javascript - 如何将 'this' 范围转发到 javascript 中的函数调用

Question

我如何转发引用调用事件监听器的元素的 this 范围？

例子:

<input type=button value="Foo" id=mybutton>

---

addEvent('mybutton','touchstart', function(){
    if(window['touchmoved']==false)
    hover(); 
});


function hover(){
    this.value //undefined
}

Answer 1

使用 JavaScript Function.call或 Function.apply方法:

addEvent('mybutton','touchstart', function(){
    if(window['touchmoved']==false)
        hover.call(this); // `this` of the called hover points to this `this`
});