我想捕获按钮的（addnewItem）click事件，但无法实现。下面的代码有什么问题？

MyView = Backbone.View.extend({
    tagName: "table",
    render: function () {
        var rows = [];
        this.collection.each(function (row) {
            var rowView = new RowView({ model: row});
            rows.push(rowView.render().el);
        });
        this.$el.html(rows);
        $("#app-view").html("<h3>Items</h3><br/>").append(this.el).append("<br /><input type='button' class='btn btn-primary' value='Add new item' id='addNewItem' />");
        return this;
    },
    initialize: function () {
        this.listenTo(this.collection, "add", this.render);
    },
    events: {
        "click #addNewItem": "addNewItem"
    },
    addNewItem: function () {
        alert('Item added');
    }
});