How to get a script to load last on webpage?

javascript wait for external script to load
load script after page load
script defer
javascript load order
javascript execute after all scripts loaded
async and defer together
call javascript function after page load complete
domcontentloaded vs load

I have a webpage with mostly basic HTML on it. There is one section where I load an RSS feed using JavaScript pulling from an external source (url). The problem is that my page will load everything up until that script, wait for the script to load (sometimes up to a few seconds), then load the rest of the page.

How can I force it to load the script after it has rendered the entire page first?

My code is something like this:

<html>
<more html>
<script language="JavaScript" src="http://..." type="text/javascript"></script>
<more html>
...

Two options:

  1. Put your script block at the end of the page. This is good practice anyways due to the fact that your page strucutre will load before the script that is intended to manipulate it. Because the user generally notices the page loading but not the script, this gives the appearance of a faster load overall.
  2. Include the defer attribute in the opening script tag. Note that defer can only be used on external script files (those with an src attribute). See https://developer.mozilla.org/en-US/docs/HTML/Element/script.

Efficiently load JavaScript with defer and async, This can be crucial for high volume sites or sites which have a spike in and by moving inline script and CSS into external files, can improve to the user agent about the file it wants to load, such as when it was last modified. Adding a Web Part to a Page Using JavaScript The following example adds a custom content editor Web Part as the second Web Part, in order, within the left zone of the Default.aspx page for a specified website.


A pretty reliable way to make a script load after pageload is to write out the script include itself in javascript.

var theScript = document.createElement("script");
theScript.setAttribute("type","text/javascript");
theScript.setAttribute("src","//www.mysite.com/script.js");
document.getElementsByTagName("head")[0].appendChild(theScript);

How to really defer loading javascript, DOMContentLoaded – the browser fully loaded HTML, and the DOM If we have a script after the style, then that script must wait until the stylesheet loads: time as img.onload ( img is the last resource) and window.onload . I am trying to make a webpage that, when it starts loading, uses an Interval to start a timer. When the page fully loads, it stops the timer, but 99% of the time i get time measurements of 0.00 o


Move your script tag to the end and it will load after everything else. For example:

<html>
  <more html>
  <more html>
  <script language="JavaScript" src="http://..." type="text/javascript"></script>
</html

Tips for authoring fast-loading HTML pages, When the browser loads HTML and comes across a <script>. but many people in the world still have slow internet speeds and use a  I have a link in Page A to B, only possible way to get to page A from page B is using browser back button and i have to do a script if so .So i have to check the url of previous page to check whether its page B. - Gaglad – rv_k Apr 26 '11 at 9:34


You could try wrapping the function that calls the feed in

jQuery(window).load(function(){
//embed RSS feed 
});

forcing it to load last.

Page: DOMContentLoaded, load, beforeunload, unload, How to squeeze more performance out of script loading. Unfortunately it means your script isn't seen by the browser until it downloads all your HTML, and If the element's "force-async" flag is set, then, on getting, the async  Put your script block at the end of the page. This is good practice anyways due to the fact that your page strucutre will load before the script that is intended to manipulate it. Because the user generally notices the page loading but not the script, this gives the appearance of a faster load overall.


Scripts: async, defer, Run your code at the right time by making sense of DOMContentLoaded, load, async, defer, The final stage is where your page is fully loaded with any images​, or your external script takes its sweet time in getting downloaded, your HTML​  An unresponsive script warning is a browser message that appears when JavaScript code on a web page or in an add-on takes too long to run. The message may look like the example below. Warning: Unresponsive script. A script on this page may be busy or may have stopped responding. You have the choice of "Stop Script" or "Continue" buttons.


Deep dive into the murky waters of script loading, A detailed look at the HTML script tag. Functionally this means you can significantly slow down your site if you have slow scripts loading early in the page​. JavaScript provides you with many methods to retrieve and change the current URL, which is displayed in the browser's address bar. All these methods use the Location object, which is a property of the Window object. You can create a new Location object that has the current URL as follows: var currentLocation = window.location; Basic URL Structure.


Running Your JavaScript at the Right Time, They have courses on all the most important front-end technologies, This is when the whole page has finished loading, which is different. Submit an HTML form ^. Invoke-WebRequest also allows you to fill out form fields. Many websites use the HTTP method GET for forms, in which case you simply have to submit a URL that contains the form field entries. If you use a web browser to submit a form, you usually see how the URL is constructed.