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How to get data with $.ajax() jquery and display to the HTML webpage

I need help in retrieving data from https://jsonplaceholder.typicode.com/. Here is my AJAX call:
$.ajax({
url: root + '/posts/',
data: { userId: 1 },
type: "GET",
dataType: "json",
success: function(data) {
$("#posts").html("<p><h3>" + data[0].title + "</h3></p>");
console.log(data);
$("#posts").append("<p>" + data[0].body + "</p>");
console.log(data);
}
});
How can I set the data: userId to not only 1 but a range of values like 1 to 5 or 1 to 10? And how do I append all of them by displaying in my html file?

Simple click way
HTML:
<div data-action="getUsers" data-users="1,2,3,4,5">Get Users</div>
JS:
$(function(){
$("[data-action=getUsers]").on("click", function(){
// get userId someway
var $this = $(this);
var data = $this.data();
var users_string = data.users;
var userIds_str_array = users_string.spilt(","); // this will turn a string into an array of strings split by given char
var userIds_int_array = [];
var length = (userIds_str_array.length - 1);
// convert to ints, might be overkill, strings might be fine, this is your call
for(let i = length; i--;){ // short hand for-loop, use if order doesnt matter
let value = userIds_str_array[i];
let test_val = parseInt(value);
// short hand if
// return true to skip iteration
isNaN(test_val) === false ? userIds_int_array.push(value) : return true;
}
// make sure you are not wasting your time.
if(userIds_int_array.length > 1){
return GetUserFromPosts(user, function(responce){
if(responce.users){
if(responce.users.length > 0){
// func call
return doSomethingWithUsers(responce.users);
}else{
return false; // no users in array
}
}else{
return false; // there was probably a 500 error
}
});
}
else
{
return false // no users in array
}
})
})
function GetUserFromPosts(userId_arr, callback){
var data = {userId: userId_arr}; // I assume your api can accept an array, if not, you have to do seperate calls for each one.
$.ajax({
url: root + '/posts/',
data: data,
success: function(data) {
console.log(data);
return callback(data);
}
});
}

Ajax calls inside loop need sequential responses

I need to make 3 or less ajax calls, and the responses need to be appended to the dom in the same order they were requested.
I have the following function, but the problem is that the responses that I get are not necessarily in the correct order when they get appended to the dom.
I wouldn't want to use the async: false property because it blocks the UI and it's a performance hit of course.
mod.getArticles = function( ){
//mod.vars.ajaxCount could start at 0-2
for( var i = mod.vars.ajaxCount; i < 3; i++ ){
//mod.vars.pushIds is an array with the ids to be ajaxed in
var id = mod.vars.pushIds[i];
$.ajax({
url: '/ajax/article/' + id + '/',
type: "GET",
dataType: 'HTML',
error: function() {
console.error('get article ajax error');
}
}).done( function( data ) {
if (data.length) {
mod.appendArticle( data );
} else {
console.error('get article ajax output error');
}
});
}
};

You need to append the article to a certain position, based on for example the i variable you have. Or you could wait for all of the requests and then append them in order. Something like this:
mod.getArticles = function( ){
var load = function( id ) {
return $.ajax({
url: '/ajax/article/' + id + '/',
type: "GET",
dataType: 'HTML',
error: function() {
console.error('get article ajax error');
});
};
var onDone = function( data ) {
if (data.length) {
mod.appendArticle( data );
} else {
console.error('get article ajax output error');
}
};
var requests = [];
for( var i = mod.vars.ajaxCount; i < 3; i++ ){
requests.push(load(mod.vars.pushIds[i]));
}
$.when.apply(this, requests).done(function() {
var results = requests.length > 1 ? arguments : [arguments];
for( var i = 0; i < results.length; i++ ){
onDone(results[i][0]);
}
});
};

Here is an example using i to append them in the proper order when they all finish loading:
mod.getArticles = function( ){
// initialize an empty array of proper size
var articles = Array(3 - mod.vars.ajaxCount);
var completed = 0;
//mod.vars.ajaxCount could start at 0-2
for( var i = mod.vars.ajaxCount; i < 3; i++ ){
// prevent i from being 3 inside of done callback
(function (i){
//mod.vars.pushIds is an array with the ids to be ajaxed in
var id = mod.vars.pushIds[i];
$.ajax({
url: '/ajax/article/' + id + '/',
type: "GET",
dataType: 'HTML',
error: function() {
console.error('get article ajax error');
}
}).done( function( data ) {
completed++;
if (data.length) {
// store to array in proper index
articles[i - mod.vars.ajaxCount] = data;
} else {
console.error('get article ajax output error');
}
// if all are completed, push in proper order
if (completed == 3 - mod.vars.ajaxCount) {
// iterate through articles
for (var j = mod.vars.ajaxCount; j < 3; j++) {
// check if article loaded properly
if (articles[j - mod.vars.ajaxCount]) {
mod.appendArticle(articles[j - mod.vars.ajaxCount]);
}
}
}
});
}(i));
}
};

var success1 = $.ajax...
var success2 = $.ajax...
var success3 = $.ajax...
$.when(success1, success2, success3).apply(ans1, ans2, ans3) {
finalDOM = ans1[0]+ans2[0]+ans3[0];
}
Check this for more reference. This is still async, but it waits for all of them to complete. You know the order of invocation already, as its done through your code, so add the dom elements accordingly.

Solutions that rely solely on closures will work up to a point. They will consistently append the articles of a single mod.getArticles() call in the correct order. But consider a second call before the first is fully satisfied. Due to asynchronism of the process, the second call's set of articles could conceivably be appended before the first.
A better solution would guarantee that even a rapid fire sequence of mod.getArticles() calls would :
append each call's articles in the right order
append all sets of articles in the right order
One approach to this is, for each article :
synchronously append a container (a div) to the DOM and keep a reference to it
asynchronously populate the container with content when it arrives.
To achieve this, you will need to modify mod.appendArticle() to accept a second parameter - a reference to a container element.
mod.appendArticle = function(data, $container) {
...
};
For convenience, you may also choose to create a new method, mod.appendArticleContainer(), which creates a div, appends it to the DOM and returns a reference to it.
mod.appendArticleContainer = function() {
//put a container somewhere in the DOM, and return a reference to it.
return $("<div/>").appendTo("wherever");
};
Now, mod.getArticles() is still very simple :
mod.getArticles = function() {
//Here, .slice() returns a new array containing the required portion of `mod.vars.pushIds`.
//This allows `$.map()` to be used instead of a more cumbersome `for` loop.
var promises = $.map(mod.vars.pushIds.slice(mod.vars.ajaxCount, 3), function(id) {
var $container = mod.appendArticleContainer();//<<< synchronous creation of a container
return $.ajax({
url: '/ajax/article/' + id + '/',
type: "GET",
dataType: 'HTML'
}).then(function(data) {
if (data.length) {
mod.appendArticle(data, $container);//<<< asynchronous insertion of content
} else {
return $.Deferred().reject(new Error("get article ajax output error"));
}
}).then(null, function(e) {
$container.remove();//container will never be filled, so can be removed.
console.error(e);
return $.when(); // mark promise as "handled"
});
});
return $.when.apply(null, promises);
};
mod.getArticles() now returns a promise of completion to its caller, allowing further chaining if necessary.

Try utilizing items within mod.vars array as indexes; to set as id property of $.ajaxSettings , set returned data at this.id index within an array of responses. results array should be in same order as mod.vars values when all requests completed.
var mod = {
"vars": [0, 1, 2]
};
mod.getArticles = function () {
var results = [];
var ids = this.vars;
var request = function request(id) {
return $.ajax({
type: "GET",
url: "/ajax/article/" + id + "/",
// set `id` at `$.ajaxSettings` ,
// available at returned `jqxhr` object
id: id
})
.then(function (data, textStatus, jqxhr) {
// insert response `data` at `id` index within `results` array
console.log(data); // `data` returned unordered
// set `data` at `id` index within `results
results[this.id] = data;
return results[this.id]
}, function (jqxhr, textStatus, errorThrown) {
console.log("get article ajax error", errorThrown);
return jqxhr
});
};
return $.when.apply(this, $.map(ids, function (id) {
return request(id)
}))
.then(function () {
$.map(arguments, function (value, key) {
if (value.length) {
// append `value`:`data` returned by `$.ajax()`,
// in order set by `mod.vars` items:`id` item at `request`
mod.appendArticle(value);
} else {
console.error("get article ajax output error");
};
})
});
};
mod.getArticles();
jsfiddle http://jsfiddle.net/6j7vempp/2/

Instead of using a for loop. Call your function in response part of previous function.
//create a global variable
var counter = 0;
function yourFunc(){
mod.getArticles = function( ){
//mod.vars.ajaxCount could start at 0-2
//mod.vars.pushIds is an array with the ids to be ajaxed in
var id = mod.vars.pushIds[counter ];
$.ajax({
url: '/ajax/article/' + id + '/',
type: "GET",
dataType: 'HTML',
error: function() {
console.error('get article ajax error');
}
}).done( function( data ) {
if (data.length) {
mod.appendArticle( data );
} else {
console.error('get article ajax output error');
}
//increment & check your loop condition here, so that your responses will be appended in same order
counter++;
if (counter < 3)
{ yourFunc(); }
});
};
}

I'm faced same problem i'm solve this problem using following way.
just use async for get sequence wise response
<script type="text/javascript">
var ajax1 = $.ajax({
async: false,
url: 'url',
type: 'POST',
data: {'Data'},
})
.done(function(response) {
console.log(response);
});

How to grab JSON values with Ajax JQuery.each()?

this is my first question here! New to using Ajax, and have hit an issue that maybe someone could catch what I am doing wrong.
var featuredList;
$.ajax({
url: "myurl",
type: 'GET',
success: function(result){
featuredList = JSON.stringify(result);
alert(result);
$.each( result, function( key, value ) {
alert('not working');
});
},
error: function(){alert('error');}
});
I have gone this path before with no issues, this time around I cannot get inside the loop. The alert(result) is returning my data just fine.
Thanks!

Hi,
Hope this might help you to process JSON data received from AJAX request, try below code:
jQuery.ajax({
url:'myurl',
dataType: "json",
data:{
classId:'C001'
},
type: "GET",
success: function(data) {
for (var j=0; j < data.length; j++) {
//syntax to get value for given key
//data[j].yourKey
var userId = data[j].userId;
var name = data[j].name;
var address = data[j].address;
}
}
});
Thanks,
~Chandan

As per your code try doing this:it should work
var data = JSON.parse(result);//here result should be json encoded data
$.each( data, function( key, value ) {
alert(value);
});

Use jQuery promises, gives you more semantic and readable code
var featuredList;
$.getJSON("myurl", {"optional": "data"})
.done(function(data){
// successful ajax query
$.each( data, function( key, value ) {
// do whatever you want with your iterated data.
});
});
.fail(function(){
// catch errors on ajax query
});

I do it this way
$.getJSON('url',
function(dataList) { // on server side I do the json_encode of the response data
if(dataList !== null) {
$.each(dataList, function(index, objList ) {
// rest of code here
});
}
});
Hope this works for you as well.

function getArray(){
return $.getJSON('url');
}
var gdata = [];
getArray().then(function(json) {
$.each(json, function(key, val) {
gdata[key] = val ;
});
console.log(gdata);
I had the Same Problem It took 2 days to got the solution.
You have to resolve the promise and return the json object to access the value.

You could easily do this using the open source project http://www.jinqJs.com
/* For Async Call */
var result = null;
jinqJs().from('http://.....', function(self){
result = self.select();
});
/* For Sync Call */
var result = jinqJs().from('http://....').select();

You can also use $.Json to get your solution , here is an example
$.getJSON('questions.json', function (data) {
$.each(data,function(index,item){
console.log(item.yourItem); // here you can get your data
}
}
You can use or print Index if you want it. Its show the data index.
Hope it may help you, I am exactly not sure its your requirement or not, But i have tried my best to solve it.

This will work as the result from ajax call is a string.
$.each($.parseJSON(result), function( key, value ) {
alert('This will work');
});

Clean way to make Subsequent AJAX Calls to API based on Data

So I have a conceptual question regarding the cleanest way to make subsequent AJAX calls to an API based on the returned data.
A quick example:
A function, which encompasses the call would look like this:
function makeCall(headers, min, max) {
$.ajax({
headers: headers,
url: "https://coolapi.com/data?begIndex" + min + "&endIndex=" + max + "&begTimestamp=1404198000000&endTimestamp=1409554800000",
type: "GET",
dataType: 'JSON'
});
}
makeCall(headers, 0, 20);
The beg / end index (min/max), determine the amount of data I'll get back in the array. The API will only return a maximum of 20 items in the array, but it will also return me a COUNT of how many items total exist in that array. An example of the data returned is below:
{
count = 133;
result = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19];
}
So my next call would be:
makeCall(headers, 20, 40);
and so on so forth, until I got all 133 items from the array.
The question is...what is the cleanest way to continue to make subsequent calls until I've gotten and stored all 133 items from the array? Given that the count could be any number, it's hard to imagine how I can do this. I was thinking of nesting more ajax calls in a "success" function, but it's not scalable if I get back a number like 300.
Does anyone have any advice on how to proceed?
Thanks in advance!
EDIT:
So based on the advice in the comment, I've attemped to make the call recursive--but it doesn't seem to function as intended:
var theData = [];
var minCounter=0;
var maxCounter= minCounter + 20;
function makeCall(headers, min, max) {
$.ajax({
headers: headers,
url: "https://coolapi.com/data?begIndex" + min + "&endIndex=" + max + "&begTimestamp=1404198000000&endTimestamp=1409554800000",
type: "GET",
dataType: 'JSON',
success: function (data) {
theData.push(data.result);
newMin = minCounter + 20;
if (data.count >= theData.length ) {
makeCall(headers, newMin, maxCounter);
}
}
});
}
makeCall(headers, minCounter, maxCounter);
How do properly increment the variable as well as set the flag?
SECOND EDIT:
The method below works using the second comment's suggestion, but there are some issues here as well...
function doAjax(headers, min, dObject) {
var max = min + 20;
$.ajax({
headers: headers,
url: "https://coolapi.com/data?begIndex" + min + "&endIndex=" + max + "&begTimestamp=1404198000000&endTimestamp=1409554800000",
type: "GET",
dataType: 'JSON',
success: function (data) {
results.push(data);
window.count = data.count;
dObject.resolve();
}
});
}
// array that will contain all deferred objects
var deferreds = [];
// array that will contain all results
var results = [];
// make the ajax calls
for (var i = 20; i < 133 ; i+= 20) {
var dObject = new $.Deferred();
deferreds.push(dObject);
doAjax(headers, i, dObject);
}
// check if all ajax calls have finished
$.when.apply($, deferreds).done(function() {
console.log(results);
});
var dObject = new $.Deferred();
doAjax(headers,0, dObject);
First, the data doesn't push to the array in order. There doesn't seem anyway to fix this. Also strangely enough, in the for loop--I have to set the number for it to actually work. Trying to store it in a variable doesn't seem to work as well...Suggestions here?

Here's a working implementation based around the code you started with. Code is commented to help you understand what is happening:
// Change these constants to suit your purposes.
var API_URL = 'https://coolapi.com/data';
var HEADERS = {};
var API_RESULTS_PER_REQUEST = 20;
var MAX_API_CALLS = 20;
// Count API calls to trigger MAX_API_CALLS safety lock.
var apiCalls = 0;
// Function we'll call to get all our data (see bottom).
function collectApiData(begTimestamp, endTimestamp) {
var dataReady = jQuery.Deferred();
var params = {
'begTimestamp': begTimestamp,
'endTimestamp': endTimestamp
};
var datasetsCollected = requestDatasets(params);
jQuery.when(datasetsCollected).then(function(data) {
dataReady.resolve(data);
});
return dataReady;
}
// Makes individual AJAX call to API
function callApi(params, headers) {
var $request = jQuery.ajax({
url: API_URL,
headers: headers,
data: params,
type: 'GET',
dataType: 'JSON'
});
return $request;
}
// Recursive function that makes API calls until data is collected, there is an
// error, or MAX_API_CALLS limit is hit.
function requestDatasets(params, resultsReady, resultsFetched) {
resultsReady = ( resultsReady !== undefined ) ? resultsReady : jQuery.Deferred();
resultsFetched = ( resultsFetched !== undefined ) ? resultsFetched : [];
// Trigger safety to avoid API abuse
if ( apiCalls >= MAX_API_CALLS ) {
console.error('Exceeded max API calls:', MAX_API_CALLS);
resultsReady.resolve(resultsFetched);
}
// Set index data
params.begIndex = resultsFetched.length;
params.endIndex = resultsFetched.length + API_RESULTS_PER_REQUEST;
// Request dataset from API
var apiRequest = callApi(params, HEADERS);
apiCalls += 1;
// Callback once API request has completed and data is ready
jQuery.when(apiRequest).done(function(data) {
var apiResultCount = data.count;
resultsFetched = resultsFetched.concat(data.result);
console.debug('Fetched', resultsFetched.length, 'of', apiResultCount, 'API results');
if ( apiResultCount > resultsFetched.length ) {
console.debug('Making another API call');
requestDatasets(params, resultsReady, resultsFetched);
}
else {
console.debug('Results all fetched!');
resultsReady.resolve(resultsFetched);
}
});
jQuery.when(apiRequest).fail(function(data) {
console.error('API error: returning current results.');
resultsReady.resolve(resultsFetched);
});
return resultsReady;
}
// Run script
var dataReady = collectApiData('1404198000000', '1409554800000');
jQuery.when(dataReady).then(function(data) {
console.log(data);
});
Here's a working fiddle that mocks the API using httpbin.org:
http://jsfiddle.net/klenwell/mfhLxun2/

Json stringify double quotes

I can't seem to get around this issue... Json I'm trying to pass to an MVC Controller keeps coming out like this
"\"{MaterialQuantity: { MaterialID :18, Quantity:1}}\""
This is the code that generates it:
function CreateJsonForQuantities() {
var inputs = $('input[name=MaterialQuantity]');
var total = inputs.length;
var data = "";
inputs.each(function (index) {
data = data + $(this).val();
if (index != total -1)
data = data + ',';
});
return data;
}
And this is the hidden which it reads data from (of course this is auto-generated as well)
<input name="MaterialQuantity" type="hidden" value="{MaterialQuantity: { MaterialID :12, Quantity:5}}" />
What am I doing wrong?
UPDATE
Ok so now I'm properly getting json object and my ajax requests looks like this. Problem now is that it does pass proper objects but all values are null in the controller action :(
var form_data = CreateJsonForNorm();
var quantity_data = CreateJsonForQuantities();
var data = { norm: form_data, mqvm: quantity_data };
$.ajax({
type: "POST",
url: form.attr("action"),
data: data,
success: function () {
location.href = "#Url.Action("Index")";
('#addDialog').dialog("close");
},
error: function () {
alert("Error");
}
});

Try using JSON.stringify(data) in your request