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Angularjs; use $http in service returns reference instead of actual data

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I'm using the services directive in Angularjs not factory and I need to populate a json file to local variable; /* Contains projects on the town */ leMaireServicess.service('cityService', function($http) { // JSON regions and cities loader this.cities = []; // initCities this.initCities = function() { this.cities = $http.get('data/census/cities.js').success(function(data) { return data; }); return this.cities; }; // Get city info this.getCity = function() { return this.cities; }; }); And in my controller I have // Saved game controller leMaireControllers.controller('GameCoreCtrl', function(

Is “this” necessary in javascript apart from variable definition

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问题 My question is dead simple. I just casually discovered that once you have defined a property with this. into an object, you don't need to prepend this. anymore when you want to call them. So this. is really meant to be used ad definition time, like var ? I found it my self shortly after, i was referencing the window object with this. since i called my object without using new, so like it was a function. One extra question, maybe for comments. Inside the main object, if i create a new object,

Difference between context [duplicate]

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This question already has answers here : Closed 7 years ago . Possible Duplicate: Android - what's the difference between the various methods to get a Context? I want to know what's the difference between using this , ClassName.this , getApplicationContext() or myContext ? What are the effects of using each as context in the Toast below? public class ClassName extends Activity { final ClassName myContext = this; ... public void onCreate(Bundle savedInstanceState) { ... button.setOnClickListener(new OnClickListener(){ public void onClick(View v) { Toast.makeText(getApplicationContext(), "This

what is “$this” in php? [duplicate]

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问题 This question already has answers here : Closed 8 years ago . Possible Duplicate: What does the variable $this mean in PHP? I know this is extremely basic. I am watching tutorials on YouTube about CakePHP and PHP and all of them keep using "$this", but none of them actually say what it is or what it is used for. I think it is a variable, but what does it contain, and why do all of the functions have to be run from it? Is it the current class? I read here that "$this" is different from self

Behavior of $this on inherited methods

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问题 I always thought I understood how OOP works (and I have been using it for years), but sometimes I realize some concepts are still not so clear to me. I just came across this question about method visibility in PHP. The accepted answer explains that a private method cannot be overridden by a child class in PHP. Okay, that makes sense. However, the example made me think about the internal inheritance mechanism in PHP, and the way $this behaves on inherited methods. Consider this code (example

accessing global property using “this” keyword inside a function

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问题 I do know that in javascript, when you use "this" keyword inside a function, then "this" would refer to the 'owner' of that function according to Quirksmode website. Therefore when we have a function and we use "this" inside it, then "this" refers to the global (window) object. I am a little confused on how "this" works, for example in the code below, "this" then should be able to resolve x since x is pretty much a property of global object (in this case window). But this.x in this case

How to trigger 'this' within a loop in React

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I am kind-of new to react and having trouble getting value of a radio button generated from a loop. I have a fiddle set-up at: https://jsfiddle.net/rexonms/zrax0zfa/ . The example has two type of radio buttons. One group is generated using loop and the other one without loop. The one without loop works (logs the value of the button) but the ones created with the loop doesn't work when I try to console log the value of the radio button. Thank you in advance. var Inputs = React.createClass({ getInitialState: function(){ return { radios: { a: { radio: 'Radio Loop A' }, b: { radio: 'Radio Loop B'

how to get to the value of manipulated dom element using _this_ Jeditable?

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问题 This is a Continuation of Jeditable: how to set parameters based on dom element attributes Please respond here.. this is my 'real' account.. I'm trying to assign different parameter values to different divs on which I have enabled the jQuery plugin 'Jeditable'. I can't get it to work, I'm sure its something simple.. but I can't figure it out.. How do I acheive it? Given the following DOM element: <div class="editme" id="theone" rel="test"></div> These various snippets produce the following

jQuery $(this).find() and $(selector,this) not working

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I'm having trouble getting jQuery's $(this) function to work as expected... or rather, to work at all. As I understand it, both $('.chamber').each(function(){ $(this).find('.cell').slice(0,19).css('background-color','red'); }); and $('.chamber').each(function(){ $('.cell',this).slice(0,19).css('background-color','red'); }); should do the same thing: select the first 20 (or 19?) .cell s in each .chamber , and make them red. Unfortunately, what actually happens is they both throw the same error: Uncaught exception: ReferenceError: Undefined variable: YName Error thrown at line 19, column 8870 in

Why this is not this?

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问题 I just wrote this piece of code to represent this error that is killing me (Grrr!) I wonder why when I get error: method undefined I have checked in Safari and this variable inside parserDidStart() method is not of type EpisodeController it is of type EpisodeFeedParser why is this? <html> <head> <script type="text/javascript"> var EpisodeFeedParser = function(url){ this.url = url; this.didStartCallback = null; }; EpisodeFeedParser.prototype.parse = function(doc){ this.didStartCallback(this);