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Closed 10 years ago.
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Javascript that executes after page load
how to call a javascript method as soon as page is loaded.
i have a java script which needs to be called soon after the jsp page is loaded, how to achieve this in javascript.
could any one of you help me pelase.
Regards
You can write a code snippet something like this :-
window.onload(function(){
//Your JavaScript here
});
And if using JQuery then
document.ready(function(){
//Your JavaScript Here
});
Or you can have all your JS after all the HTML.
you can even use a function called :--
document.onload(function(){
//Your code Here
});
Last but not the least you could even try out this
<body onload="YourJSMethod();">
<!-- Some html content -->
</body>
you can try
<body onload="someMethod();">
<!-- Some html content -->
</body>
This will call your method as soon as body tag of your page is loaded.
Alternatively you can make use of jquery's document ready function.
$(document).ready(function() {
// your code
});
Related
This question already has answers here:
How to include jQuery dynamically in any website using pure javascript
(9 answers)
Closed 25 days ago.
How do I continue executing my .js code after programmatically adding jQuery to the DOM?
The 3rd answer in this post shows how to add jquery to the dom but how should you continue executing further code?
For example you can't just add code underneath the self invoked function because jQuery hasn't yet loaded. How do I continue writing my .js code so that it executes?
$(window).on('load', function() {
// jQuery hasn't yet loaded so can't use this yet.
});
Execute the code that requires jQuery in the script's load event listener.
var jQueryScript = document.createElement('script');
jQueryScript.setAttribute('src','https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js');
jQueryScript.addEventListener("load", function() {
$(document).ready(function() {
...
});
});
document.head.appendChild(jQueryScript);
This question already has answers here:
How to run a function when the page is loaded?
(11 answers)
Closed 6 years ago.
I want to run this script on pageload or after all the elements are loaded.
JavaScript
<script type="text/javascript">
function backgroundload (){
$(".portfolio-background-color")
var color = /#[0-9\A-F]+/.exec($(this).html())[0];
$(this).css('background', color)
}
window.onload = backgroundload;
</script>
i'm new to js please check if my code is okay and is it the correct way to load the js
All Javascript runs on page load. If what you mean is that you want it to run after all the elements in the page have been initialized, there are several ways:
window.onload
document.onload
body.onload
$(document).ready
There are more in-depth explanations of the support for the first three, and the differences between them, here. Documentation for $(document).ready is here.
However, in my experience, the easiest way to ensure that a script runs after all synchronously-loaded content is simply to place the <script> element at the bottom of the <body>.
How do you access the variable from an external JavaScript within a HTML page?
In my external JavaScript file(init.js), I created a variable call:
var myMessage="Hello World";
And in my HTML page which has init.js included but when I try alerting it:
alert(myMessage);
It gives me an error.
Sample code here
your codepen sample does not include the code as an external file but internally so that is an issue, but generally you need to wait for the page and all elements to finish loading.
The example bellow will wait 1000ms or 1sec and then you'll see that the alert will show the variable.
<div>
Body content
</div>
<script>
setTimeout(function() {
alert(myMessage);
},1000);
</script>
The better way is of course to use jQuery's
$('document').ready(function(){ });
instead of a timer as you can't be sure 1 second is enough. the connection might be poor and it could take more for all the pages to load.
If you dont want to use jQuery there are vanilla JS ways to do it as well.
pure JavaScript equivalent to jQuery's $.ready() how to call a function when the page/dom is ready for it
You can call external js variable through making
var init={
myMessage="Hello World";
}
call your html code
alert(init.myMessage);
This question already has answers here:
Onclick() function on working
(4 answers)
Closed 9 years ago.
I am using the jquery tool bootstrap wizard and there is a function within it to start the wizard that I want to load up automatically when I go to a page.
Here is my code:
$('#open-wizard').click(function (e) {
e.preventDefault();
wizard.show();
});
I need to have this code run whenever I load the page. I know for functions you could just add, not sure how I do this with my code, I tried to put it in a function and didn't work.
window.onload = load();
function load() {
//javascript function here
}
when using window.onload you do not need the perenthesis. change load() to load..
function load() {
//javascript function here
}
window.onload = load;
Yes,and i suggest u put the js import tags at the bottom of the page file.
eg:
<scrpit ...
<script type="text/javascript" src="../js/bootstrap.min.js"></script>
</body>
</html>
document.ready (jQuery)
$(document).ready(function()
{
// executes when HTML-Document is loaded and DOM is ready
alert("(document).ready was called - document is ready!");
});
document.ready will execute right after the HTML document is loaded property, and the DOM is ready
window.load (Built-in JavaScript)
$(window).load(function()
{
// executes when complete page is fully loaded, including all frames, objects and images
alert("(window).load was called - window is loaded!");
});
The window.load however will wait for the page to be fully loaded, this includes inner frames, images etc.
all you need is $(document).ready();
$(document).ready(function () {
wizard.show();
});
This question already has answers here:
How to check if DOM is ready without a framework?
(7 answers)
Closed 1 year ago.
I have a requirement that states to use only plain JavaScript and not jQuery. I need to initialize some variables(using some function) as soon as the DOM is loaded and not when the page has fully loaded. In short it should not wait for the whole page to load. In jQuery it can be very easily done using document.ready() function.
Is it possible to implement it in JavaScript using any function?
a "practical" way is just placing a script block before the end of the document (even is not really equivalent to domready)
...
<script>...</script>
</body>
</html>
or use one of various pure-js implementation of DomReady event, like http://snipplr.com/view/6029/domreadyjs/
It's sometimes achieved like this
<body>
<!--
All your html tags here
....
....
-->
<script type="text/javascript">
//this should execute after the above tags and elements have rendered
</script>
</body>
You can use DOMContentLoaded event if supported:
MSDN: http://msdn.microsoft.com/en-us/library/windows/apps/hh868490.aspx
MDN: https://developer.mozilla.org/en/DOM/DOM_event_reference/DOMContentLoaded
if you realy want to wait for "ready event" you can for example use that kind of thing :
(function(w,evt,fn){
if (w.addEventListener){// W3C DOM
w.addEventListener(evt,fn,false);
}
else if (w.attachEvent) { // IE DOM
w.attachEvent("on"+evt, fn);
}
})(window,'load',function(){
// your code here
});
but it's indeed better to simply use a well placed 'script' tag as your code will probably work and start sooner