I am trying to make a very simple coding example work, but for an unknown reason, it is not responding.
The example I am trying to replicate is found here: http://jsfiddle.net/karim79/2hw89/1/
It is an answer to the following SO question: Toggle visibility of text box based on status of check box -jQuery
Here is my code. I have embedded another checkbox, to test if I could call a basic onclick-listener-function. It works. The other checkbox is however not reacting when clicked, even though the exact same code works in the example. Do you know why?
<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js">
$(document).ready(function() {
$('#other').change(function() {
alert("Hello World!");
$('#otherrace').toggle(this.checked).focus();
});
});
</script>
<script>
function test(){
alert("Test is working!");
}
</script>
</head>
<body>
<input type="checkbox" name="race" value="other" id="other">Other,
Specify
<br />
<input style="display: none;" type="text" size="25" maxlength="25"
id="otherrace" />
<br />
<input type="checkbox" onclick="test()" name="test" value="test"
id="test">testing
<br />
</body>
</html>
script element cannot have both src and body
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<!--or use the address as http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js-->
<script>
$(document).ready(function() {
$('#other').change(function() {
alert("Hello World!");
$('#otherrace').toggle(this.checked).focus();
});
});
</script>
Script.src
This attribute specifies the URI of an external script; this can be
used as an alternative to embedding a script directly within a
document. script elements with an src attribute specified should not
have a script embedded within its tags.
Also, if you are loading the page from a local files system, using a protocol like file://.... then you need to specify the http protocol in the jQuery url like <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
Use
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
Related
This question has been asked a lot it seems on Stack Overflow but none of the solutions seem to be working. I am developing a web application where I have to fill in data in data fields on page load. Here is my code:
<!DOCTYPE html>
<html>
<body>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<input type="text" id="datetime" value="" />
<script type="text/javascript">
$(document).on("pageload",function(){
//for fill field
document.getElementById("datetime").value = "here is value";
});
</script>
</body>
</html>
For some reason, when I load the page, no data gets filled in, does anyone see the reason for it?
You don't need jQuery. Try this:
<!DOCTYPE html>
<html>
<body>
<input type="text" id="datetime" value="" />
<script>
window.onload = function() {
document.getElementById('datetime').value = 'here is value';
};
</script>
</body>
</html>
What version of jquery are you using? Looks like pageload might deprecated and you should use pagecontainerload
Or better yet use the $(document).ready or .load methods?
In Jquery it's called document ready event... So use the below syntax.
$(document).ready(function(){
//for fill field
$("#datetime").val( "here is value");
});
Note the inner line of code has been changed.. This is the Jquery way of doing the same thing...
You can also use this Shorthand to $(document).ready(function(){
That is $(function(){
Test scenario:
Type "hello" in the textbox, you should see "hello" written in the page
Now click the "test" link (it's just a link to itself with a query string &test=1)
Now type "world" in the textbox, you can see that it doesn't get written in the page anymore.
Why is this happening?
You can test this page on a .php page:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css" />
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>
<body>
<form id="search_form" method="post">
<label for="search">Search:</label>
<input type="search" id="search" />
</form>
<script type="text/javascript">
$('#search_form').submit(function (event) {
window.location.href = '<?=$_SERVER['PHP_SELF'].'?s='?>' + $('#search').val();
event.preventDefault();
});
</script>
<br /><br />
<?php $s = filter_input(INPUT_GET, 's'); ?>
Query string: <?=$s?>
<br /><br />
test
</body>
</html>
Demo URL: (removed after problem solved)
Since you are using Jquery Mobile, all links are executed via AJAX by default. This will confuse this script of yours. I would suggest suppressing this in the link.
test
This will allow the link to be treated like normal and will execute the URL without AJAX.
My HTML file:
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" />
<script src="script.js" type="text/javascript"></script>
</head>
<body>
<form name="someForm">
<input type="button" value="Click me" onClick="myFunction()" />
</form>
<div id="result"></div>
</body>
</html>
My script.js file:
function myFunction(){
$("#result").html("BUTTON WORKS");
}
I have Firebug, and whenever I click the button, Firebug throws me this error:
ReferenceError: myFunction is not defined
What am I doing wrong?
script can't be a self closing tag in HTML (it works on some browsers, depending on the doctype, but it's not correct). You must add a closing tag.
Replace
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" />
with
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
The script element pointing to your script probably isn't parsed correctly due to this error.
From the norm :
A script element must have both a start tag and an end tag.
Blockquote
Might be due to file reference issue.
It is a better practice to attach the event in the js file instead of HTML.
<form name="someForm">
<input type="button" id="btn" value="Click me" />
</form>
$('#btn').on('click', function(){
$("#result").html("BUTTON WORKS");
});
Do you open that file locally (you have file:// in address bar) or from some server (http:// protocol in address bar)? Because if you open file locally, you actually try to load jquery from address:
file://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
which is incorrect. It happens, because you use //ajax.googleapis.com/... as adress, which refers the same protocol as currently opened page.
Either change it to:
http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js
of upload your file to some server (or even install one locally) and test it through full http request.
I solved the problem by combining answers from #Susbanth, #MBO, and #dystroy.
Here's my new HTML file:
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="script.js" type="text/javascript"></script>
</head>
<body>
<form name="someForm">
<input type="button" value="Click me" />
</form>
<div id="result"></div>
</body>
</html>
I added "http" to the jQuery source, closed the tag, and removed the 'onClick' from inside the HTML.
Here's the updated script.js file:
$(document).ready(function(){
$("input[type=button]").on("click",function(){
$("div#result").html("BUTTON WORK");
});
});
I made the onClick event a jQuery event.
The following code should pop up an alert box whenever I select a file or make a change to the textbox and click out of it.
I believe the code SHOULD work, but it doesn't. Isolating the code snippets on JSFiddle and running them even works.
Is anything wrong with my code? If not, could something on my computer be preventing this code from working?
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<script>
$(document).ready(function() {
document.getElementById("file").onchange(function() {
alert($(this).val());
});
$('#text').change(function() {
alert($(this).val());
});
});
</script>
</head>
<body>
<input id="file" type="file" name="file" />
<input id="text" type="text" name="text" />
</body>
</html>
Try wrapping your function in
$(document).ready(function() {
});
jsfiddle does this for you (I think)
Alternatively use:
$(window).ready(function() {
});
if you want to ensure that the entire page has loaded before trying to run your code.
Further reading:
http://docs.jquery.com/Tutorials:Introducing_$(document).ready()
So I have a very simple code with form and one button
with jQuery I want to bind some actions when user clicks on that button, but some reason it's not working
Here is the code
<!DOCTYPE html>
<html>
<head>
<script src="jquery.js"></script>
</head>
<body>
<script>
$('#jallerysubmit').bind('click', function() {
alert('asd');
})
</script>
<form>
<input type="checkbox" name="box1">box1<br>
<input type="checkbox" name="box1">box2<br>
<input type="button" id="jallerysubmit" value="Proved">
</form>
</body>
</html>
please suggest what's wrong with this code as it does not work, even it does not produce any error
You need to wrap it in a document ready handler.
<script>
$(function() {
$('#jallerysubmit').bind('click', function() {
alert('asd');
});
});
</script>
Docs: http://api.jquery.com/ready/
The JavaScript code will be executed before the DOM is loaded, so the element with ID jallerysubmit cannot be found (it does not exists yet).
#sje397 described a very common way (at least when using jQuery) how to solve this. Another way is to put the script at the end of the document:
<html>
<head>
<script src="jquery.js"></script>
</head>
<body>
<form>
<input type="checkbox" name="box1">box1<br>
<input type="checkbox" name="box1">box2<br>
<input type="button" id="jallerysubmit" value="Proved">
</form>
<script>
$('#jallerysubmit').bind('click', function() {
alert('asd');
});
</script>
</body>
</html>
Your code attaching the handler is being executed before the element exists in the DOM, therefore the selector returns nothing and the handler is not applied. Put the code inside a document ready handler and it should work. You could also simplify by using the click shortcut.
<script>
$(function() {
$('#jallerysubmit').click(function() {
alert('asd');
});
});
</script>
Include an alert("hello"); right after to make sure the jQuery is working right. Then add a return false to the end of your submit handle to make sure your page doesnt reload when the button is clicked, also use document.ready. See code below
<!DOCTYPE html>
<html>
<head>
<script src="jquery.js"></script>
</head>
<body>
<script>
$(document).ready(function(){
alert("hello");
$('#jallerysubmit').bind('click', function() {
alert('asd');
return false;
});
});
</script>
<form>
<input type="checkbox" name="box1">box1<br>
<input type="checkbox" name="box1">box2<br>
<input type="button" id="jallerysubmit" value="Proved">
</form>
</body>
</html>
Best practice is using an external .js file, example script.js:
$(document).ready(function() {
yourFunction();
});
function yourFunction() {
$('#jallerysubmit').click(function() {
alert('asd');
});
}
and import it in your html file in the tag head:
<script type="text/javascript" src="script.js"></script>
Always use jquery function within
(document).ready(function(){//ur jquery codes});
or
$().ready(function(){//ur jquery codes});
or
$.noConflict();
jQuery(document).ready(function($){//ur codes});
Once DOM of page is loaded above ready function is initiated. so i recommend jquery lovers to write their magic codes always within this code