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JS/POST/AJAX success - loosing other js functionalities on page

I have such script that works ok but after success I cannot do anything with the js until refresh the page.
My code looks as follow:
<script>
$("#submit_comment").click(function() {
var url = "{$sitepath}/comment.php"; // the script where you handle the form input.
$.ajax({
type: "POST",
url: url,
data: $("#cform0").serialize(), // serializes the form's elements.
success: function(data)
{
$("#myHeader").load(location.href + " #myHeader > *", "");
}
});
return false; // avoid to execute the actual submit of the form.
});
</script>
It works if I change the
$("#myHeader").load(location.href + " #myHeader > *", "");
to:
$("#myHeader").load("#myHeader");
but then myHeader appears again in myHeader on page.
The question. Is there any possible to load the myHeader and keep the JS on site(sesion)?
Thanks for any suggestions.

Add javascript function to wordpress page

I have a page that locates a link inside it and when that link is clicked it should save some data in database.
Besides, I have a file named "add.php" that communicates with the DB and operates well.
In my wordpress page I have added below codes for accessing the add.php file and send some parameters to it.
<a href="javascript:add(true);" >Click Me</a>
<script type="text/javascript">
function add(b){
$(document).ready(function(){
var result = $.ajax({
type: "POST",
url: "add.php",
data: { add: b }
});
result.done(function(msg) {
alert(msg);
});
result.fail(function(jqXHR, textStatus) {
alert( "No such data exists: " + textStatus );
});
});
}
</script>
I had this exact code in an html file and it worked smoothly. but it doesn't work on wordpress page like that.
Plus, the problem is that when I click the link -Click Me- it doesn't do anything.
please tell me where the problem is and how to solve it ?

I would recommend you to use this:
<a href="#" data-add="true" class='hitClick'>Click Me</a>
<!--use data* attributes to pass specific data -->
now in your function:
function add() {
event.preventDefault(); //<------make sure to add it.
var result = jQuery.ajax({
type: "POST",
url: "add.php",
data: {
add: jQuery(this).data('add')
}
});
result.done(function(msg) {
alert(msg);
});
result.fail(function(jqXHR, textStatus) {
alert("No such data exists: " + textStatus);
});
}
jQuery(document).ready(function(){
jQuery('.hitClick').on('click', add); // bind the click and use as callback
});

Form submit Ajax using jQuery sometimes does not works

I am doing form data submit using Ajax with jQuery.
When I submit form on popup window, I refresh the parent page.
My code:
$(document).ready(function() {
$("#frm_addSpeedData").submit(function(event) {
//event.preventDefault();
$.ajax({
type: "POST",
url: "/webapp/addSpeedDataAction.do",
data: $(this).serialize(),
success: function(data) {
//console.log("Data: " + data);
window.opener.location.reload();
}
});
});
});
However page gets refreshed on success of callback but i can not see update on my parent page. Sometimes I can see updates and sometimes not. What is the issue? I also need to know how I can write it in native javascript and submit form using ajax javascript.

Maybe your getting this error due the fact that javascript is async and your code will proceed even when you have yet no response from the request.
Try this:
$(document).ready(function() {
$("#frm_addSpeedData").submit(function(event) {
//event.preventDefault();
$.ajax({
type: "POST",
url: "/webfdms/addSpeedDataAction.do",
data: $(this).serialize(),
async: false, // This will only proceed after getting the response from the ajax request.
success: function(data) {
//console.log("Data: " + data);
window.opener.location.reload();
}
});
});
});

Jquery method executed several time

I'm trying to implement simple Comet chat example and for this I implemented Long polling which calls itself recursively every 30 seconds.
When pressing on button I want another ajax request to send new data on Server using POST.
For now I just put alert to this function to trigger click event
<script src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<script type="text/javascript">
var polling = function poll(){
$("#postMessage").click(function () {
alert("request");
});
$.ajax({ dataType: 'json',url: "CometServlet", success: function(data){
if (data !=null){
$('#message').append(data.sender+" : " + data.message+"<br />");
}
}, complete: poll, timeout: 30000 });
}
$(document).ready(polling)
</script>
And my HTML is like this:
<div>
<input type="button" id="postMessage" value="post Message">
</div>
<div id ="message" name="message"></div>
When I click on button my alert is shown several times. Why? How can I solve it?

As Dave mentions, that's not what the timeout option is for. Try something using setTimeout instead. Also, you're mixing your polling logic and your click handler (I think). Here's how you would separate them:
function poll() {
$.ajax({
dataType: 'json',
url: "CometServlet",
success: function(data){
if (data !=null){
$('#message').append(data.sender+" : " + data.message+"<br />");
}
},
complete: function () {
setTimeout(poll, 30000);
}
});
}
$(document).ready(function () {
$("#postMessage").click(function () {
alert("request");
});
poll();
});
Example: http://jsfiddle.net/VyGTh/

In your code after every Ajax call you re-bind click event to #postMessage and that's why you had couple of alert messages. You need to bind click only once in page load. You can fix it by doing something like:
<script src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<script type="text/javascript">
var polling = function poll(){
$.ajax({ dataType: 'json',url: "CometServlet",
success: function(data){
if (data !=null){
$('#message').append(data.sender+" : " + data.message+"<br />");
}
},
complete: poll,
timeout: 30000
});
}
$(document).ready(function(){
// Now Click only binds one time
$("#postMessage").click(function () {
alert("request");
});
polling();
});
</script>

Search box in a jQuery ajax success page - issues in loop

Firstly, there have some tag links in my main page. click each one, post value to b.php with jquery.ajax and turn back value in div#result.
b.php have a search box. when search something in it. the result data will still show in the div#result.
my problem is: I know if I will do jQuery ajax in the b.php, I shall write the jQuery code in the first success part. but this only can control one time, when I continue search in the search box, the jQuery not work. I think I met a loop problem. How to solve it?
a.php
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('.click').click(function(){
var value1 = $(this).text();
$.ajax({
url: "b.php",
dataType: "html",
type: 'POST',
data: "data=" + value1,
success: function(data){
$("#result").html(data);
$('#search').click(function(){
var value = $('#search1').val();
$.ajax({
url: "b.php",
dataType: "html",
type: 'POST',
data: "data=" + value,
success: function(data){
$("#result").html(data);
}
});
});
}
});
});
});
</script>
<a rel="aa" class="click">aa</a>
<a rel="aa" class="click">bb</a>
<div id="result"></div>
b.php
<?php
echo $_POST['data'];
?>
<form name="form">
<input type="text" value="" id="search1">
<a name="nfSearch" id="search">search</a>
</form>

When a new element is introduced to the page the jQuery .click() method becomes useless because it can only see elements that were part of the original DOM. What you need to use instead is the jQuery .live() method which allows you to bind events to elements that were created after the DOM was loaded. You can read more about how to use it at the below link.
.live() – jQuery API
$('#search').live('click', function(e) {
// Prevent the default action
e.preventDefault();
// Your code here....
});

First of all i think you should attach the ajax call to the click on the link: the way you are doing right now just execute an ajax call as soon as the page is loaded.
$(document).ready(function(){
//when you click a link call b.php
$('a.yourclass').click(function(){
$.ajax({
url: "b.php",
dataType: "html",
type: 'POST',
data: "data = something",
success: function(data){
$("#result").html(data);
var value = $('#search').val();
$.ajax({
url: "b.php",
dataType: "html",
type: 'POST',
data: "data =" + value,
success: function(data){
$("#result").html(data);
}
});
}
});
});
});
In this way, each time a link with the class of "yourclass" is clicked an ajax call to b.php is sent and if it succed, another call is made (always to b.php). I don't understand if this is what you are looking fo, if you post your html my answer can be better.
In b.php of course you need to echo some html that can be used in the callback

It's strange how your attempting to do two ajax requests like that, surely one is enough. If you need to support multiple text boxes then you just adjust your selectors.
Your whole code can be shortended down to something like this:
$(document).ready(function() {
$('#result').load('b.php', { data: $('#search').val() });
});
So if you wanted to search for the value when clicking on a link (for links within #container):
$('#container').delegate('a', 'click', function() {
// .text() will get what's inside the <a> tag
$('#result').load('b.php', { data: $(this).text() });
});