Develop Reference

JSON values are showing NaN

While retrieving JSON array data using $.each method, I am able to get the array values, but apart from that it's showing 'NaN' values and showing the below error.
"Uncaught TypeError: Cannot use 'in' operator to search for '5' in Hello!"
Seems it's looping through all the objects not only array, if this is the case how can I get only array values and how can I get all the values(including and excluding array values).
one more query does this rawgit works for only method 'GET', because while using method 'POST' throwing error(403 (Forbidden)).
$.ajax({
method: 'GET',
url: 'https://rawgit.com/rajeshdesigner/testgit/master/colorsdata.json',
dataType: 'json',
success: function (data) {
$.each(data, function(index, obj){
$.each(obj, function(index, element) {
$('#show-data').append(element.key + element.value + '<br/>');
});
});
}
});
JSON:
{
"items": [
{
"key": "First",
"value": 100
},{
"key": "Second",
"value": 200
},{
"key": "Last",
"value": "Mixed"
}
],
"obj": {
"number": 1.2345e-6,
"enabled": true
},
"message": "Hello!"
}

It sounds like you only want to iterate data.items but you're iterating over everything. Try this:
$.each(data.items, function(index, obj) {
$('#show-data').append(obj.key + obj.value + '<br/>');
});
https://jsfiddle.net/rrsku4Lq/

The problem is when the second loop reaches "message": "Hello!", that is not a object to be looped again, so for that element only the first loop is needed.
To correct, just make an if statement to enter the second loop only in case obj is an Object.
I also changed the nested loop index name to index2.
$.each(data, function(index, obj){
// Only do nested loop if obj is Object
if (obj instanceof Object) {
$.each(obj, function(index2, element) {
$('#show-data').append(element.key + element.value + '<br/>');
});
}
});
If you're only interested in data.items, than you can use
$.each(data.items, function(index2, element) {
$('#show-data').append(element.key + element.value + '<br/>');
});

You have an unnecessary for loop. The response is one JSON object in your case. You simply need to iterate the data items. UPDATE: How you handle a response depends on what you want to accomplish. In practice, you'll generally know how to access the data you need from the response, but as others have suggested, you can iterate through the keys in the response object and check for types
var object = {
arr : [1,2,3],
nestedObject : { }
};
for (var key in object) {
console.log(key);
console.log('Is array? ' + Array.isArray(object[key]));
// Now you can handle the data based on it's type...
}
In this case, you could choose to expect the response to include a items key and iterate over that. (It's also good practice to validate that you can process the response)
$.ajax({
method: 'GET',
url: 'https://rawgit.com/rajeshdesigner/testgit/master/colorsdata.json',
dataType: 'json',
success: function(data) {
// data is your JSON object.
data.items.forEach(function(item) {
$('#show-data').append(item.key + item.value + '<br/>');
});
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="show-data"></div>
Also, 403 indicates that the resource is blocked for the current user. Verify that your POST method is publicly accessible and that you are authorized to make the request.

You should parse the json first. And as #Jason P said, iterate data.items
$.ajax({
method: 'GET',
url: 'https://rawgit.com/rajeshdesigner/testgit/master/colorsdata.json',
dataType: 'json',
success: function (data) {
var parsedData = $.parseJSON(data);
$.each(parsedData.items, function(index, obj){
$.each(obj, function(index, element) {
$('#show-data').append(element.key + element.value + '<br/>');
});
});
}
});

You are looping through all the elements in the array. I think you need to loop through only 'items' element as only that element contains the 'key' and 'value' elements.
Even though you are doing that, you can check if the key and value element exists, and if it does, do whatever your code wants.
$.ajax({
method: 'GET',
url: 'https://rawgit.com/rajeshdesigner/testgit/master/colorsdata.json',
dataType: 'json',
success: function (data)
{
$.each(data, function(index, obj)
{
$.each(obj, function(index, element)
{
if(element.hasProperty('key') && element.hasProperty('value'))
$('#show-data').append(element.key + element.value + '<br/>');
});
});
}
});

$.ajax({
method: 'GET',
url: 'https://rawgit.com/rajeshdesigner/testgit/master/colorsdata.json',
dataType: 'json',
success: function (data) {
console.log(data.items);
$.each(data.items, function(index, element) {
$('#show-data').append(element.key + element.value + '<br/>');
});
}
});

pull json data with ajax requests

I'm trying to pull in some json data using ajax. I am able to successfully pull data from the first 2 items but its the data under "placemark" that I really need. I need to be able to display this in a list much like an rssfeed. I'm not sure how to drill down deeper into the json to pull the data I need. any help greatly appreciated.
$.ajax({
type: 'GET',
url: rssAPI,
success: function(data){
console.log(data);
$.each(data, function(index, item) {
$.each(item, function(key, value) {
$('.listing').append(key + ': ' + value + '</br>');
});
});
}
});
here's what my json looks like
and this is my output

You need to either output, if the property value is a string, or iterate further (i.e. another loop) if it's an array, as is the case with the Placemark properties.
So:
$.each(data, function(index, item) {
$.each(item, function(key, value) {
if (typeof value != 'object')
$('.listing').append(key + ': ' + value + '</br>');
else
$.each(value, function(key, value) {
//these are your items under Placemark
});
});
});

Here placemark contains array of json objects. So you need to access it as below :
for(i=0; i<Document.Placemark; i++){
console.log(Document.Placemark[i].name);
console.log(Document.Placemark[i].description);
}

loop for fetching json data in html [duplicate]

On the jQuery AJAX success callback I want to loop over the results of the object. This is an example of how the response looks in Firebug.
[
{"TEST1":45,"TEST2":23,"TEST3":"DATA1"},
{"TEST1":46,"TEST2":24,"TEST3":"DATA2"},
{"TEST1":47,"TEST2":25,"TEST3":"DATA3"}
]
How can I loop over the results so that I would have access to each of the elements?
I have tried something like below but this does not seem to be working.
jQuery.each(data, function(index, itemData) {
// itemData.TEST1
// itemData.TEST2
// itemData.TEST3
});

you can remove the outer loop and replace this with data.data:
$.each(data.data, function(k, v) {
/// do stuff
});
You were close:
$.each(data, function() {
$.each(this, function(k, v) {
/// do stuff
});
});
You have an array of objects/maps so the outer loop iterates over those. The inner loop iterates over the properties on each object element.

You can also use the getJSON function:
$.getJSON('/your/script.php', function(data) {
$.each(data, function(index) {
alert(data[index].TEST1);
alert(data[index].TEST2);
});
});
This is really just a rewording of ifesdjeen's answer, but I thought it might be helpful to people.

If you use Fire Fox, just open up a console (use F12 key) and try out this:
var a = [
{"TEST1":45,"TEST2":23,"TEST3":"DATA1"},
{"TEST1":46,"TEST2":24,"TEST3":"DATA2"},
{"TEST1":47,"TEST2":25,"TEST3":"DATA3"}
];
$.each (a, function (bb) {
console.log (bb);
console.log (a[bb]);
console.log (a[bb].TEST1);
});
hope it helps

For anyone else stuck with this, it's probably not working because the ajax call is interpreting your returned data as text - i.e. it's not yet a JSON object.
You can convert it to a JSON object by manually using the parseJSON command or simply adding the dataType: 'json' property to your ajax call. e.g.
jQuery.ajax({
type: 'POST',
url: '<?php echo admin_url('admin-ajax.php'); ?>',
data: data,
dataType: 'json', // ** ensure you add this line **
success: function(data) {
jQuery.each(data, function(index, item) {
//now you can access properties using dot notation
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("some error");
}
});

Access the json array like you would any other array.
for(var i =0;i < itemData.length-1;i++)
{
var item = itemData[i];
alert(item.Test1 + item.Test2 + item.Test3);
}

This is what I came up with to easily view all data values:
var dataItems = "";
$.each(data, function (index, itemData) {
dataItems += index + ": " + itemData + "\n";
});
console.log(dataItems);

Try jQuery.map function, works pretty well with maps.
var mapArray = {
"lastName": "Last Name cannot be null!",
"email": "Email cannot be null!",
"firstName": "First Name cannot be null!"
};
$.map(mapArray, function(val, key) {
alert("Value is :" + val);
alert("key is :" + key);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

if you don't want alert, that is u want html, then do this
...
$.each(data, function(index) {
$("#pr_result").append(data[index].dbcolumn);
});
...
NOTE: use "append" not "html" else the last result is what you will be seeing on your html view
then your html code should look like this
...
<div id="pr_result"></div>
...
You can also style (add class) the div in the jquery before it renders as html

I use .map for foreach. For example
success: function(data) {
let dataItems = JSON.parse(data)
dataItems = dataItems.map((item) => {
return $(`<article>
<h2>${item.post_title}</h2>
<p>${item.post_excerpt}</p>
</article>`)
})
},

If you are using the short method of JQuery ajax call function as shown below, the returned data needs to be interpreted as a json object for you to be able to loop through.
$.get('url', function(data, statusText, xheader){
// your code within the success callback
var data = $.parseJSON(data);
$.each(data, function(i){
console.log(data[i]);
})
})

I am partial to ES2015 arrow function for finding values in an array
const result = data.find(x=> x.TEST1 === '46');
Checkout Array.prototype.find() HERE

$each will work.. Another option is jQuery Ajax Callback for array result
function displayResultForLog(result) {
if (result.hasOwnProperty("d")) {
result = result.d
}
if (result !== undefined && result != null) {
if (result.hasOwnProperty('length')) {
if (result.length >= 1) {
for (i = 0; i < result.length; i++) {
var sentDate = result[i];
}
} else {
$(requiredTable).append('Length is 0');
}
} else {
$(requiredTable).append('Length is not available.');
}
} else {
$(requiredTable).append('Result is null.');
}
}

Return Only Specific Values From Ajax JSON call

I'm having trouble with filtering the returned data from an Ajax JSON call. Right now, it returns:
{"results":[{"text":"RoboChat: What is it like to feel?","username":"RoboChat","createdAt":"2014-06-04T20:01:15.268Z","updatedAt":"2014-06-04T20:01:15.268Z","objectId":"wG2cs1OnVY"},
I'm trying to get it to return only the "text" object, like this:
"RoboChat:What is it like to feel?"
Here is my code:
function fetch () {
$.ajax({
url:"https://api.parse.com/1/classes/chats",
type : 'GET',
dataType : 'JSON',
data : JSON.stringify({
}),
success:function(data) {
$('.messages').append("<li>" + (JSON.stringify(data)) + "</li>")
}
});
};
I've tried passing a filter to JSON.stringify, but with no success, I'm not even sure if that's the way to approach filtering the data. Any help would be much appreciated.Thanks!

You can't really change what a request returns, but you can of course use the resulting value in any way you want. Since the response contains multiple objects with text properties, you have to iterate them and extract the text:
success: function(data) {
var results = data.results;
results.forEach(function (result) {
$('.messages').append("<li>" + result.text + "</li>");
});
}

The returned JSON has a results property which is an array, you can iterate through the array and read the text property of each element:
$.each(data.results, function(index, element) {
console.log(element.text);
});
For creating a li element for each array's element, you can use the $.map utility function:
var li = $.map(data.results, function(element) {
return '<li>' + element.text + '</li>';
});
$('.messages').append(li);

try for, the data has an array named results, from wich you have to select the first like following:
success: function(data) {
var results = JSON.parse(data).results;
results.forEach(function (result) {
$('.messages').append("<li>" + data.results[0].text + "</li>");
});
}

Get data from Json using jquery

I have the following json data, which is located in the url http://localhost/stock/index.php/masterfiles/itemgriddata
[{"name":"asdasd","code":"123","id":"1","unit":"Nos","purprice":"25000"},{"name":"Item2","code":"1235","id":"2","unit":"Nos","purprice":"0"}]
I want to get the value of name and code where id equal to 1, and store them as variables using jquery .
I know there is a method like,
$.getJSON('http://localhost/stock/index.php/masterfiles/itemgriddata', function(data) {
console.log(data);
});
but I don't know how to implement it. Can any one help me find the solution?

$.getJSON('http://localhost/stock/index.php/masterfiles/itemgriddata', function(data) {
$.each(data, function(index, val) {
if( val.id == '1'){
var name = val.name,
code = val.code,
unit = val.unit,
purprice = val.purprice,
id = val.id;
}
})
});
But if you want to store all result in array then:
var dataarr = [];
$.getJSON('http://localhost/stock/index.php/masterfiles/itemgriddata', function(data) {
$.each(data, function(index, val) {
if( val.id == '1'){
dataarr.push(
val.name,
val.code,
val.unit,
val.purprice,
val.id;
);
})
});
For more more detail see doco.

You can iterate over the array and check for the object which has id "1" as
arr = [{"name":"asdasd","code":"123","id":"1","unit":"Nos","purprice":"25000"},{"name":"Item2","code":"1235","id":"2","unit":"Nos","purprice":"0"}]
$.each(arr, function(i,ele){
if (ele.id =="1"){
alert(ele.name)
alert(ele.code)
}
});

You can try something like:
$.getJSON('http://localhost/stock/index.php/masterfiles/itemgriddata', function(data) {
var results = [];
$.each(data, function(key, val) {
if (val.id === "1") {
results.push(val.name);
results.push(val.code);
}
});
// Then you can do whatever you want to do with results
});