¿(Date)¡¢½á¹¹±äÁ¿(Function)¡¢ÊýÖµ±äÁ¿(Number)¡¢¶ÔÏó±äÁ¿(Object)¡¢×Ö·û´®±äÁ¿(String) µÈ£¬¶øÏà¹ØµÄÀàµÄ·½·¨£¬Ò²ÊdzÌÐòÔ±¾³£Óõ½µÄ£¨ÔÚÕâÀï񻂿·ÖÒ»ÏÂÀàµÄ×¢ÒâºÍÊôÐÔ·¢·½·¨£©£¬ÀýÈçÊý×éµÄpush·½·¨¡¢ÈÕÆÚµÄgetϵÁз½·¨¡¢×Ö·û´®µÄsplit·½·¨µÈµÈ;
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Number.add(num)£º×÷Óã¬Êý×ÖÏà¼Ó
ʵÏÖ·½·¨£ºNumber.prototype.add = function(num){return(this+num);}
ÊÔÑ飺alert((3).add(15)) -> ÏÔʾ 18
À´¿´¿´javascriptÀàµÄʵÏÖ·½·¨
//¶¨ÒåÒ»ÏÂÈË
var people = function(){
this.name = 'yuxing';
};
people.prototype.sex = 'boy';
people.prototype.say = function(){
alert('i am say!');
};
var p = new people();
alert(p.name);
alert(p.sex);
p.say();
Ò²¿ÉÒÔÕâÑùÓÃ
//¶¨ÒåÒ»ÏÂÈË
var people = function(){
this.name = 'yuxing';
};
people.prototype = {
sex : 'boy',
say : function(){
alert('i am say!');
}
};
var p = new people();
alert(p.name);
alert(p.sex);
p.say();
¸ü¶à²Î¿¼ÍøÕ¾
http://bokee.shinylife.net/blog/article.asp?id=455
http://tech.ddvip.com/2009-05/1243588303121461.html
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var a = new Array();
var b = new Array(8);
var c =
new Array("first", "second", "third");
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var d = ["first",
"second", "third"];
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function test(Num1,Num2){
return Num1+Num2;
alert(Num1+Num2); //never outputs
}
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function test(num){
alert(num+10);
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