Javascript Backbone.js子视图未被清除
我有以下代码Javascript Backbone.js子视图未被清除,javascript,backbone.js,backbone-views,Javascript,Backbone.js,Backbone Views,我有以下代码 var DummyView = Backbone.View.extend({ subviews: {}, remove: function() { console.log('dummy remove'); _.invoke(this.subviews, 'remove'); this.subviews = {}; Backbone.View.prototype.remove.apply(this, arguments); } });
var DummyView = Backbone.View.extend({
subviews: {},
remove: function() {
console.log('dummy remove');
_.invoke(this.subviews, 'remove');
this.subviews = {};
Backbone.View.prototype.remove.apply(this, arguments);
}
});
var StartView = Backbone.View.extend({
subviews: {},
initialize: function() {
console.log('Start initialize');
seen = [];
console.log(JSON.stringify(this.subviews, function(key, val) {
if (typeof val == "object") {
if (seen.indexOf(val) >= 0) {
return;
}
seen.push(val);
}
return val;
}));
this.subviews['dummy'] = new DummyView();
},
remove: function() {
console.log('start remove');
_.invoke(this.subviews, 'remove');
this.subviews = {};
Backbone.View.prototype.remove.apply(this, arguments);
}
});
var a = new StartView();
a.remove();
delete a;
console.log('creating b and expecting b subviews to be empty');
var b = new StartView();
我已经清楚地删除了“a”及其子视图。现在,当我新建一个“b”StartView时,我希望在initialize console.log中打印的子视图是空的。但它正在打印上一个虚拟子视图。如何解决这个问题
在这里找到JSFIDLE-
子视图
属性的值是一个对象。对象是通过引用复制的,因此它的实例将由所有DummyView实例共享。只需在initialize方法中移动instance,即可为每个DummyView对象创建自己的实例:
var DummyView = Backbone.View.extend({
initialize: function() {
this.subviews = {};
},
...
});
对知道答案了!但仍然感谢您抽出时间回复!:)
var DummyView = Backbone.View.extend({
initialize: function() {
this.subviews = {};
},
...
});