Scripts, historically, blocked additional resources from being downloaded more quickly. By placing them at the bottom, your style, content, and media could download more quickly giving the perception of improved performance. Further reading: The async and defer attributes.
I’ve been searching for alternatives and I’ve settled for the following versions. All use explicit wait with a defined timeout and are based on element properties in the first case and on element staleness in the second case. First choice would be checking element properties until a timeout is reached. I’ve arrived to the following … Read more
Typically sites that do this by loading content via ajax and listening to the readystatechanged event to update the DOM with a loading GIF or the content. How are you currently loading your content? The code would be similar to this: function load(url) { // display loading image here… document.getElementById(‘loadingImg’).visible = true; // request your … Read more
The question is does s.async = true have a use for dynamically inserted scripts, or are these loaded asynchronously already. The answer is they aren’t loaded asynchronously in all browsers, as explained here (thanks to Markus Olsson for the link) script-inserted scripts execute asynchronously in IE and WebKit, but synchronously in Opera and pre-4.0 Firefox. … Read more
Page_LoadComplete is the event that is raised after all controls have been loaded Remember that the Init event is first triggered by all child controls, and just when all controls have been initialized, the Init event of the page is raised. The Load event works the other way around, the page first raises the Load … Read more
First of all, <?= is not a short open tag, but a shorthand echo, which is the same as <?php echo. And it cannot be disabled. So, it’s safe to use in the meaning it is always enabled. Speaking of safety in terms of security, the output must be always encoded according the the output … Read more
For a simple plain JavaScript implementation: window.onbeforeunload = function () { window.scrollTo(0, 0); }
Guys, I found that JQuery has only one effect: the page is reloaded when the back button is pressed. This has nothing to do with “ready“. How does this work? Well, JQuery adds an onunload event listener. // http://code.jquery.com/jquery-latest.js jQuery(window).bind(“unload”, function() { // … By default, it does nothing. But somehow this seems to trigger … Read more
These solutions will work: As mentioned in comments use defer: <script src=”deferMe.js” defer></script> or <body onload=”script();”> or document.onload = function … or even window.onload = function … Note that the last option is a better way to go since it is unobstrusive and is considered more standard.
There is a standards based replacement,DOMContentLoaded that is supported by over 99% of browsers, though not IE8: document.addEventListener(“DOMContentLoaded”, function(event) { //do work }); jQuery’s native function is much more complicated than just window.onload, as depicted below. function bindReady(){ if ( readyBound ) return; readyBound = true; // Mozilla, Opera and webkit nightlies currently support this … Read more