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Xaber20110202
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这里不是因为需要绑定this,而是因为在 setInterval 时候,this.tick 被作为了一个单纯的函数。

见:
var a = {
name: 'Xaber',
say() {
alert(this.name)
}
};

setTimeout(a.say, 1000);

这里不是因为需要绑定this,而是因为在 setInterval 时候,this.tick 被作为了一个单纯的函数。

见:
var a = {
    name: 'Xaber', 
    say() {
        alert(this.name)
    }
}; 

setTimeout(a.say, 1000);
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