here below code using insertdata in jquery and ajax is not working please slow this code
<script type="text/javascript">
$(document).ready(function(){
$("#btn").click(function()
{
var fname=$("#fname").val();
var lname=$("#lname").val();
//alert(fname);
var URL="insertprocess.php";
var datastring='fname'+fname+'&lname'+lname;
$.ajax()
});
});
</script>
Problem is here use = equal
var datastring='fname='+fname+'&lname='+lname;
If still getting any issue share complete code
Related
I need to populate the chart created by the JavaScript function. The chart should be populated with MySQL DB data. I have SQL query defined in myquery.php. This php code returns an array that should be used to create the chart. The question is how to execute myquery.php and get the output array that I can further use inside the JavaScript function createChartControl?
<script type="text/javascript" language="JavaScript">
function createChartControl(htmlDiv1)
{
// Draw chart
}
(function(){
createChartControl('schedule');
})();
</script>
jQuery will make your life so much easier when it comes to AJAX. If you are really against using a library, you can look at examples for xmlhttprequest, which can be used in plain javascript.
jQuery would look something like:
function ajaxCall(){
$.ajax({
url: 'myquery.php',
type: 'POST',
data: {any_var: var_value},
success: function(data) {
var returned_array = $.parseJSON(data)
createChartControl(htmlDiv1, returned_array)
}
})
}
Basically you send any data you want to myquery.php in the any_var, retrieve that value in myquery.php with the $_POST['any_var'], run your query, then json_encode the array you want to be passed back to your javascript, and finally parse your returned data in the success function to be a usable javascript object. Now you can do what you want with it, but in my example you can see I send that returned_array to your createChartControl() function (which needs to have an added parameter for your array.
Tada, ajax magic.
I strongly suggest to you to use jQuery library on JS side. ( http://jquery.com/ )
1 - Without Ajax:(If your data will be available when the page is loaded):
<script type="text/javascript" language="JavaScript">
var myData = <?php echo json_encode($myArray); ?>;
function createChartControl(htmlDiv1)
{
// your code to draw chart
// read myData a fill the chart
}
(function(){
createChartControl('schedule');
})();
</script>
2 - With ajax (using jQuery):
function loadMyData(){
$.getJSON('ajax/myquery.php', function(data) {
var items = [];
$.each(data, function(key, val) {
items.push(val);
});
$('<ul/>', {
'class': 'my-new-list',
html: items.join('')
}).appendTo('body');
});
}
Useful sites:
http://php.net/manual/pt_BR/function.json-encode.php
http://api.jquery.com/jQuery.getJSON/
Parse JSON in JavaScript?
I have got site with dynamic refreshing divs.
Source:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.0/jquery.min.js"></script>
<script>
var auto_refresh = setInterval(
function()
{
$('#loaddiv').fadeOut('slow').load('boo.php').fadeIn("slow");
$('#loaddiv2').fadeOut('slow').load('boo2.php').fadeIn("slow");
}, 1000);
</script>
But I want fadeout and fadein only if boo.php return different(updated) value than actuall div. How compare new and actuall value and do this?
P.s Sorry for bad English but I'm Polish
You'll need to write a callback function that inspects the returned data and compares it to what's stored within the div already. Additionally, the functions that show/reveal the div will probably need to be moved to the callback function as well.
Documentation is available here.
You'd have to write an Ajax function to boo.php and compare the result with the div's value
$.ajax(
{
url: "boo.php",
success: function(result)
{
if($("#loaddiv").html() != result)
{
$("#loaddiv").fadeOut("slow")
$("#loaddiv").html(result);
$("#loaddiv").fadeIn("slow");
}
}
});
You need to check the result you are getting from the ajax call and compare it with the current content. Assuming you have an element with ID MsgCount in your Ajax response and current Div Markup and you are using the value of that to compare, the below code will work
$(function() {
var auto_refresh = setInterval(function(){
var currentMsgCount= $('#MsgCount').text();
$.get("boo.php",function(data){
var resultData=$(data);
var newMsgCount= resultData.filter('#MsgCount').text();
if(newMsgCount!=currentMsgCount)
{
//content is different. Let's show it
$('#loaddiv').fadeOut('slow',function(){
$('#loaddiv').html(data).fadeIn("slow");
});
}
});
}, 1000);
});
I have a multi level select chain, where by the value of the first select generates the options for the next select list. And within the second list some of the values will cause a div to display with another input.
My codes (below) seem to work just fine when tested on static content (ie: the second select is hard coded in the html). But when I add it with JQuery, the second level no longer triggers the .change function.
<script type="text/javascript">
$(document).ready(function() {
$dts = $("select[name='tourdes']");
$dts.change(function() {
var dtsValue = $(this).val();
var dtsString = '?tourdes=' + dtsValue;
$('#dateSelect').show();
$('#dateSelect').load('include/avdates.php' + dtsString).append();
});
});
</script>
<script type="text/javascript">
$(document).ready(function() {
$tags = $("select[name='tourcode']");
$tags.change(function() {
if ($(this).val() == "private") {
$(".prvcal").css({"visibility":"visible"});
}
});
});
</script>
I am guessing something needs to be re-initialized, but I am getting no where with my experiments.
If you're using jQuery 1.7 you'll want to use on, as both live and delegate are deprecated.
$(document).on("change", "select[name='tourcode']", function() {
var dtsValue = $(this).val();
var dtsString = '?tourdes=' + dtsValue;
$('#dateSelect').show();
$('#dateSelect').load('include/avdates.php' + dtsString).append();
});
docs for on()
You are probably using dynamically-generated HTML elements. If that is the case, you need to use .delegate() to handle them:
$('select').delegate("[name='tourdes']", 'change', function() {
I have the following function. When I click the first time, it returns a random number, but all subsequent clicks always return the same number. How come it doesn't refresh?
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#btn-get-random-image').click(function () {
$('#my-img').attr('src', '<?php echo $pics[array_rand($pics, 1)]; ?>');
});
});
</script>
It's because you're using PHP to generate the random number, and it can't possibly be refreshed across calls to the JS function -- it's embedded in the HTML by that point.
May be you can also use live like instead of click
$(document).ready(function(){
$('#btn-get-random-image').live("click", function () {
// your works here
}
});
also check out jquery live
As others have said, you are using PHP, which is executed once on the server and sent as raw output, so the image will not change. Try this!
Edit: modified code to make it suck less.
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
var myPics = <?php echo json_encode($pics); ?>;
$(document).ready(function() {
$('#btn-get-random-image').click(function () {
var index;
do {
index = Math.floor(Math.random() * myPics.length);
} while ( typeof myPics[index] == 'undefined' );
$('#my-img')
.attr('src', myPics[index]);
});
});
</script>
This uses PHP's JSON encoder to dump your array to the javascript, then your function randomly selects an image from that array to display. The do/while loop might not be necessary, my testing shows a pretty good near-uniform distribution over thousands of iterations, but there it is nonetheless.
Your PHP is creating JS code, which gets sent to the browser once when the page is rendered. Each call to the JS function runs the function as it existed when the page was rendered.
php sends html strings to html via ajax wrapped in <p class="select"></p> tags, css reads class perfectly. javascript/jquery does not. javascript/jquery wont even parse <p onclick="function()"></p>. What am i doing wrong?
heres my php (sends data via ajax fine)
echo "<p class='select' onclick='populate();' >{$row['song_name']} </p>";
heres my css (works fine)
p.select{color:#fff;padding: 5px;margin:0}
p.select:hover{color:#fff;background:#f60;cursor:pointer;}
heres my javascript
method 1 jquery.
$("p .select").click(function(){
var str = $(this).val();
alert(str);
});
method 2 onclick function.
function populate()
{
alert('here')
}
neither of the two methods respond at all. Guru why is this?
$("p .select").live ( "click" , function(){
var str = $(this).text();
alert(str);
});
See
Events/live
Binds a handler to an event (like
click) for all current - and future -
matched element.
Two things:
p .select will choose <p> tags containing an element with class select. p.select selects <p class="select">.
Why not move the populate function to within the live? I suspect the jquery live (or click) removes any explicit handlers.
Try this:
$("p.select").live("click",function()
{
var str = $(this).text();
alert(str);
populate();
});
I posted a working(in Firefox) example below. I think you forgot to put the jquery method inside the onload event. Beside the other (small) bugs...
<html>
<head>
<style>
p.select{color:#fff;padding: 5px;margin:0}
p.select:hover{color:#fff;background:#f60;cursor:pointer;}
</style>
<script src="jquery-1.3.2.min(2).js" type="text/javascript"></script>
<script type="text/javascript">
function bodyOnLoad() {
//instead of "p .select" "p.select"
$("p.select").click(
function(){
//changed val() into text()
var str = $(this).text();
alert(str);
});
}
</script>
</head>
<body onload="bodyOnLoad()">
<p class='select'>Songname</p>
</body>
</html>