var a = document.querySelector(".a");
var b = document.querySelector(".b");

function Student() {
    this.bbb();
}

function add(Student) {
    Student.prototype.bbb = function() {
        this.getName();
        this.jiao();
        console.log(this);
    };
    Student.prototype.getName = function() {
        console.log(this);
        hh(a, "click", this, false);
    };
    Student.prototype.jiao = function() {
        alert("汪汪汪");
    };
}


function hh(dom, type, fn, capture) {
    dom.addEventListener(type, fn, capture);
}

add(Student);

var c = new Student();

我點(diǎn)擊dom為什么沒有響應(yīng)