``` click
var list = {
init : function () {
this.ms = "LST";
this.dom = document.getElementById('btn');
this.bindEvent();
console.log(this);
},
bindEvent : function () {
this.dom.onclick = this.showMessage; // 为啥这里onclick是null?
},
showMessage : function () {
// alert(this.ms);
console.log(this)
}
}
list.init();