我有一个带有 Backbone.js 视图的基本表单，当我在顶部输入上按Enter时，open事件被触发。我如何确保open事件只在我按浏览按钮时触发？

<form method="post">
    <div>
        <input type="text" />
    </div>
    <div id="myId">
        <input type="text" />
        <button class="browse">Browse...</button>
    </div>
    <input type="submit" value="Save" />
</form>

var MyView = Backbone.View.extend({

    events: {
        'click button.browse': 'open'
    },

    open: function(e) {
        alert('Open dialog');
    },

    initialize: function() {},

    render: function() {}
});

$(function() {
    var myView= new MyView({ el: $('#myId') });
});​

​

jsFiddle here