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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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      ¿´µ½´Ë´¦ÓÐÈËÒ²Ðí»áÏ룬Ϊʲô²»²»°ÑÉÏÃæµÄMyFuncº¯Êý×÷Ϊanobj¶ÔÏóµÄ¹¹Ô캯Êý£¿ºÇºÇ£¬Èç¹ûÄãÏëµ½Á˾ÍÌ«´ÏÃ÷ÁË£¬ÒòΪJavaScriptÒ²ÊÇÕâôÏëµÄ²¢ÇÒ¾ÍÊÇÕâô×öµÄ£¬¿´ÏÂÃæµÄ´úÂ룺
 
<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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