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我在看MSDN網絡,任何人都可以解釋我的source-code
?Object.create源碼解釋?
Object.create = (function() {
var Temp = function() {};
return function (prototype) {
if (arguments.length > 1) {
throw Error('Second argument not supported');
}
if (typeof prototype != 'object') {
throw TypeError('Argument must be an object');
}
Temp.prototype = prototype;
var result = new Temp();
Temp.prototype = null;
return result;
};
})();
function Guru(name){
this.name = name;
}
function Shankar(name){
this.name = name;
}
Guru.prototype = Object.create(Shankar.prototype);
這到底是怎麼困惑我是Temp.prototype = null;
,爲什麼我們把它設置爲null
和returning a instance of Temp
時,我們可以只返回new Temp
Temp.prototype = prototype;
return new Temp;