javascript - Backbone View 事件未触发

Question

我有一个正在扩展的模态对话框类，以便显示带有一些按钮的表单。这是 ModalView View :

App.ModalView = Backbone.View.extend({
    events: {
        "click .dismiss": "dismiss"
    },
    element: "<section class='modal'><div class='overlay'></div><div class='content'></div></section>",

    initialize: function () {
        this.el = $(this.element);

        this.setupElement();
        this.bindContext();
        this.extendEvents();
        this.render();
        this.miscellaneous();
    },

    bindContext: function () {
        _.bindAll(this, "dismiss", "render", "setBoxStyle");
    },

    setupElement: function () {
        this.template = $("#modal-template");
    },

    miscellaneous: function () {},
    extendEvents: function () {},

    render: function () {
        $(this.el).find(".content").html(this.template.html());
        $("body").append(this.el);

        this.setBoxStyle();

        if (this.options.content) {
            $(this.el).find(".content").html(this.options.content);
        }
    },

    getMargin: function (width, height) {
        var top, left;

        width = parseFloat(width);
        height = parseFloat(height);

        top = Math.max(0, Math.round((window.innerHeight - height) / 2));
        left = Math.max(0, Math.round((window.innerWidth - width) / 2));

        return top + "px " + left + "px";
    },

    setBoxStyle: function () {
        var css = this.options.css || {};

        var el = $(this.el).find(".content");

        el.css(css);

        var width = el.outerWidth();
        var height = el.outerHeight();
        css.margin = this.getMargin(width, height);

        el.css(css);
    },

    dismiss: function () {
        this.remove();
    }
});

扩展 View :

App.AddRecordView = App.ModalView.extend({
    setupElement: function () {
        this.template = $("#add-record-template");
    }
});

这是模板:

<script type="text/template" id="add-record-template">
    <h1>Add Record</h1>

    <button class="green save">Save Record</button>
    <button class="cancel dismiss">Cancel</button>

</script>

下面是我如何初始化 View :

this.addRecordView = new App.views.addRecord({
    model: this.model,
    css: {
        width: "400px"
    }
});

出于某种原因，当我单击按钮时，关闭事件永远不会触发。这是怎么回事？

Answer 1

您还没有为 View 定义 el 或 tagName。如果以上均未声明，则 Backbone 默认将委托(delegate)事件分配给 div。然后在初始化函数中显式设置 el，用附加的事件处理程序覆盖 el。尝试将您的部分设置为 tagName 并将其从您的元素属性中删除。然后将您的元素附加到 this.el。很抱歉没有提供代码示例，但我是在手机上写的。