Call a javascript function after loading the Div - javascript

How to call the javascript function, after loading the particular div?

Typically, JavaScript execution is deferred till after the entire document is loaded by using the window.onload event.
window.onload = function() {
// Do stuff
};
Otherwise, if you don't want to or if you have no need to wait for the entire document to load, you can include your JavaScript directly after the closing tag of the element (div) which you are concerned with.
<div>
...
</div>
<script src="blah-blah-blah.js"></script>

I'd check if div exists in DOM like this :
javascript
if(document.getElementById('myDiv'))
or jQuery
if($("#myDiv"))

Related

how can fire event after end loading nested html page (page in object )

i want hide object after html page end loading not the man html tag
this is my code
$('<div id="content" ><object data="../06.html"></div>').appendTo('section')
i try use load but return after div loading i don't want this
With jQuery, you can start some action after the DOM is loaded. The content (e.g. images) isn't necessarily already there, but you can manipulate every DOM element after the DOM is ready. Use the following snippet for that:
$(document).ready(function() {
//some code
});
If you want to wait until the page is fully loaded (e.g. also images), you can use window.onload:
window.onload = function() {
//some code
};
To hide a <div> when your webpage is fully loaded:
$(window).load(function () {
$('div').fadeOut(); //or .hide()
});
To show a div when the page is fully loaded:
$(window).load(function (){
$('div').fadeIn(); //or show()
});
If that's not what you're looking for, then please do explain more about your problem.

Run JS code when all HTML has loaded (not images)

I want to execute a js code which adds a class to all elements that have specific class eg. .lookbook-block however, I think I'd have to wait until all the HTML has loaded before this loop is executed, but the page had a lot of images so I don't want to use window.load ad that will wait until all images have loaded, which will delay the execution. Is there a way I can wait until only the HTML has loaded?
Thanks!
Put script at the bottom of the html
$(function() {
// Your code here.
});
This adds a callback function to execute when the ready event is triggered from the jQuery library. You can read more about it here. You can do the same thing by using this, which is more clear:
$(document).ready(function() {
// Your code
});

Which event I have to use in jquery to get called before my page elements load?

I want to use boomrang framework in Jquery to get the bandwidth of the user's network which has to be displayed on the screen as "connection : fair/poor/good".
With on ready,on load, etc.., javascript function will be called only after the elements are ready to be accessed. But, I want the boomrang call to be called quite before that. Please tell me which event I have to use so that function call can happen before the elements of the page loads. Thanks in advance.<>
Note: I have tried by putting script tag at the top of the head tag. But still page elements are getting evaluated first (along with their el expressions).
If you want your function to be called before DOM creation then you dont need to call your function in any onload or on(document).ready, what you have to do is just call your function inside the script tag
For example (Script on the top of the page)
<script>
function abc()
{
// function desc
}
abc(); //Will be called as soon as the url is opened
$(document).ready(function()
{
abc(); // will be called when the DOM is ready
});
</script>
Use bw plugin from boomrang freamework
http://yahoo.github.io/boomerang/doc/howtos/howto-3.html

load javascript after the html has rendered

The below script works perfectly fine if the p tag is placed above and script placed below
<p id="dom_intro">Hello</p>
<script>
x=document.getElementById("dom_intro");
document.write("<p>This is the text of dom intro" + x.innerHTML + "Howzzat </p>");
</script>
If the same code where the script is placed first and html p tag is placed below the script it does not work, I am getting error x is null or undefined
<script>
x=document.getElementById("dom_intro");
document.write("<p>This is the text of dom intro" + x.innerHTML + "Howzzat </p>");
</script>
<p id="dom_intro">Hello</p>
I tried pasting the script in external javascript file and placed at the head section
I am getting the same error. Is there any javascript or jquery script to load the javascript file after the html has rendred
jquery:
$(document).ready(){function(){
//yourcode
});
And Javascript
window.onload=function(){
//your code
}
The document ready in jquery executes the function when the DOM is ready, that means before some images are downloaded.
Window.onload is fired when page is completely ready, that is when all images are finished loading.
you need to access the element once the dom is ready. you are getting this error because your trying to access the p tag before the dom getting loaded.
this may fix your problem
window.onload = function(){
// your javascript here
x=document.getElementById("dom_intro");
document.write("<p>This is the text of dom intro" + x.innerHTML + "Howzzat </p>");
}
Browsers are rendering your code as they see it (lineary). The here problem is that your script tries to access something that doesn't exists yet so it's common practice to wait until all DOM elements are ready and then execute script.
Please look here: http://api.jquery.com/ready/
$(document).ready(function() {
// Handler for .ready() called.
});
Which is equivalent to calling:
$(function() {
// Handler for .ready() called.
});
The <script> content is executed where you place it, so in the second case, you are trying to use "dom_intro" before it is declared. But you're trying to load the javascript AFTER the html has rendered, so you don't want to write the script BEFORE the html content, right?
The usual way to load JS files are just before the </body> close tag. That way you'll be sure that any html won't be downloaded before all your HTML is loaded.
And if you want to wait for the HTML to finish loading before executing any JS, you must do something like this:
Plain javascript:
window.onload = function () {
// do_whatever_you_want
}
Jquery:
$(document).ready(function() {
// do_whatever_you_want
}

Difference between onload() and $.ready?

Can you list the difference between onload() and $(document).ready(function(){..}) functions in the using jQuery?
the load event (a.k.a "onload") on the window and/or body element will fire once all the content of the page has been loaded -- this includes all images, scripts, etc... everything.
In contrast, jquery's $(document).ready(...) function will use a browser-specific mechanism to ensure that your handler is called as soon as possible after the HTML/XML dom is loaded and accessible. This is the earliest point in the page load process where you can safely run script that intends to access elements in the page's html dom. This point arrives earlier (often much earlier) than the final load event, because of the additional time required to load secondary resources (like images, and such).
The main differences between the two are:
Body.Onload() event will be called only after the DOM and associated resources like images got loaded, but jQuery's document.ready() event will be called once the DOM is loaded i.e., it wont wait for the resources like images to get loaded. Hence, the functions in jQuery's ready event will get executed once the HTML structure is loaded without waiting for the resources.
We can have multiple document.ready() in a page but Body.Onload() event cannot.
Document.ready() function triggers as soon as HTML DOM loaded. But the onload() function will trigger after HTML DOM, all the body content like images loaded.
body.onload() cares about both HTML structure and assoicated resources where as document.ready() cares only about the HTML structure.
onload() fires when all the content (everything) on the targeted eleement is fully loaded like CSS, images etc.
$.ready indicates that code in it need to be executed once the targeted elements content loaded and ready to be manipulated by script. It won't wait for the images to load for executing the jQuery script.
.
Ex(body onload):
<body onload="loadBody()">
<script>
function myFunction() {
alert("Page is loaded");
}
</script>
</body
Ex(onload on an element):
<img src="w3html.gif" onload="loadImg()" width="100" height="132">
<script>
function loadImg() {
alert("Image is loaded");
}
</script>
Ex3 ($.ready):
<script type = "text/javascript">
$(document).ready(function() {
alert("$(document).ready fired");
});
</script>
Onload take care about DOM and resources: it checks if images are loaded, script are ready to run and much more.
$.ready simply check if we have read the full DOM of the page.
Please check out this link for more explain and example: http://dailygit.com/difference-between-document-ready-and-window-load-in-jquery/

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