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.html() not displaying fields

I am currently trying to use .html() to display out the resident id, name and telephone number. However, there is nothing appearing on my page. When I check my console for any errors, there were none. There is no error with the php and residentid is in the localstorage.
html
<div role="main" class="ui-content" id="main-ui">
<div id="txtresidentid"></div>
<div id="txtresident_name"></div>
<div id="txtresident_telephone_home"></div>
</div>
javascript
(function () {
var residentid;
var resident_name;
var resident_telephone_home;
$(document).ready(function () {
getProfile();
});
function getProfile() {
var url = serverURL() + "/getresidentprofile.php";
var JSONObject = {
"residentid": localStorage.getItem("residentid")
};
$.ajax({
url: url,
type: 'GET',
data: JSONObject,
dataType: 'json',
contentType: "application/json; charset=utf-8",
success: function (arr) {
_getProfileResult(arr);
},
error: function () {
validationMsg();
}
});
}
function _getProfileResult(arr) {
residentid = arr[0].residentid;
resident_name = arr[0].resident_name;
resident_telephone_home = arr[0].resident_telephone_home;
$("#txtresidentid").html("Residentid : " + residentid);
$("#txtresident_name").html("Name: " + resident_name);
$("#txtresident_telephone_home").html("Telephone(Home): " + resident_telephone_home);
}
})();

Try this:
$("#txtresidentid").append("Residentid : " + residentid);
$("#txtresident_name").append("Name: " + resident_name);
$("#txtresident_telephone_home").append("Telephone(Home): " + resident_telephone_home);

400 bad request for ajax call with GET request parameter passed to controller in spring

i'm showing a drop down list in a page based on the selection i have to show dependent drop down by passing the selected value in drop down list to the controller and return json data as response.please find below code and help me for resolving this .
Please find below ajax code
<script type="text/javascript">
jQuery(document).ready(function () {
$.ajax({
type: 'POST',
dataType : 'json',
contentType : "application/json",
url : "${home}getOPList",
cache: false,
success: function(response){
// var str = JSON.stringify(response);
var operatorList;
// alert("yes");
// alert(str);
for (var i = 0; i < response.length; i++ )
{
console.log(response[i].listOfOperators);
operatorList +="<option value =' "
+ response[i].sno +
" '>"
+ response[i].listOfOperators +
"</option>"
}
$('#opList').html(operatorList);
},
error: function(){
alert('Error while request..');
}
});
$("#opList").change(function(){
$.ajax({
type: 'GET',
dataType : 'json',
contentType : "application/json",
url : "${home}partnerDetails?operator =" +opList,
cache: false,
success: function(response){
// var str = JSON.stringify(response);
var partnerList;
alert("yes");
alert("oplist " + opList);
for (var i = 0; i < response.length; i++ )
{
console.log(response[i].campaignName);
partnerList +="<option value =' "
+ response[i].sno +
" '>"
+ response[i].campaignName +
"</option>"
}
$('#ptList').html(partnerList);
},
error: function(){
alert('Error while request in partners..');
}
});
});
});
</script>
above is the ajax code and when the code gest executed it is directly showing " Error while request in partners.. ".in console it says it is a bad request with 400 response code for the below url.
http://localhost/Promotions/partnerDetails
please suggest on this

How to send and retrieve information/

I have a php file saven on a different domain, and Im using this piece of code to send the username and with that get the info of the user.
Im trying to do something like this, but this is not working is there a way to do it.
var dataString = "username="+username+"";
var url = "";
$.ajax({
type: "POST",
url: url,
data: dataString,
crossDomain: true,
cache: false,
success: $.getJSON(url, function(result)
{
console.log(result);
$.each(result, function(i, field)
{
var id = field.id;
var username = field.username;
var email = field.email;
$('#profile-info').append("ID: " + id + "<br>Username: " + username + "<br>Email: " + email + "<br><br>");
});
})
});

Replace the $.getJSON() function you have for the success calback provided by the jQuery ajax function, and you can pass directly the username through the data parameter as { username : username }, because it's already defined.
Then when you receive successfully your data you can iterate over each result using the jQuery $.each function.
Do you really need to set the cache parameter to false?, just to know.
Also if you want use let instead of var, those variables will be just within the $.each "block".
<script>
var url = '';
$.ajax({
type: "POST",
url: url,
data: { username: username },
crossDomain: true,
cache: false,
success: function(result) {
console.log(result);
$.each(result, function(i, field) {
let id = field.id,
username = field.username,
email = field.email;
$('#profile-info').append("ID: " + id + "<br>Username: " + username + "<br>Email: " + email + "<br><br>");
});
}
});
</script>

How to correctly post data with ajax into div?

Script:
function buttonBuild(id, building, nick)
{
$("#BuildedBox").ajax({
type: "POST",
url: "BlockEditor/build.php",
data: 'block_id=' + id + '&building=' + building + '&nick=' + nick,
cache: false,
success: function(response)
{
alert("Record successfully updated");
$.load("#BuildedBox")
}
});
}
build.php:
include_once("$_SERVER[DOCUMENT_ROOT]/db.php");
$block_id = $_GET['block'];
$building = $_GET['building'];
$nick = $_GET['nick'];
echo"$block_id - $building - $nick";
index.php:
<a href=\"#\" onClick=\"buttonBuild(k152, digger, Name);\" >[BUILD]</a>
<div id="BuildedBox"></div>
seems my script wont work. what i have done wrong?

check this out
function buttonBuild(id, building, nick)
{
$.ajax({
type: "POST",
url: "BlockEditor/build.php",
data: 'block_id=' + id + '&building=' + building + '&nick=' + nick,
cache: false,
success: function(response)
{
alert("Record successfully updated");
/***************/
$("#BuildedBox").html(response);
/***************/
}
});
}

var weightd = $("#weight").val();
var user_id = 43;
$.ajax({
type: "POST",
url:"<?php bloginfo('template_directory')?>/ajax/insert.php",
data: { weight:weightd,user_ids:user_id},
success:function(result){
$("#result1").html(result);
});
<div id="result1">Result div</div>

change $.load("#BuildedBox") to $("#BulderBox").html(response).
When you ask the script for data via ajax, the data provided gets into the "response" variable. As you want to write this data into the div, you must use the ".html" method.
Easier using "load" in this way:
function buttonBuild(id, building, nick)
{
$("#BuildedBox").load("BlockEditor/build.php?block_id=" + id + "&building=" + building + "&nick=" + nick);
}
The "load" method loads data from the server and writes the result html into the element: https://api.jquery.com/load/
EDIT:
As #a-wolff says in the comment, to use POST in load, you should construct like this:
function buttonBuild(id, building, nick)
{
$("#BuildedBox").load("BlockEditor/build.php",{
block_id:id,
building:building,
nick:nick
});
}

ajax doesn't update on first click

I have a problem with my code, it's a like button. It shows the number of likes. If user haven't voted yet (cookie) he can click and counter increases. Problem is counter doesn't update on first click (if i deactivate cookie check and vote several times) on next refresh is everything updated. It seems some count happens before insert in the backend. I suppose probem is in JavaScript, ajax post cross domain works but gives error that's why "error: setCookieAndUpdateButton()"
here is my frontend code:
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script src="http://code.jquery.com/jquery-migrate-1.2.1.min.js"></script>
<div><a id="like_button" href="#">Like</a></div>
<script>
var url = "http://thumbs-up.some-server.com/";
var appName = "next_test";
document.write("<script src=\"" + url + "jquery.cookie.js\"><\/script>");
$(document).ready(function(){
updateButton();
$("#like_button").click(function(){
if ($.cookie(appName + "_voted") == "true") {return;}
$.ajax({
type: "POST",
dataType: "json",
crossDomain: true,
url: url + "increase_counter.php",
data: {referrer: appName},
success: setCookieAndUpdateButton(),
error: setCookieAndUpdateButton()
});
});
});
function setCookieAndUpdateButton()
{
updateButton();
$.cookie(appName + "_voted", "true", {expires: 20*365});
}
function updateButton()
{
$.ajax({
type: "GET",
async: false,
contentType: "application/json",
dataType: "jsonp",
jsonpCallback: 'callback4jquery',
url: url + "get_counter_for_referrer.php",
data: {referrer: appName},
success: function (json) {
if ($.cookie(appName + "_voted") != "true"){
$("#like_button").html("<a id=\"like_button\" href=\"#\"><img src=\"" + url + "like.png\">Good to know " + json.count + "x</a>")
}
else{
$("#like_button").html("<span id=\"like_button\"><img src=\"" + url + "like.png\">Good to know " + json.count + "x</span>");
$('#like_button').unbind('click');
}
}
});
}
</script>

In first ajax call change your code like this:
success: setCookieAndUpdateButton,
error: setCookieAndUpdateButton
without () in both of them