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function classA(sColor) { 
    this.color = sColor; 
    this.sayColor = function () { 
        alert(this.color); 
    }; 

 

function classB(sColor, sName) { 
    this.newMethod = classA; 
    this.newMethod(sColor); 
    delete this.newMethod; //ËùÓеÄÐÂÊôÐÔºÍз½·¨¶¼±ØÐëÔÚɾ³ý¸¸À๹Ô캯ÊýµÄ´úÂëÐкó¶¨Ò壬·ñÔò£¬¿ÉÄܻḲ¸Ç×ÓÀàµÄÏà¹ØÊôÐԺͷ½·¨ 
     
    this.name = sName; 
    this.sayName = function () { 
        alert(this.name); 
    }; 


 
var objB = new classB("blue", "name"); 
objB.sayColor();//blue   
objB.sayName();//name

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BS/MS degree in Computer Science or equivalent

About 3 ~ 4 years front-end development experience

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