deferred-loading

来源： https://stackoverflow.com/questions/62222047/how-to-completely-defer-loading-google-recaptcha-until-after-the-page-fully-load

问题 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

问题 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? 回答1: You want to use

问题 This question already has answers here : Defer loading and parsing of PrimeFaces JavaScript files (2 answers) Closed 4 years ago . The google pagespeed is indicating that loading primefaces.js is slowing down my page: From the pagespeed report: Defer parsing of JavaScript By minimizing the amount of JavaScript needed to render the page, and deferring parsing of unneeded JavaScript until it needs to be executed, you can reduce the initial load time of your page. Suggestions for this page 284

问题 Since using $.Deferred I've run into this scenario a couple times: I have a list of values each of which yields a Deferred Object in some way and I want to execute a callback once all of the Deferred Objects are resolved. A more concrete example would be something like this: var urls = [ 'foo.com', 'bar.com', 'baz.com', 'qux.com' ], defers = [], defer; for( var i = 0, j = urls.length; i < j; i++ ){ defer = $.ajax({ url: 'http://' + urls[ i ] }); defers.push(defer); } $.when.apply(window,

问题 I wanted to know what is the most recommended way in terms of optimization, caching and page load speed. Should I dynamically insert the JS files in the BODY or HEAD of my website document when using Defer loading? 回答1: If you are using DEFER, it does not matter whether you put the script tag in the HEAD or BODY as far as when the script will run, or cache. Either way, it will run after the page is finished parsing, and will cache according to the server headers sent with the javascript file.

问题 Question: Is it possible to load a WordPress shortcode on demand, e.g. with a button? Explanation: I have a gallery plugin, it has a shortcode. Unfortunately, the plugin does NOT use image defer mechanism on page load. So it has too many image requests that hurt speed ranking. Is this idea possible: I want a "load gallery" button. When it's pressed, the gallery shortcode is loaded . Any recommendation / article / key concepts is welcomed. I don't even know where to start. 回答1: You can add

问题 I need to run script only when DOM is ready as script does some rewriting of certain attributes of certain tags. Currently I use document.addEventListener on DOMContentLoaded or if not available document.attachEvent on onreadystatechange and if both not given I use window.onload functionality. I read about defer tag for scripts that should be executed after document is parsed. Does this mean that by setting defer attribute I can easily execute my script when DOM is ready? Is there some hidden

问题 I'm trying to use OmniFaces to defer PrimeFaces scripts, as seen in this answer. But PrimeFaces render an inline script in head, like this (script beautified and commented by me): <script type="text/javascript"> if(window.PrimeFaces) { // this line is always rendered in Development mode. PrimeFaces.settings.projectStage='Development'; // these lines are added if Client Side Validation is enabled. PrimeFaces.settings.locale='pt_BR'; PrimeFaces.settings.validateEmptyFields=true; PrimeFaces

问题 I'm testing my pagespeed everyday several times. My page often receives a grade between 94 to 98, with the main problems being: Eliminate render-blocking resources - Save 0.33 Defer unused CSS - Save 0.15 s And in Lab data, all values are green. Since yesterday, suddenly page speed has dropped, to about 80-91 range, with the problems being: Eliminate render-blocking resources - Save ~0.33 Defer unused CSS - Save ~0.60 s And it is also saying my First CPU idle is slow ~4,5ms And so is time to