<a class="btn">go</a>
<a class="remove">remove</a>

var btn = document.getElementsByClassName('btn')[0],
    remove = document.getElementsByClassName('remove')[0];
var some = function (msg) {
    console.log(msg)
};
// bind 方法pc端有兼容性问题,请注意
var fn = some.bind(null,'哈哈');
btn.addEventListener('click',fn,false);
remove.addEventListener('click',function () {
    btn.removeEventListener('click',fn,false);
},false);

作者：冻豆腐
链接：https://www.zhihu.com/question/50885333/answer/123148092
来源：知乎
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