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function MyFunc() {}; //¶¨ÒåÒ»¸ö¿Õº¯Êý
var anObj = new MyFunc(); //ʹÓà new ²Ù×÷·û£¬½èÖú MyFun º¯Êý£¬¾Í´´½¨ÁËÒ»¸ö¶ÔÏó
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function MyFunc(){};
var anObj = {}; //´´½¨Ò»¸ö¶ÔÏó
MyFunc.call(anObj); //½« anObj¶ÔÏó×÷Ϊ this Ö¸Õëµ÷ÓÃMyFuncº¯Êý
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<script language="javascript">
function person(name){ //¹¹Ô캯Êýperson
this.name = name;
this.say = function(){alert("hello, i'm " + this.name);}
}
function employee(name, salary){ //¹¹Ô캯Êýemployee
//½«employee¶ÔÏ󴫵ݸøpersonµÄthis²¢µ÷ÓÃpersonº¯Êý£¬ËùÒÔperson¾ÍÏ൱ÓÚemployee¶ÔÏóµÄ¹¹Ô캯ÊýÁË
person.call(this, name);
this.salary = salary;
this.showMoney = function(){alert("my salary is " + this.salary);}
}
var bill = new person("BillGates");
var jek = new employee("jekbaor", 5000);
bill.say();
jek.say();
jek.showMoney();
alert(bill.constructor == person); //true£¬±íÃ÷bill¶ÔÏóʹÓÃpersonº¯Êý¹¹Ôì
alert(jek.constructor == employee); //true£¬±íÃ÷jek¶ÔÏóʹÓÃemployeeº¯Êý¹¹Ôì
alert(bill.say == jek.say); //false
</script>
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}
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