I have jQuery on my webpage.
I am changing background color of a div.
Its not working.
<script type="text/javascript">
$("#gridbox").css({'background-color':'black'});
</script>
Your code should work, try using document ready handler.
$(document).ready(function(){
$("#gridbox").css({'background-color':'black'});
})
http://jsfiddle.net/WcQse/
Its possible your script is running before the DOM has loaded. Try:
<script type="text/javascript">
$(document).ready(function(){
$("#gridbox").css({'background-color':'black'});
});
</script>
-- Demo --
Try this
If you are using ASP.NET then your Client ID might change depending on the use of Master Pages in that case you can try something like this.
$('#<%= gridbox.ClientID %>' ).css('background-color','black');
If it is just a div then you should wrap it in document.ready() method
$(document).ready(function(){
$('#gridbox').css('background-color','black');
});
Demo
The same code that you are using is working fine for me
<html>
<head>
<script src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
</head>
<body>
<div id="gridbox" style="background-color:red;">gridbox</div>
<script type="text/javascript">
$("#gridbox").css({'background-color':'black'});
</script>
</body>
</html>
so you should first include the jquery library, then put the javascript file after the div that you want to change the background color.
Try:
$("#gridbox").css("background-color", "black");
Edit:
Add a document ready function, this will execute the css change after the DOM has loaded.
$(document).ready(function() {
$("#gridbox").css("background-color", "black");
});
Note: Ensure you have the jQuery JavaScript file referenced in the page.
Related
JSFiddle demo: https://jsfiddle.net/cr33q8v7/
$("#findMyWeather").click(function() {
alert("button clicked");
});
All I'm trying to verify is if the JQuery is working and I'm not getting any pop-up that says button clicked, so it would appear the syntax is wrong, but I've checked it multiple times and it looks right.
So if I include the library on JSFiddle, then why does the below code in the HTML file not run, as it appears the function is identical and these pointers both direct to the library:
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script>
$("#findMyWeather").click(function() {
alert("button clicked");
});
</script>
So the // pointers didn't reference (this is what the teacher instructed). When I changed to `https:``, then it functioned correctly:
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
I need another set of eyes, or else I'm missing something else and just don't see it.
You need to include the jQuery library in JSFiddle.
Click the gear that says Javascript and choose the version of jQuery that suits you.
Your fiddle doesn't actually include jQuery via a script tag.
e.g. add: <script src="https://code.jquery.com/jquery-3.1.0.min.js"></script> to your HMTL
you must add below line after last div between body tag :
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4
/jquery.min.js"></script>
Here is Demo
Add the cdn link for Jquery. Without jquery it will not work. You can add it to the before end of body tag.
Add:<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
use jquery online by adding <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>.
<html>
<head></head>
<title></title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<body>
<button id="check">Click on me to check if jquery is working ....!</button>
</body>
<script type="text/javascript">
$("#check").click(function(){
alert("yep, jquery is working");
});
</script>
</html>
every thing looks fine please select jquery in fiddle then try it
and please add this script code in your file
< script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js" ></script>
I have the next code. What am trying to do is when i refresh or open the page, to add the class intro. But my main problem is in the part :
$("body").load(function(){
I want when the page is opened, then to add the class .intro. Instead of body, i have also tried html, and still doesn't work.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("body").load(function(){
$("p").addClass("intro");
});
});
</script>
<style>
.intro {
background-color:green;
}
</style>
</head>
<body>
<img src="https://k32.kn3.net/taringa/1/9/3/9/4/7/32/johnny_te_toco/330x330_248.gif" width="304" height="236">
<p><b>Note:</b> Depending on the browser, the load event may not trigger if the image is cached.</p>
</body>
</html>
You should not use load() for this purpose.
load() function description : Load data from the server and place the returned HTML into the matched element.
You need just ready function to achieve that :
$(document).ready(function(){
$("p").addClass("intro");
});
//OR
jQuery(function($){
$("p").addClass("intro");
});
Hope this helps.
Try this instead:
$(document).ready(function(){
$(window).load(function(){
$("p").addClass("intro");
});
});
Load event attached to the window. If that is what you meant? Load on a DOM element like that doesn't make much sense.
Whilst this should work, you could pull it out of your ready() event.
$(document).ready(function(){
// Nothing to see here...
});
$(window).load(function(){
$("p").addClass("intro");
});
This waits for the load of the window, but if you just want to add the class as soon as possible when the DOM is ready, well, you won't need the load() at all:
$(document).ready(function(){
$("p").addClass("intro");
});
Bonus: You should use on() to attach all events going forward.
$(window).on('load', function(){
$("p").addClass("intro");
});
on() is the preferred method for events in future jQuery versions, as older methods are deprecated.
All the best.
Put your code inside $(document).ready callback.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("p").addClass("intro");
});
</script>
<style>
.intro {
background-color:green;
}
</style>
</head>
<body>
<img src="https://k32.kn3.net/taringa/1/9/3/9/4/7/32/johnny_te_toco/330x330_248.gif" width="304" height="236">
<p><b>Note:</b> Depending on the browser, the load event may not trigger if the image is cached.</p>
</body>
</html>
$(window).on('load', function(){
$("p").addClass("intro");
});
Hello guys I want to dynamically append the div to the div that i click. Here is the code
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<script src="query.js">
$('.hello').click(function(){
$(this).append('<div>I am the new one</div>');
});
</script>
</head>
<body>
<div class="hello1">Hello guys</div>
<div class="hello2">Hiiiiiiii</div>
<div class="hello3">Awesome</div>
</body>
</html>
Can anyone tell me whats the issue with my code
There are 3 problems in your code
You can't have src and contents for an script tag
Since your script is placed before the elements are loaded, you need to put your script in a dom ready handler
There is no class called hello in your html
so
<div class="hello">Hello guys</div>
<div class="hello">Hiiiiiiii</div>
<div class="hello">Awesome</div>
<script src="query.js"></script>
<script>
jQuery(function ($) {
$('.hello').click(function () {
$(this).append('<div>I am the new one</div>');
});
})
</script>
Try wrap your jquery code in document.ready like
$(document).ready(function(){ // this will execute when DOM is ready
//your code
$('.hello1').click(function(){ //updated class name
$(this).append('<div>I am the new one</div>');
});
})
As i can see you are using hello class to bind click event your it
doesn't present in your HTML. So if you want to attach event to all
class start with hello use this:
$(document).ready(function(){
$('div[class^="hello"]').click(function(){
$(this).append('<div>I am the new one</div>');
});
});
DEMO
Instead of this
<script src="query.js"> //don't use src here
Use:
<script type="text/javascript">
Try this : You don't have div with class="hello" but class which starts with hello viz hello1, hello2, hello3. Hence use start with selector as shown below. Also put your code inside $(document).ready(function... or $(function(){... so that it will ensure DOM is ready and will attach click event handler.
You must include jquery library first and then put jquery script in another script tag.
<script src="query.js"></script>
<script>
$(function(){
$('div[class^="hello"]').click(function(){
$(this).append('<div>I am the new one</div>');
});
});
</script>
You need to include jQuery before and for using it. Use
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
You cannot load script and define script inside it. So, following is not valid
<script src="query.js">$('.hello')...</script>
Use ready() or DOMContentLoaded event or move the script to the bottom of <body>
There is no element with hello class in the markup, but you're binding the event on it.
Code:
<script src="query.js"></script>
<script>
$(document).ready(function() {
$('.hello').click(function() {
$(this).append('<div>I am the new one</div>');
});
});
</script>
Demo
$(document).ready(function() {
$('.hello').click(function() {
$(this).append('<div>I am the new one</div>');
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js"></script>
<div class="hello">Hello guys</div>
<div class="hello">Hiiiiiiii</div>
<div class="hello">Awesome</div>
First of all, in order to use $() selectors you need to include a proper version of jquery. Then, you need to select an element: you have any element with hello class, instead, you have hello1, hello2, and hello3. You could remove the numbers, so all of them will have a hello class. And finally, because these elements doesn't exist when the js code is executed, you need to wrap your code within a document ready event, or move it to the end of your html body tag. Good luck!
There is no .hello class in your code, you use hello1, hello2 and hello3 as classnames, they should all just be hello.
Code:
<script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script>
<script type="text/javascript">
$("#clicker").click(function () {
alert("Hello!");
$(".hide_div").hide();
});
</script>
The above code doesn't work. When I click on #clicker, it doesn't alert and and it doesn't hide. I checked the console and I get no errors. I also checked to see if JQuery was loading and indeed it is. So not sure what the issue is. I also did a document ready function with an alert and that worked so not sure what I am doing wrong. Please help. Thanks!
You are supposed to add the javascript code in a $(document).ready(function() {}); block.
i.e.
$(document).ready(function() {
$("#clicker").click(function () {
alert("Hello!");
$(".hide_div").hide();
});
});
As jQuery documentation states: "A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside $( document ).ready() will only run once the page Document Object Model (DOM) is ready for JavaScript code to execute"
I found the best solution for this problem by using ON with $(document).
$(document).on('click', '#yourid', function() { alert("hello"); });
for id start with see below:
$(document).on('click', 'div[id^="start"]', function() {
alert ('hello'); });
finally after 1 week I not need to add onclick triger.
I hope this will help many people
Your code may work without document.ready() just be sure that your script is after the #clicker. Checkout this demo: http://jsbin.com/aPAsaZo/1/
The idea in the ready concept. If you sure that your script is the latest thing in your page or it is after the affected element, it will work.
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>JS Bin</title>
</head>
<body>
<script src="https://code.jquery.com/jquery-latest.min.js"
type="text/javascript"></script>
<a href="#" id="clicker" value="Click Me!" >Click Me</a>
<script type="text/javascript">
$("#clicker").click(function () {
alert("Hello!");
$(".hide_div").hide();
});
</script>
</body>
</html>
Notice:
In the jsbin demo replace http with https there in the code, or use this variant Demo
Try adding $(document).ready(function(){ to the beginning of your script, and then });. Also, does the div have the id in it properly, i.e., as an id, not a class, etc.?
You have to wrap your Javascript-Code with $(document).ready(function(){});Look this JSfiddle.
JS Code:
$(document).ready(function() {
$("#clicker").click(function () {
alert("Hello!");
$(".hide_div").hide();
});
});
Be sure there is nothing on your button (such a div or a trasparent img) that keeps from clicking the button.
It sounds stupid, but sometimes we think that jQuery is not working and all that stuffs and the problem is on the positioning of DOM elements.
You can use $(function(){ // code }); which is executed when the document is ready to execute the code inside that block.
$(function(){
$('#clicker').click(function(){
alert('hey');
$('.hide_div').hide();
});
});
Just a quick check, if you are using client-side templating engine such as handlebars, your js will load after document.ready, hence there will be no element to bind the event to, therefore either use onclick handler or use it on the body and check for current target
Proper Browser Reload
Just a quick check as well if you keep your js files separately: make sure to reload your resources properly. Browsers will usually cache files, so just assure that i.e. a former typo is corrected in your loaded resources.
See this answer for permanent cache disabling in Chrome/Chromium. Otherwise you can generally force a full reload with Ctrl+F5 or Shift+F5 as mentioned in this answer.
How to add a class to first div using jQuery.
I Tried following code but doesn't work for me.
maybe I'm missing something.
<html>
<head>
<script src="http://code.jquery.com/jquery-1.8.2.js" type="text/javascript"></script>
<script>
$('.item')
.eq(0).addClass('first').end()
.eq(-1).addClass('last').end();
</script>
<style type="text/css">
.first, .last{
background-color:#0099FF;
}
</style>
</head>
<body>
<div class="item">aaa</div>
<div class="item">bbb</div>
<div class="item">ccc</div>
<div class="item">ddd</div>
<div class="item">eee</div>
</body>
</html>
Edit: Thanks to everyone, is there anyway to add a class to rest of DIVs?
You are executing the code before the markup is ready. Wrap the code in
// document ready short-style
$(function() {
});
try
$(document).ready(function() {
$('.item:first-child').addClass('first');
});
Your code is correct, but it's executed before the DOM is ready, please move the <script></script> to the last line before </body>.
To add a class to the rest of the elements you can do this (from VisioN's comment)
$(".item:not(:first,:last)").addClass("differentClass");
$(".item :first").addClass('first');
u use this code
$(function(){
$(".item:first-child").addClass("anyclass");
})
or
$("div:first-child").addClass("anyclass");
your code should execute when the DOM is fully loaded. So use $(document).ready().
the script can be run as soon as the DOM hierarchy has been fully
constructed. The handler passed to .ready() is guaranteed to be
executed after the DOM is ready, so this is usually the best place to
attach all other event handlers and run other jQuery code.
Read more about $(document).ready().
check the code below. It will help you to get done what you want.
$(document).ready(function() {
$('.item').first().addClass('first');
});
Otherwise your js is ran even before the DOM is loaded
$(".item:first").addClass('first'); will work fine too.
Try the demo too.
Hope this will help you out. If you have any questions please don't hesitate to ask. Thanks
Here is the jQuery code
<script>
$(document).ready(function(){
$('body .item:first').addClass('YOUR CLASS VALUE');
});
<script>
Regards,
http://www.santoshkori.com
see jsfiddle here
$(document).ready(function() {
$('div:first').addClass('first');
});
You could always use straight CSS, although it is CSS3. E.g. you could replace your curre t CSS with:
.item:nth-of-type(1), .item:nth-of-type(3)
{
background-color:#0099FF;
}
If you do just want jQuery then you could try:
$('.item:first').addClass('first');
$('.item:last').addClass('last');
Try this
JS CODE
$(document).ready(function(){
$('div.item')
.eq(0).addClass('first').end()
.eq(-1).addClass('last').end();
});
DEMO
Note
you need to use $(function() { ... }) to wrap whole jQuery code.