deferred-loading

How do I set the load and execution order of two external async Javascript files? Given the following... <script src="framework.js" async></script> // Larger file <script src="scripts.js" async></script> // Small file Though second in order scripts.js is downloading and executing before framework.js due to it's file size, but scripts.js is dependent on framework.js . Is there a way natively to specify the load and execution order whilst still maintaining async properties? You want to use defer if you want to preserve the execution order. What defer does is it async downloads the script, but

Google recommends scripts should be "deferred", but they do not mention the defer attribute of the <script> tag. I wonder why they don't even mention it, considering it has been around a while. Instead they suggest injecting scripts into the DOM. Is there any particular benefit of this over using the much simpler and cleaner defer attribute? https://developers.google.com/speed/docs/best-practices/payload?csw=1#DeferLoadingJS I gather there are some minor issues with old browsers but I am not supporting anything before IE10 and mostly interested in optimising for mobile browsers. UPDATE: As an

This question already has an answer here: Python: Why is functools.partial necessary? 6 answers Let's say we have a basic function: def basic(arg): print arg We need to defer the evaluation of this function in another function. I am thinking about 2 possible ways: Using lambdas: def another(arg): return lambda: basic(arg) Using functools.partial from functools import partial def another(arg): return partial(basic, arg) Which of these approaches is preferred and why? Is there another way of doing this? Lambdas don't store data which is not in its argument. This could lead to strange behaviors:

Google pagespeed is complaining about my facebook like button script. How can I defer the script? 45KiB of JavaScript is parsed during initial page load. Defer parsing JavaScript to reduce blocking of page rendering. http://static.ak.facebook.com/.../xd_arbiter.php ?... (21KiB of inline JavaScript) https://s-static.ak.facebook.com/.../xd_arbiter.php ?... (21KiB of inline JavaScript) http://www.facebook.com/.../like.php ?... (3KiB of inline JavaScript) Here's the code I'm using and I'm loading it into a .js file in the footer of my page. (function(d,s,id){ var js,fjs = d.getElementsByTagName(s)

I am displaying a Norton Secure Site Seal in a website and I would like to improve the page speed deferring the loading of the seal script. All the tries I've done failed and I found only this page where this is mentioned ( link ). Has anyone ever found a good workaround for this? The deferred code I'm using to run my other scripts looks like this: <script type="text/javascript">(function(d, s) { var js, fjs = d.getElementsByTagName(s)[0], load = function(url, id) { if (d.getElementById(id)) { return; } js = d.createElement(s); js.src = url; js.id = id; fjs.parentNode.insertBefore(js, fjs); };

In order to avoid javascript to block webpage rendering, can't we just put all all our JS files/code to be loaded/executed simply before the closing </body> tag? All JS files and code would be downloaded and executed only after the all page has being rendered, so what's the need for tricks like the one suggested in this article about non blocking techniques to load JS files . He basically suggests to use code like: document.getElementsByTagName("head")[0].appendChild(script); in order to defer script laod while letting the webpage to be rendered, thus resulting in fast rendering speed of the