backbone中动态新增的元素节点触发事件的问题有两种解决方法

ApplicationView = Backbone.View.extend({
template: _.template($("#tpl").html()),
initialize:function(pid){
_.bindAll(this,"addTitle","render","showTitle");
this.i = 0;
this.render();
},
render:function(){
$("#contains").empty();

this.$el.append(this.template());
$("#contains").append(this.$el);

$("#contains").delegate("label","click",this.showTitle);
return this;
},
events:{
"click input:button":"addTitle"/*,
"click label":"showTitle"*/
},
addTitle: function () {
$("#showtext").append("<label>第"+this.i+"次</label>");
this.i++;
},
showTitle:function(e){
var obj =  e.currentTarget;
console.log($(obj).text()+",");
}

"click label":"showTitle"

$("#contains").delegate("label","click",this.showTitle);