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:
$(document).ready(function() {
// Your code
});
Related
I'm working to modify some content which is dynamically loaded via another script(let's call is script #1) onto my site. Script #1 loads some markup and content and I've been using the setTimeout() function to call my script (Script #2) using a delay of a few seconds, in order to wait to be sure that Script #1 has executed and the content is present in the DOM.
My issue is that Script#1 has different loading times, based on the server load and can be slow or fast depending on these factors, and right now, playing it safe with setTimeout() I'm often left with a second or two where my scripts are still waiting to be fired and Script #1 has already loaded the content.
How can I execute my script as soon as Script#1 successfully loads it's dynamic content?
I've found this post which does seem to address the same issue but using the setInterval function as #Matt Ball has laid out there doesn't work at all for some reason. I'm using the code below where 'div.enrollment' is meant to find in the DOM which is dynamically loaded and execute..
jQuery(window).load(function ($)
{
var i = setInterval(function ()
{
if ($('div.enrollment').length)
{
clearInterval(i);
// safe to execute your code here
console.log("It's Loaded");
}
}, 100);
});
Any help on guidance on this would be greatly appreciated! Thanks for your time.
It seems that the healcode.js is doing a lot of stuff. There is a whole lot of markup added to the <healcode-widget> tag.
I would try to add another tag with an id inside and test for its existence:
<healcode-widget ....><div id="healCodeLoading"></div></healcode-widget>
Test in an interval for the existence of healCodeLoading inside <healcode-widget>: (Assuming jQuery)
var healCodeLoadingInterval = setInterval(function(){
var healCodeLoading = jQuery('healcode-widget #healCodeLoading');
if (healCodeLoading.length == 0) {
clearInterval(healCodeLoadingInterval);
// Everything should be loaded now, so you can do something here
}
}, 100);
healcode.js should replace everything inside <healcode-widget></healcode-widget> during init. So, if your <div>-element is no longer inside, the widget has loaded and initialized.
Hope that helps.
If you just want to load some markup and content and then run some script afterwards, you can use jQuery. You should use something like the following in script#1 to run a function in script#2
$.get( "ajax/test.html", function( data ) {
// Now you can do something with your data and run other script.
console.log("It's Loaded");
});
The function is called, after ajax/test.html is loaded.
Hope that helps
I'm having trouble getting my scripts to run for content that has been loaded onto the page via .load().
In particular, how do you make a script that should run on .ready work?
Sample script:
$(document).ready(function() {
$('.content').fadeIn();
});
-- It runs fine on standard pages, but won't work for .load() sections.
You have no slow variable defined. It should be a string, so:
$(document).ready(function() {
$('.content').fadeIn('slow');
});
async functions come with a callback, use that to perform operations on the content once the load is complete:
$("yourElementSelector").load("url", function() {
//load is completed, do work here
});
Your event will only run when the page is first loaded and ready, any other event such as .load() will need additional event handlers attached.
I have the following problem: on a customer's homepage the navibar is loaded by javascript, but I need to change some URL's on it. If I just start my script on $(document).ready() it runs before the customers script and has no effect. I only can use setTimeout for my function to wait until the other script is ready, but it's not good or safe at all. I can't change anything on the website, only add a javascript - is there a way to time it after the other one?
You can use repeated setTimeout, in order to check if menu is accessible.
function check_menu(){
if(document.getElementById('my_menu')==null){
setTimeout('check_menu()',500);
} else {
//do some stuff
}
}
If you have information about the menu like the id or class, use the onLoad() jQuery method on the element. For example if the code is loading asynchronously, and you add the onload to one of the last elements it should fire after the content has finished.
$.post('AsyncCodeLoad.php', function(data) {
$('#lastElementToLoad').onLoad(RunMyFunction);
});
Or if you have no chance to insert your code into the async loading just add to the bottom of the </body>:
$('#lastElementToLoad').onLoad(RunMyFunction);
Just a thought.
Yes, add your script at the bottom of the <body /> tag to ensure it does not run until all other scripts have run. This will only work however if your customer is loading the nav links synchronously.
If the nav is being loaded asynchronously, use JS's setInterval to repeatedly check the contents of the nav for links. When you determine the links have been added, cancel your interval check and call your script's logic entry point.
Cheers
Fiddle: http://jsfiddle.net/iambriansreed/xSzjA/
JavaScript
var
menu_fix = function(){
var menu = $('#menu');
if(menu.length == 0) return;
clearInterval(menu_fix_int);
$('a', menu).text('Google Search').attr('href','http://google.com');
},
menu_fix_int = setInterval(menu_fix, 100);
HTML
<div id="menu">Bing Search</div>
I have a very bare HTML page that loads two JS files. One of these JS files then goes and loads a varying amount of content into the page.
I'm trying to get the equivalent of window.onload for this extra content. Obviously, window.onload actually fires very quickly, when the page is done loading the two JS files.
Any ideas? I know I can go and attach onload events to every image/script/etc on the page, but would rather not...
EDIT. If the callback won't help .load should do the job. I've added it to the example.
In this case you need a call back. Are you using a JavaScript library? if so what library?
In your existing code, after you append to the document you need to call a function that can execute the next bit of code.
something like this.
//FILE 1
$(function () {
$('body').append(someHTMLOrDOMNodes);
//I don't know what your second script does, but you should name this callback something relevant.
$('#idOfNewContent').load(function() {
callback();
});
});
//FILE 2
function callback() {
//next bit of code.
}
I’m using jQuery for my project. $(function(){...}) fires the function “when the DOM is ready” — this doesn’t say that all images are loaded, right?
Is there an event that gets fired when every image is loaded too?
I guess you mean
http://api.jquery.com/ready/
versus
http://api.jquery.com/load-event/
Example: Run a function when the page is fully loaded including graphics.
$(window).load(function () {
// run code
});
without jQuery:
window.onload=function() {
alert(document.images.length);
}
You can check on load event of image tag. This will get fired when image loading completes.
$("img").load(function(){
// your code
});
window.onload will solve this, I wrote about this there: http://amrelgarhy.com/blog/how-to-tell-when-images-have-loaded/