js中闭包作用举例
2017-05-09 23:32
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模拟实现类的私有属性
function Boy(name){
this.name = name;
var sex = 'boy';
this.saySex = function(){
console.log("my sex is "+sex)
};
}
var xiaoming = new Boy('xiaoming');
console.log(xiaoming.name);
console.log(xiaoming.sex);
xiaoming.saySex();
VM344:16 xiaoming
VM344:18 undefined
VM344:9 my sex is boy
function Boy(name){
this.name = name;
var sex = 'boy';
this.saySex = function(){
console.log("my sex is "+sex)
};
}
var xiaoming = new Boy('xiaoming');
console.log(xiaoming.name);
console.log(xiaoming.sex);
xiaoming.saySex();
VM344:16 xiaoming
VM344:18 undefined
VM344:9 my sex is boy
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