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Why scripts at the end of body tag

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I know this question was asked many times, but I haven't found answer. So why its recommended to include scripts at the end of body tag for better rendering? From Udacity course https://www.udacity.com/course/ud884 - rendering starts after DOM and CSSOM are ready. JS is HTML parse blocking and any script starts after CSSOM is ready. So if we got: <html> <head> <meta name="viewport" content="width=device-width,initial-scale=1"> <title>CRP</title> <link rel="stylesheet" href="styles.css"> </head> <body>  <script src="script.js"></script> </body> </html> CRP would be: CSSOM ready

How to wait for a click() event to load in phantomjs before continuing?

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问题 Phantomjs has these two really handy callbacks onLoadStarted and onLoadFinished which allow you to essentially pause execution while the page is loading. But I've been searching and I can't find an equivalent for if you click() a submit button or hyperlink. A similar page load happens but onLoadStarted doesn't get called for this event I guess because there isn't an explicit page.open() that happens. I'm trying to figure out a clean way to suspend execution while this load takes place. One

Trigger click jquery not working

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I'm figuring out why this simple script is not working: jQuery.noConflict(); jQuery(document).ready(function() { jQuery('.next_button a').trigger('click'); }); noConflict is necessary because I also load prototype/scriptaculous in this page. If I replace .trigger('click') with another function (es: .css(...) this works well. Only triggering seems to go broken. A Bright Worker How can I simulate an anchor click via jquery? Check this link and see this answer by Stevanicus . $('a#swaswararedirectlink')[0].click(); You can only trigger a click that jQuery has created. It's one of jQuery's cute

Auto-click button element on page load using jQuery

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If I wanted to auto-click a button element on page load, how would I go about this using jQuery? The button html is <button class="md-trigger" id="modal" data-modal="modal"></button> Any help on this topic would be greatly appreciated! Thanks in advance! You would simply use jQuery like so... <script> jQuery(function(){ jQuery('#modal').click(); }); </script> Use the click function to auto-click the #modal button JavaScript Pure: <script type="text/javascript"> document.getElementById("modal").click(); </script> JQuery: <script type="text/javascript"> $(document).ready(function(){ $("#modal")

Force page scroll position to top at page refresh in HTML

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I am building a website which I am publishing with div s. When I refresh the page after it was scrolled to position X, then the page is loaded with the scroll position as X. How can I force the page to be scrolled to the top on page refresh? What I can think of is of some JS or jQuery run as onLoad() function of the page to SET the pages scroll to top. But I don't know how I could do that. A better option would be if there is some property or something to have the page loaded with its scroll position as default (i.e. at the top) which will be kind of like page load , instead of page refresh .

Is there an after Page_Load event in ASP.net

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问题 Is there an event that is triggered after all Page_Load events have completed? How can i have more than one Page_Load ? When you have user controls. Before my page can render, i need my page (and all embedded controls) to have initialized themselves by completing their Page_Load events. The problem, of course, is that if i put code in my page's Page_Load handler: MyPage.aspx --> Page_Load ---> DoSomethingWithUserControl() UserControl1.ascx --> Page_Load ---> initialize ourselves now that

How to display a loading screen while site content loads

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问题 I'm working on a site which contains a whole bunch of mp3s and images, and I'd like to display a loading gif while all the content loads. I have no idea how to achieve this, but I do have the animated gif I want to use. Any suggestions? 回答1: 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) {

Is the “async” attribute/property useful if a script is dynamically added to the DOM?

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This question is sort of a tangent to Which browsers support <script async="async" />? . I've seen a few scripts lately that do something like this: var s = document.createElement('script'); s.type = 'text/javascript'; s.async = true; s.src = 'http://www.example.com/script.js'; document.getElementsByTagName('head')[0].appendChild(s); This is a common way to add a script to the DOM dynamically, which, IIRC from Steve Souders's book " Even Faster Web Sites ," prompts all modern browsers to load the script asynchronously (i.e., not blocking page rendering or downloading of subsequent assets). If

AngularJS really slow at rendering with about 2000 elements?

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问题 Here's the fiddle: http://jsfiddle.net/D5h7H/7/ It renders the following: <div ng-repeat="group in Model.Groups"> <span>{{group.Name}}</span> <div ng-repeat="filter in group.Filters"> <input type="checkbox" ng-model="filter.enabled">{{filter.Name}} <select ng-disabled="!filter.enabled"> <option ng-repeat="value in filter.Values">{{value}}</option> </select> </div> </div> It's a list of filters that is loaded in json from the server and then rendered to the user (in an example json is

Why scripts at the end of body tag

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问题 I know this question was asked many times, but I haven't found answer. So why its recommended to include scripts at the end of body tag for better rendering? From Udacity course https://www.udacity.com/course/ud884 - rendering starts after DOM and CSSOM are ready. JS is HTML parse blocking and any script starts after CSSOM is ready. So if we got: <html> <head> <meta name="viewport" content="width=device-width,initial-scale=1"> <title>CRP</title> <link rel="stylesheet" href="styles.css"> <