Javascript Backbone.js:是否在模型中设置模型属性?
在Backbone.js中,我想在模型的方法中设置一个模型属性。这看起来应该很简单,但我无法让它工作 目前我拥有的是这个。我试图在调用“performSearch”期间设置“results”属性:Javascript Backbone.js:是否在模型中设置模型属性?,javascript,backbone.js,backbone-model,Javascript,Backbone.js,Backbone Model,在Backbone.js中,我想在模型的方法中设置一个模型属性。这看起来应该很简单,但我无法让它工作 目前我拥有的是这个。我试图在调用“performSearch”期间设置“results”属性: var SearchModel = Backbone.Model.extend({ performSearch: function(str) { $.get('/' + str, function(results) { console.log(data);
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
$.get('/' + str, function(results) {
console.log(data);
this.set("results", data);
});
},
});
这给了我以下错误:
Uncaught TypeError: Object #<Object> has no method 'set'
uncaughttypeerror:对象#没有方法“set”
我做错了什么?问题是,
这个
没有绑定到ajax回调中的模型对象
您可以通过执行以下操作来修复它:
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
//assign to local variable, so that it is accesible in callback's closure
var self = this;
$.get('/' + str, function(results) {
// are you sure it should be data?
console.log(data);
self.set("results", data);
});
},
});
另一种方法是显式地将回调函数绑定到模型:
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
//assign to local variable, so that it is accesible in callback's closure
$.get('/' + str, (function(results) {
// are you sure it should be data?
console.log(data);
this.set("results", data);
}).bind(this)); //binding here
},
});
在第二个例子中,如果你要绑定“this”,那么你能不能省略整个“self”部分?