Develop Reference

How to use pass ajax data that is displaying in html?

I have a question, that I can't seem to find the 'best' solution for my question.. I have an AJAX call that displays data in the DOM, via jQuery.
JSON
[{
"id":"123"
},
{ "id":"456"
}]
JS
$(document).ready(function() {
$.ajax({
url: 'get/data',
dataType: 'json',
data: '{}',
success: function(data) {
var html = '';
$.each(data, function(i) {
html += '<p>My ID: ' + data[i].id + '</p>';
}
$('#id').append(html);
},
error: function(err) {
console.log(err);
}
})
});
As you can see I am displaying that data here. I would like to pass that ID to another AJAX call by selecting a checkbox and pushing a button or perhaps clicking a link. Whats the best way to accomplish this?
EDIT: I apologize, my actual issue is related to array data. I have updated the code. I am displaying an JSON array in the html now, and I want to pass the id of the user/row that I click?
Thanks,
Andy

$(document).ready(function() {
var resid;
$.ajax({
url: 'get/data',
dataType: 'json',
data: '{}',
success: function(data) {
resid = data.id;
var html = '';
html += '<p>My ID: ' + data.id + '</p>'; $('#id').append(html);
},
error: function(err){
console.log(err);
}
});
$('link').click(function () {
// pass id to second ajax
});
});

try jquery-template
https://github.com/codepb/jquery-template
hope help you

Communication beetween Javascript and PHP scripts in web app

THE CONTEXT
I'm developing a web app that loads contents dynamycally, retrieving data from a
catalogue of items stored as a MongoDB database in which records of the items and their authors are in two distinct collections of the same database.
Authors ID are stored in the item field creator and refer to the author field #id. Each item can have none,one or many authors.
Item sample
{
"_id" : ObjectId("59f5de430fa594333bb338a6"),
"#id" : "http://minerva.atcult.it/rdf/000000016009",
"creator" : "http://minerva.atcult.it/rdf/47734211-2637-3895-a690-4f33412931ec",
"identifier" : "000000016009",
"issued" : "fine sec. XIV - inizi sec. XV",
"title" : "Quadrans vetus",
"label" : "Quadrans vetus"
}
Author sample
{
"_id" : ObjectId("59f5d8e80fa594333bb1d72c"),
"#id" : "http://minerva.atcult.it/rdf/0007e43e-107f-3d18-b4bc-89f8d430fe59",
"#type" : "foaf:Person",
"name" : "Risse, Wilhelm"
}
WHAT WORKS
I query the database submitting a string in a form, using this PHP script
ITEM PHP SCRIPT
<?php
require 'vendor/autoload.php';
$title=$_GET['item'];
$client = new MongoDB\Client("mongodb://localhost:27017");
$db=$client->galileo;
$collection=$db->items;
$regex=new MongoDB\BSON\Regex ('^'.$title,'im');
$documentlist=$collection->find(['title'=>$regex],['projection'=>['_id'=>0,'title'=>1,'creator'=>1,'issued'=>1]]);
$items=$documentlist->toArray();
echo (json_encode($items));
?>
called by a Javascript script (new_search.js) using ajax, that has also the responsibility to attach to html document a <li class=item> for every item that matches the query, inserting the JSON fields and putting them in the provided tags ( <li class=item-name>,<li class=auth-name, and the last <li> in div class=item-info for date).
WHAT DOES NOT WORK
My intent is reproduce the pattern to retrieve author names from another collection in the same database, querying it using author field #id from the html tag <li class=auth-name, using a similar php script and a similar ajax call.
I tried to make a nested ajax call (in the one I used to retrieve the items infos) to invoke author_query.php that performs the MongoDB query on the collection of authors.
So, the question is: Is it possible use the $_GET superglobal to get the html tag that contains the author id #id in order to search it in the database?
Otherwise, how can I adjust the code to pass a javascript variable to php (not by user input) that lets me keep the content already loaded on the page?
UPDATES
To make clearer the question, I follow the tips in the comments and I updated my scripts using JSON directly to provide the needed data.
I also perfom a debug on the js code and it's clear that PHP don't provide any response,in fact ajax calls for authors name fails systematically.
I suppose that occurs because PHP don't receive the data dueto the fact I'm not using the correct syntax probably (in js code or in the php with $_GET or in both) to pass the variable author (I also tried data:'author='+author treating the JSON object author has a string). Anyway I don't understand what is the correct form to write the variable to pass using the data field of ajax().
MY SCRIPTS
JS SCRIPT new_search.js
$(document).ready(function () {
$("#submit").on("tap", function () {
var item = document.getElementById("search").value;
var author;
$.ajax({
url: "item_query.php",
type: "GET",
data: 'item=' + item,
dataType: "json",
async:false,
success: function (items) {
for (var i = 0; i < items.length; i++) {
$("#items-list").append(
'<li class="item">' +
'<div class="item-photo-container">' +
'<img src=images/item_126.jpg>' +
"</div><!--end item-photo-container-->" +
'<div class="item-info">' +
'<ul>' +
'<li><a><h3 class="item-name">' + items[i].title + '</h3></a></li>' +
'<li class="auth-name">' + items[i].creator+ '</li>' +
'<li>' + items[i].issued + '</li>' +
'</ul>' +
'</div><!--end item-info-->' +
'</li><!--end item-->'
);
}
}
});
$('.item').each(function () {
author = $(this).find('.auth-name').text();
if (author == 'undefined')
$(this).find('.auth-name').text('Unknown');
else if(author.indexOf(',')!=-1) {
author='[{"author":"'+author+'"}]';
author=author.replace(/,/g,'"},{"author":"');
author = JSON.parse(author);
console.log(author);
$.ajax({
url: "author_query.php",
type: "GET",
data: author,
dataType: "json",
processData: false,
success: function (auth_json) {
$(this).find('.auth-name').text('');
var author_text=' ';
for(var i=0;i<auth_json.length;i++)
author_text+=auth_json.name+' ';
$(this).find('.auth-name').text(author_text);
},
error: function () {
console.log('Error 1');
}
});
}
else{
author='{"author":"'+author+"}";
author=JSON.parse(author);
$.ajax({
url: "author_query.php",
type: "GET",
data: author,
dataType: "json",
processData: false,
success: function (auth_json) {
$(this).find('.auth-name').text(auth_json.name);
},
error: function () {
console.log('Error 2');
}
});
}
});
});
});
AUTHOR PHP SCRIPT author_query.php
<?php
require 'vendor/autoload.php';
$auth=$_GET['author'];
$client = new MongoDB\Client("mongodb://localhost:27017");
$db=$client->galileo;
$collection=$db->persons;
if(is_array($auth)){
foreach ($auth as $a){
$document=$collection->findOne(['#id'=>$a],['projection'=>['_id'=>0,'name'=>1]]);
$auth_json[]=( MongoDB\BSON\toJSON(MongoDB\BSON\fromPHP($document)));
}
}
else{
$document=$collection->findOne(['#id'=>$auth],['projection'=>['_id'=>0,'name'=>1]]);
$auth_json=( MongoDB\BSON\toJSON(MongoDB\BSON\fromPHP($document)));
}
echo (json_encode($auth_json));
?>

"I'm sure that authors array... is not empty and actually contains the authors IDs". You mean the jQuery object $('.item')? I think that it is empty, because it is created too soon.
The first $.ajax call sends an ajax request and sets a handler to add more stuff to the HTML, including elements that will match the CSS selector .item. But the handler doesn't run yet because it's asynchronous. Immediately after this, the object $('.item') is created, but it's empty because the new .item elements haven't been created yet. So no more ajax requests are sent. Some time later, the call to item_query.php returns, and the new HTML stuff is added, including the .item elements. But by now it's too late.
You say the array was not empty. I suspect you checked this by running the CSS selector after doing the search, after the return of the ajax call.
A lot of newbies have problems like this with asynchronous javascript. If you want to use the result of an asynchronous function in another function, you have to call the second function inside the callback function of the first one. (Actually there are more sophisticated ways of combining asynchronous functions together, but this is good enough for now.)
On a side note, you've done this in a slightly strange way where you save data in HTML, and then read the HTML to do some more stuff. I wouldn't use HTML as a storage place - just use variables like you would for most other things.
Try this:
$.ajax({
url: "item_query.php",
...
success: function (items) {
for (var i = 0; i < items.length; i++) {
var author = items[i].creator;
var authors;
// insert code here to generate authors from author.split(',') .
// authors should look something like this: [{author: 'http://minerva.atcult.it/rdf/47734211-2637-3895-a690-4f33412931ec'}] .
$.ajax({
url: "author_query.php",
type: "GET",
data: JSON.stringify(authors),
...
success: function (auth_json) {
...
},
error: function () {
console.log('Error 1');
}
});
$("#items-list").append(
'<li class="item">' +
'<div class="item-photo-container">' +
'<img src=images/item_126.jpg>' +
"</div><!--end item-photo-container-->" +
'<div class="item-info">' +
'<ul>' +
'<li><a><h3 class="item-name">' + items[i].title + '</h3></a></li>' +
'<li class="auth-name">' + items[i].creator+ '</li>' +
'<li>' + items[i].issued + '</li>' +
'</ul>' +
'</div><!--end item-info-->' +
'</li><!--end item-->'
);
}
}
});

I make the first call to retrieve the item infos asynchronous and the nested that search for the authors name synchronous. In this way I solved the problem.
For sure it is not the best solution, and it needs a quite long,but acceptable, time (<1 second) to load the content.
JS SCRIPT
$(document).ready(function () {
$("#submit").on("tap", function () {
var item = document.getElementById("search").value;
$.ajax({
url: "item_query.php",
type: "GET",
data: 'item=' + item,
dataType: "json",
success: function (items) {
for (var i = 0; i < items.length; i++) {
var authors_names=' ';
var authors= JSON.stringify(items[i]);
if(authors.indexOf('creator')!=-1){
if(authors.charAt(authors.indexOf('"creator":')+'"creator":'.length)!='[')
authors=authors.substring(authors.indexOf('"creator":"'),authors.indexOf('"',authors.indexOf('"creator":"')+'"creator":"'.length)+1);
else
authors=authors.substring(authors.indexOf('"creator"'),authors.indexOf(']',authors.indexOf('"creator"'))+1);
authors='{'+authors+'}';
//console.log(authors);
$.ajax({
url: "author_query_v3.php",
type: "GET",
data: 'authors='+authors,
dataType:"json",
async:false,
success: function (auth_json) {
authors=[];
authors=auth_json;
var author;
for(var j=0;j<authors.length;j++){
author=JSON.parse(authors[j]);
authors_names+=author.name+" | ";
}
console.log(authors_names);
},
error: function(jqXHR, textStatus, errorThrown) {
console.log(jqXHR+' '+textStatus+ ' '+errorThrown);
}
});
}
else{
authors_names='Unknown';
}
$("#items-list").append(
'<li class="item">' +
'<div class="item-photo-container">' +
'<img src=images/item_126.jpg>' +
"</div><!--end item-photo-container-->" +
'<div class="item-info">' +
'<ul>' +
'<li><a><h3 class="item-name">' + items[i].title + '</h3></a></li>' +
'<li class="auth-name">' + authors_names+ '</li>' +
'<li>' + items[i].issued + '</li>' +
'</ul>' +
'</div><!--end item-info-->' +
'</li><!--end item-->'
);
}
}
});
});
});
PHP SCRIPT
<?php
require 'vendor/autoload.php';
$auth=$_GET['authors'];
$client = new MongoDB\Client("mongodb://localhost:27017");
$db=$client->galileo;
$collection=$db->persons;
$auth=json_decode($auth);
$auth=$auth->creator;
if(is_array($auth)) {
foreach ($auth as $a) {
$document = $collection->findOne(['#id' => $a], ['projection' => ['_id' => 0, 'name' => 1]]);
$auth_json[] = (MongoDB\BSON\toJSON(MongoDB\BSON\fromPHP($document)));
}
}
else{
$document=$collection->findOne(['#id'=>$auth],['projection'=>['_id'=>0,'name'=>1]]);
$auth_json[]=( MongoDB\BSON\toJSON(MongoDB\BSON\fromPHP($document)));
}
echo(json_encode($auth_json));
?>

Populating JSON array to drop down reserved word column name conflict

This is the first time ill use JSON. I used the json_encode(myarrayhere) to return array value as shown below.
There is a corresponding value on change of selected value on dropdown.
I verified that I get the array data by using alert(dataArray) and it returns like this
[{"title":"First"},
{"title":"Second"},
{"title":"Third"} ]
I used the word title as column name for a table I'm using in my database.
But the problem now is how to properly populate them in a drop down. I tried to do value.title but it looks like that title is a reserved word/method in php
$.ajax({
type: 'POST',
data: {ctgy: selected},
url: 'awts.php' ,
datatype: 'json',
success: function (dataArray) {
alert(dataArray);
var items = '';
$.each(result,function(name,value) {
items += "<option value='"+value.title+"'>"+value.title)+"</option>";
});
$("#dropdownselectid").html(items);
}
});
Thanks in advance.

Firstly, if you check the console you'll see that you have a syntax error. You have an extra ) when you append value.title to the HTML string.
Secondly, your $.each() call is attempting to loop through result when your data is in a variable named dataArray.
Try this:
$.ajax({
type: 'POST',
data: { ctgy: selected },
url: 'awts.php',
datatype: 'json',
success: function(dataArray) {
var items = '';
$.each(dataArray, function(name, value) {
items += '<option value="' + value.title + '">' + value.title + '</option>';
});
$("#dropdownselectid").html(items);
}
});
Working example

Trying to populate Select with JSON data using JQUERY

It looks like everything has gone fine retrieving the data from the ajax call, but I having trouble to fill the select with the JSON content, it keeps firing this error in the console:
Uncaught TypeError: Cannot use 'in' operator to search for 'length' in [{"0":"1","s_id":"1","1":"RTG","s_name":"RTG"},{"0":"2","s_id":"2","1":"IR","s_name":"IR"},{"0":"3","s_id":"3","1":"NCR","s_name":"NCR"},{"0":"4","s_id":"4","1":"RIG","s_name":"RIG"},{"0":"5","s_id":"5","1":"VND","s_name":"VND"}]
The JS is this
function populateSelect(et_id){
$.ajax({
url: "http://localhost/new_dec/modules/Utils/searchAvailableStatus.php",
type: "get", //send it through get method
data:{et_id:et_id},
success: function(response) {
var $select = $('#newStatus');
$.each(response,function(key, value)
{
$select.append('<option value=' + key + '>' + value + '</option>');
});
},
error: function(xhr) {
//Do Something to handle error
}
});
}
The JSON looks like this:
[{"0":"1","s_id":"1","1":"RTG","s_name":"RTG"},{"0":"2","s_id":"2","1":"IR","s_name":"IR"},{"0":"3","s_id":"3","1":"NCR","s_name":"NCR"},{"0":"4","s_id":"4","1":"RIG","s_name":"RIG"},{"0":"5","s_id":"5","1":"VND","s_name":"VND"}]

I think you need something like this.
function populateSelect(et_id){
$.ajax({
url: "http://localhost/new_dec/modules/Utils/searchAvailableStatus.php",
type: "get", //send it through get method
data:{et_id:et_id},
success: function(response) {
var json = $.parseJSON(response);
var $select = $('#newStatus');
$.each(json ,function(index, object)
{
$select.append('<option value=' + object.s_id+ '>' + object.s_name+ '</option>');
});
},
error: function(xhr) {
//Do Something to handle error
}
});
}

Assuming your server side script doesn't set the proper Content-Type: application/json response header you will need to parse the response to Json.
Then you could use the $.each() function to loop through the data:
var json = $.parseJSON(response);

Onclick function on div not working

I have a function for getting records from database on keyup event.
Here is my code:
function displaySearch(key) {
$.ajax({
type:"POST",
url:"searchprofile.php",
data:{
k:key
},
success:function(data){
var details_arr=data.split("+");
$('.searchresult').empty();
for(var i=0;i<details_arr.length-1;i++){
$('.searchresult').append("<div class='profile' id='searchprofile'><img class='profilepic' src='images/profile.jpg'/><div class='doctorname'><div class='pname' onclick='saveName("+details_arr[i]+")'>"+details_arr[i]+"</div></div></div>");
$('.searchresult').show();
$('.searchresult .profile').show();
}
details_arr.length=0;
}
});
}
But i am getting javascript error here saying "Unexpected token ILLEGAL".
How do i give the onclick function with the value of details_arr[i]?
Please help.

As you have jQuery, you really shouldn't inline code. As you see it makes it more difficult to handle quotes inside quoted strings (yes, you're missing quotes around your argument to saveName).
You may do this :
(function(i){
$('.searchresult').append(
"<div class='profile' id='searchprofile'>"
+ "<img class='profilepic' src='images/profile.jpg'/>"
+ "<div class='doctorname'>"
+ "<div id=someId class='pname'>"+details_arr[i] // <- give some Id
+"</div></div></div>"
);
$('#someId').click(function(){saveName(details_arr[i])});
})(i);
$('.searchresult').show();
Note that I used a closure to ensure that i has the needed value in the callback (not the value at end of iteration).
Be careful with the split: on most browsers "+aaa".split('+') makes ["", "aaa"] and as you don't iterate up to the end of the array, this sample string would made you iterate on nothing.

function openNow(x)
{
var pageUrl = '<%=ResolveUrl("~/OnFriends.php")%>'
$.ajax({
type: "POST",
url: pageUrl + '/CreateNew',
data: '{k: "'+ x +'"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success:function(data)
{
<---Now Do Your Code Hear--->
}
});
}
CreateNew is my web service what i created in .php file

I would use something like that
bare in mind ID must be unique inside a document (HTML Page)
because the content is generated on the fly; it's better to use the JQuery "on"
$(".pname").on("click", function (event) {
saveName($(this).text());
});
event handler to bind the click event
function displaySearch(key){
$.ajax({
type: "POST",
url: "searchprofile.php",
data: {
k: key
},
success: function(data) {
var details_arr = data.split("+");
var searchResults = "";
for (var i = 0; i < details_arr.length - 1; i++) {
searchResults += "<div class='profile'>" +
"<img class='profilepic' src='images/profile.jpg'/>" +
"<div class='doctorname'>" +
"<div class='pname'>" + details_arr[i] +
"</div></div></div>";
}
$('.searchresult').html(searchResults).show();
}
});
}
$(".pname").on("click", function (event) {
saveName($(this).text());
});
use the Jquery html to replace everything inside searchresult outside the loop that way it
will be called once not details_arr.length - 1 times

you should tell the line at which you are getting error
i think you did not specified you web service in ajax call at...
"url:"searchprofile.php"

Finally got the onclick function working. :)
Instead of appending the div everytime, i just editted my php page by adding the html i needed in the data that is returned in ajax.