This is my html where i want to get below json values:
<div id='bodyText'></div>
Here i have json encoded PHP value for
$page->results()
as follows in below jquery items:
[{name:'abc',id:'10'},
{name:'def',id:'20'}]
And below using jquery code how would i get these above values within div elements with id 'bodyText'.
$(document).ready(function(){
var items = <?php echo json_encode($page->results()); ?>;
$.each(items, function(key, val) {
$('bodyText').append($.text(val));
});
});
I am unable to get the values please help me to solve the problem...
you are not correct referencing bodyText div id. Try this
$(document).ready(function(){
var items = <?php echo json_encode($page->results()); ?>;
$.each(items, function(key, val) {
$('#bodyText').append($.text(val));
});
});
you need to change this $('bodyText').append($.text(val)); to $('#bodyText').append($.text(val));
Related
So i am trying to learn Ajax with jQuery, to retrieve some information. At the moment, I have problem to get the information. My code is very simple at the moment, just because I want to learn how it works. This is my HTML code.
<h2>Hello world</h2>
<p id="response"></p>
My jQuery code:
$(function(){
$('h2').on('click', function() {
$.ajax({
url: "ajax.php",
type: "get",
datatype: "json",
success: function(data){
$.each(data, function(i, key){
$("#response").html(key['name'])
});
},
error: function(data){
console.log("tjohejsan");
}
})
});
});
So when I click on h2 it should retrieve data. What I want is to make a call from my database to get information about the users.
So my php code looks like this:
$sql = "SELECT * FROM moment2";
$result = mysqli_query($db,$sql) or die("Fel vid SQL-fråga");
$array = array();
while($row = $result->fetch_assoc())
{
$array[] = $row;
}
echo json_encode($array);
At this point, this is where it fails. I don't know really where the problem is. Because I want an associative array.
I would appreciate it if you could assist me, because as I mentioned, I don't really know how to solve it from here.
Thanks in advance!
EDIT: I realised I had a typo while writing this. changing data['name'] to key['name']
You have issue in the jquery each function. Replace the success function as
success: function(data){
$.each(data, function(i, key){
$("#response").html(key['name'])
});
},
It is because jquery each function has key and value as argument, so only replace "data" by "key" in your this line: $("#response").html(data['name'])
There are a couple places that you are going to run into trouble with this. Here is a JSFiddle for you to reference with my tips below:
https://jsfiddle.net/MrProvolone/zgw9ymv3/2/
There are a few things to consider...
1). Your returned data needs to be converted using parseJSON(), which is a built in jQuery function. This will convert your JSON string into a JavaScript object.
2). When you are looping through your object, you need to include the number (i) that you are trying to access
3). Because we are making a new object variable, we don't need the "key" designator in your $.each() function call... so it becomes $.each(data, function(i){}); instead of $.each(data, function(i, key){});
3). When you are trying to write out your html, you must grab what is already in the container, then add your new html to it, and finally write it all back out to the container.
Here is a step by step:
Instead of:
success: function(data){
$.each(data, function(i, key){
$("#response").html(key['name'])
});
}
We need to add the parsing (and remove the "key" variable per #3 above) so it becomes this:
success: function(data){
var parsed = jQuery.parseJSON(data);
$.each(data, function(i){
$("#response").html(key['name']);
});
}
Now we have a new variable to work off of (parsed) so we need to change both the $.each line, and the .html() line to make sure it uses that new variable....
So this:
$.each(data, function(i, key){
$("#response").html(key['name']);
});
Becomes this:
$.each(parsed, function(i){
$("#response").html(parsed['name']);
});
But that still won't work. We are looping through the object, so when we try to access a value, we have to specify which element in the object we are trying to get to. So anywhere in your loop that looks like this:
parsed['keyname']
becomes this:
parsed[i]['keyname']
So now we have:
$.each(parsed, function(i){
$("#response").html(parsed[i]['name']);
});
At this point you should be getting some html in your container. However, you will notice that you are only getting the value of the last row of your data. That is because you are overwriting ALL of your html in the container in each loop, instead of adding to what is already there. We need to make a new variable to fix this. So this:
$.each(parsed, function(i){
$("#response").html(parsed[i]['name']);
});
Becomes this:
$.each(parsed, function(i){
var oldhtml = $("#response").html();
$("#response").html(oldhtml + '<br>' + parsed[i]['name']);
});
Now you will see each result, with a html line break between each one.
Hope this helps!
In your js, on the success callback, you are using the wrong data, and not appending the data retrieved to the html Tag
Here is an essai
success: function(data){
if(typeof data != "object"){
data = JSON.parse(data);
}
$.each(data, function(i, key){
$("#response").append(key['name'])
});
}
This question already has answers here:
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
(7 answers)
Closed 6 years ago.
I´m using jquery get function to retrieve data from the server (Laravel application). The data is bysically an array of objects. Simplified the .js code looks like this:
$(function(){
var results = [];
var getIt = function(){
$.get('results', function(response){
$.each(response, function(index, value){
results.push(value);
});
});
};
getIt();
console.log(results.length);
});
But the console logs 0, so the array is empty;
What is wrong with it. The array should be available
to later functions. Thanks for advice.
You're using the results array before it has been populated. You need to wait for your GET /results to return first. Assuming the rest of your code works, the following change will console.log the populated array:
$(function(){
var results = [];
var getIt = function(){
$.get('results', function(response){
$.each(response, function(index, value){
results.push(value);
});
console.log(results.length);
});
};
getIt();
});
Because $.get is asynchronous, the results variable is still empty when the code is called. To see what I mean, try this:
$(function(){
var results = [];
var getIt = function(){
$.get('results', function(response){
$.each(response, function(index, value){
results.push(value);
});
getIt();
console.log(results.length);
});
};
});`
I am trying to populate a table from mysql based on a select box option using jquery ajax, so far this is my jquery code. I can show the result on the alert box but i dont know how to send it to php so that i can loop thru the array and create the table.
// selector de campaña en reporte de clientes mas activos
$(document).ready(function(){
$('.selector-camp').change(function(){
var campaing = $('.selector-camp').val();
$.post( "../campanas/test", { 'camp': campaing },
function( data ) {
alert( data.result );
}, "json");
});
});
As I use JavaScript more than jquery, I'll write it in JavaScript and I am sure you can do that in Jquery too, but in JavaScript it's also easy to do
function( data )
{
createTable(data.result); //pass your json array to JS function
}, "json");
//here i create js function
function createTable(array)
{
var array = JSON.parse(array); //decoding from json format
//So if i have numbers in array like [1, 2, 3, 4] and want
//to create row with them something like this should be done
var table = document.createElement("table"); //create table
var tr = document.createElement("tr"); //create row
for(var i=0; i<array.length; i++)
{
var td = document.createElement("td");
td.innerHTML = array[i];
tr.appendChild(td);
//for each array element creates cell and appends to row
}
table.appendChild(tr);
//Then you can have some empty div and append table to it
var div = //your empty div
div.appendChild(table);
}
Please check below php prototype code as per your requirement.
From ajax please make a call to this file it will return you a json response since I have used json_encode() function, you can directly return array as well but I would not suggest that, also you can edit this code for further mysql query.
<?php
test();
function test(){
$camp = htmlspecialchars($_POST['camp']);
isset($camp)&&!empty($camp)?
$data = array('test_key'=>'test_value');
echo json_encode($data);
}
?>
I have created APIs to retrieve data from my server and then I get the data with json format like this :
{
"items": [
{
"2013-03-28": 1771,
"2013-03-29": 1585,
"2013-03-30": 1582,
"2013-03-31": 1476,
"2013-04-01": 2070,
"2013-04-02": 2058,
"2013-04-03": 1981,
"2013-04-04": 1857,
"2013-04-05": 1806,
"2013-04-06": 1677,
"2013-04-07": 1654,
"2013-04-08": 2192,
"2013-04-09": 2028,
"2013-04-10": 1974,
"2013-04-11": 1954,
"2013-04-12": 1813,
"2013-04-13": 1503,
"2013-04-14": 1454,
"2013-04-15": 1957,
"2013-04-16": 1395
}
]
}
How do I looping with my json data dynamically using jQuery?
My code :
<html>
<head></head>
<body>
<script src="jquery-1.9.1.js"></script>
<script>
$(document).ready(function() {
$.ajax({
type : "GET",
url: "myurl.php",
cache: false,
dataType: "jsonp",
success:function(data){
if(data==''){
alert('Fail');
}else{
alert('Success');
}
}
})
});
</script>
</body>
</html>
How do I modify my jQuery to get data dynamically following the date that the data will change every day as in the example I wrote above data??
Thanks before...
There are a few things to consider with your example data, but in your case, the following will do the trick:
var importantObject = data.items[0];
for(var item in importantObject ){
var theDate = item;//the KEY
var theNumber = importantObject[item];//the VALUE
}
Here is a working example
But what does all this mean?...
First of all, we need to get the object that we want to work with, this is the list of dates/numbers found between a { } (which means an object) - an array is defined as [ ]. With the example given, this is achieved like so:
var importantObject = data.items[0];
because items is an array, and the object we want is the first item in that array.
Then we can use the foreach technique, which effectively iterates all properties of an object. In this example, the properties are the date values:
for(var item in importantObject ){ ... }
Because we are iterating the properties, item will be the property value (i.e. the date bit), so item is the date value:
var theDate = item;//the KEY
Finally we get the number part. We can access the value of any given object property by using the string value of the property index (relative to the object), like so:
var theNumber = importantObject[item];//the VALUE
If you already know which date you want the value for, then you can access it directly like so:
var myValue = data.items[0]["2013-04-16"];//myValue will be 1395 in this example
Using jQuery.each() loop through the items
$.each(data.items[0], function (key, value) {
console.log(key + ": " + value);
var date = key;
var number = value;
});
DEMO HERE
You can use the jQuery each function to do this. For example like this:
$.each(data, function(k, v) {
// Access items here
});
Where k is the key and v is the value of the item currently processed.
//get your detail info.
var detail = data.items[0];
$.each(detail, function(key, val) {
console.log(key + ": " + val);
}
Ive got textarea area on each table row with unique ID .
How to retrieve that unique id with javascript?
PHP:
$query = $db->query("SELECT * FROM bs_events WHERE eventDate = '".$date."'");
while($row = $query->fetch_array(MYSQLI_ASSOC)){
echo '<textarea id=\"att_name_" . $row['id'] . "\" style=\"width:300px\"></textarea>";'
}
PHP OUTPUT:
<textarea id="att_name_1" style="width:300px">
<textarea id="att_name_2" style="width:300px">
<textarea id="att_name_3" style="width:300px">
jQuery:
$(document).ready(function(){
$("#book_event").submit(function(){
id = event.target.id.replace('att_name_','');
$.post("Scripts/book_event.php", {
att_name: $("att_name_"+id).val(),
}, function(data){
if(data.success) {
$("#err").text(data.message).fadeIn("slow");
}
}, "json");
});
});
It looks to me like you're naming your textareas to correlate to the database entries, then trying to make updates and pass those values back. Assuming the textareas are in the form you're submitting, you can use:
$('#myform').submit(function(e){
// find each of those text areas
$(this).find('textarea[id^=att_name]').each(function(i,e){
//
// from here-in, e now represents one of those textareas
//
// now submit the update
$.post('Scripts/book_event.php',{
att_name: $(e).val()
},function(data){
if (!data.success)
$("#err").text(data.message).fadeIn("slow");
},'json');
});
e.preventDefault();
});
Ideally though, if you're looking to use AJAX to push updates/changes back to the server, you may look in to .serialize() and push all forms back. Then, on the server-side you'll get the standard $_POST['att_name_1'] values that you can use for your actual updating. e.g.
// .serialize() example
$('#myform').submit(function(e){
$.post('Scripts/book_event.php',$(this).serialize(),function(data){
if (!data.success)
$("#err").text(data.message).fadeIn("slow");
});
e.preventDefault();
});
To solve your problem, you can use each()
$(function()
{
$("textarea").each(function()
{
var textarea_id = $(this).attr('id');
});
});
I don't fully understand the question.
If you want a list of the ids, how about something like:
$(document).ready( function ( ) {
var textareas = new Array();
// Run through each textbox and add the id to an array
$("textarea").each( function( ) {
textareas.push( $(this).attr("id") );
});
// Print out each id in the array
textareas.forEach( function(i) { alert(i); });
});
(that's untested and probably not the quickest way - I'm a bit out of practice)