我正在尝试调用函数,但是我收到一个错误,声明函数未定义。
window.PackageView = Backbone.View.extend({
tagName: "div",
className: "package-template",
events:{
"click #display-name" : "getNodeId",
},
initialize: function() {
_.bindAll(this,'render', 'getNodeId', 'getAction');
this.template = _.template($('#package-template').html());
$(this.el).html(this.template); //Load the compiled HTML into the Backbone "el"
nodeInstance.bind('reset', this.render, this);
},
render: function() {
//.. no need to worry about this.
},
getNodeId: function(){
objectJSON = jAccess.getJSON(); // I get the JSON successfully
nodeIdArray = []
_.each(objectJSON, function(action){
_.each(action.Nodes, function(action){
nodeIdArray.push(action.Id);
this.getAction(); // Here is the problem. I get an error
});
});
},
getAction: function(){
actionsArray = [];
objectJSON = jAccess.getJSON();
_.each(objectJSON, function(action){
_.each(action.Nodes, function(action){
if(action.Id == 5) {
_.each(action.Actions, function(action){
actionsArray.push(action.Name);
});
}
});
});
console.log(actionsArray);
}
});
我不知道我在哪里错了。帮助我。
我收到错误,说“未定义”不是评估函数('this.getAction()')
答案 0 :(得分:0)
作为一个简单的解决方案,您应该可以:
getNodeId: function(){
var self = this;
objectJSON = jAccess.getJSON();
nodeIdArray = []
_.each(objectJSON, function(action){
_.each(action.Nodes, function(action){
nodeIdArray.push(action.Id);
self.getAction();
});
});
},
我认为使用下划线绑定功能可能会有一个更优雅的解决方案,我会检查一下。
修改强> 更优雅的解决方案仅在从RESTful资源的集合中使用每个方法时才可用,因此在这种情况下不适用。例如,如果您有一组消息,则可以执行以下操作以保留上下文。
addAllMessages: function(messages) {
messages.each(this.addMessage, this);
},