Develop Reference

Can't work with data obtained with $.Ajax()

I am writing a JS where I want to make some Ajax calls to get a JSON file from my DB in CouchDB. My code is based on examples I found online, but my lack of experience and knowledge is making it difficult to fix it completely.
My code:
function myFunction(){
var request = $.ajax({
url:'http://admin:pass#localhost:5984/db/_design/view/_view/view',
type:'get',
dataType:'json'
});
request.done (function (data)){
var result;
for (var i in data){
if( data[i] == key){
result.push(data[i]);
}
}
console.log(result);
};}
Problem: It seems like it is not even doing the requested call since when I try to print my array it isn`t doing anything.
The way see it, in the first part where I defined request it should get the JSON file from CouchDB. And, if correct, in the second part where the request is done request.done I give the function how I want the JSON file to be taken care of. To make it clear, my idea is to iterate through the data and to save the values of the "key" in every row in my result-array.

Using PARSE REST API

I am currently stuck on a task in which I have to use jQuery ajax to retrieve messages from PARSE HERE API to create something like this:
http://chatbuilder.hackreactor.com/?example=1&username=aa
I was wondering if anyone could explain to me how to use REST api to retrieve messages.
I have looked at other people's coding examples:
https://github.com/stevernator/Chatbuilder/blob/master/draft11
and
https://gist.github.com/guymorita/5726564
They seem to use ajax code like below:
$.ajax({
url: "https://api.parse.com/1/classes/chats",
dataType: "json",
success: function(data) {
var stuff = [];
for(i=0; i < 10; i++) {
stuff[i] = data.results[i].text
}
My question is: from where are the messages being generated from in this app? Do I have to create an account at Parse or would I just use ajax to retrieve this url link:"https://api.parse.com/1/classes/chats"?
Also, where would I find info on this specific class (chats)?
Any input would be greatly appreciated. Thanks!

The parse quick start guide is a very good place to start. The documentation is really good but the tutorials for the JS API are far more complex (backbone) than the documentation. I would download the Todos tutorial as there is some good stuff in it but if you dont know how backbone works its harder to read. I would have made this a comment but I don't have enough rep :(.

How do I assign a JSON response from this API I'm using to elements on my page?

I'm trying to use the API from https://developer.forecast.io and I'm getting a JSON response, this is the first time I'm using an API and all I really need to know is, how do I assign the JSON response I get back from their API to elements on my page. Thanks!
This is done with a script-tag in my header:
script(src='https://api.forecast.io/forecast/APIKEY/LAT,LON')

http://api.jquery.com/jQuery.ajax/ you need to add a success callback, at the bottom of that page are examples you can look at.
EDIT
ok i saw that you are using a script tag with the request, since the api is outside your current domain you need to make a JSONP request
$(document).ready(function(){
$.ajax({
url: 'https://api.forecast.io/forecast/APIKEY/LAT,LON',
dataType: 'jsonp',
success: function(data){
//do whatever you want with the data here
$("body").append(JSON.stringify(data));
}
});
});
off course you need to make some tweaks to that piece of block but you get the idea

What you're looking for is DOM manipulation. DOM is the HTML Document Object Model, an object representation of the HTML comprising a document. There are a lot of ways to go about this, but one of the more popular Javascript libraries for performing this task is jQuery. See their help documentation category on manipulation for more information.
OK, based on your clarification, you're not yet using AJAX. I say "not yet", because you're going to need to. Again, I'll recommend jQuery for that, and their own documentation as the best resource. For a simple "get", your easiest option is the getJSON method.
So, at a very simple level you might do something like:
$(function(){
$.getJSON('url_to_api', function(data) {
$("#SummaryBox").append("<div>" + data.hourly.summary + "</div>");
}
});

IE8 XHTML returned in jQuery ajax call issue

I'm having an issue I cannot resolve through trying lots of different methods!!
Works in Chrome, FF, IE9 but not IE8 or IE7
Overview
I have a page, that Ajax's in the whole HTML from a local .aspx of which reads a photobucket XML feed puts into an HTML list and returns.
http://custommodsuk.com/Gallery.aspx
I've done it this way so the page ranking isn't penilised by Google speed rankings, as the server would be going off and making the call.
The code
$.ajax({
type: "GET",
url: ajaxURL,
dataType:'html',
success: function (feedHTML) {
var galleryList = $(feedHTML).find('#galleryList').find('.listItem');
var noItems = galleryList.length;
console.log(feedHTML.type);
galleryList.each(function (index) {
...
});
}
});
What I've tried
As you can see the console.log(),
the type is undefined, the feedHTML.length shows no. of characters. And from what I gather is generally treated as a string.
It is the JQuery not being able to turn the response into a jQuery object, and I can't traverse it. Therefore the each won't cycle.
I've seen lots of people with the same/similar issue on SO, but no answers, partly due to crap code examples.

Photobuckets RSS feed is malformed.
<p>CustomModsUK posted a photo</a></p>
This tripped up IE8. If you ever have problems like this in the future, check the validity of the HTML!!!

Problems using jQuery AJAX to parse XML

I'm not a very experience programmer and have been learning HTML/CSS/JS on the fly. I've been trying to parse XML using jQuery AJAX methods with absolutely no luck.
Here is my code in use: http://jsfiddle.net/Kb5qj/1/
And here is my code in plain sight:
$(document).ready(function() {
var divid = "#xmlcontent"
function parseXML(xml) {
$(divid).empty();
$(xml).find("CD").each(function() {
var artist = $(this).find("ARTIST").text();
var title = $(this).find("TITLE").text();
$(divid).append("<li>" + artist + " - " + title + "</li>");
});
}
function printError() {
$(divid).html("An error occurred");
}
$.ajax({
type: "GET",
url: "www.w3schools.com/ajax/cd_catalog.xml",
dataType: "xml",
success: parseXML,
error: printError
});
});
I don't know what the problem could be. I have written and re-written and copy/pasted that $.ajax call many many times, but no matter what I do nothing ever happens. Help me please?

like I mentioned it will fail on jsfiddle as they dnt actually send the get request. here is the api on how to achieve the same: http://doc.jsfiddle.net/use/echo.html
If you try the same on your local system it will fail probably cos you are making a cross domain request and your browser natively blocks such requests. That is where jsonp comes it to play its to retrieve json data over cross domains..
You can hack it a little to do the same for js.. here is a SO post about the same: Is there an existing tool for jsonp like fetching of xml in jquery?

With a little bit of fudging, everything in the parsing seems to work fine. Check out this JSFiddle.
You can't use get requests from JSFiddle, but I mocked up the XML into HTML. You may want to try placing your XML document into the DOM to help suss your issue.