javascript - 方法调用模式不起作用？

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                7年前关闭。
            
        

我只是在学习JavaScript，它有一个叫做Methods的方法：

这样的示例我希望它能起作用，但是我用FireFox编写了它，但它什么也没做：

var myObject = {
 value: 0,
 increment: function (inc) {
   this.value += inc;
   }
};

console.writeln(myObject.value);
var x = myObject.increment(2);
console.writeln(x);

怎么了？

最佳答案

1）使用console.log代替console.writeln

2）您必须从函数中返回。如果不这样做，获取值的唯一方法是请求值

var myObject = {
    value: 0,
    increment: function (inc) {
        return this.value += inc;
    }
};