18979 2012-09-23 21:27:02 +0000 provide way to guarantee order of execution for async scripts 2016-04-20 19:30:45 +0000 1 1 1 Unclassified HTML WG HTML5 spec unspecified PC Windows NT RESOLVED WONTFIX P2 enhancement --- 1 dalimian dave.null arronei mike plh public-html-admin public-html-wg-issue-tracking travil public-html-bugzilla oldest_to_newest 74326 0 dalimian 2012-09-23 21:27:02 +0000 currently html 5 spec provides no clean way for a web developer to ensure order of execution of async scripts. One simple solution to achieve this is to introduce a new attribute to script element - "group" the idea is that if one has <script async="async" group="group1" ...></script> then this script will not be executed until any previous scripts of same group have finished executed. This should be simple for browsers to implement,- when the browser is parsing a script with group="groups1" it just checks if it currently has a download or execution of a script belonging to that group, if not, execute. This would make the web lot faster. What you think? to achieve a similar result currently developers are loading the scripts dynamically (thus async) and listening to the onload event for the script, then in the onload they download a dependent script, - this is a huge performance concern cause in this case the downloads happen sequentially and we want the downloads to happen in parallel. 81676 1 robin 2013-01-21 15:58:23 +0000 Mass move to "HTML WG" 81794 2 robin 2013-01-21 16:01:10 +0000 Mass move to "HTML WG" 125954 3 arronei 2016-04-20 18:47:59 +0000 HTML5.1 Bugzilla Bug Triage: This is solved by using modules. You can create and order using chained imports and then async. 125955 4 dalimian 2016-04-20 19:04:39 +0000 Thanks Arron, could u provide a link to documentation tho 125965 5 travil 2016-04-20 19:30:45 +0000 Here's some early details: https://24ways.org/2014/javascript-modules-the-es6-way/ The EcmaScript spec: https://tc39.github.io/ecma262/2016/ (specifically: https://tc39.github.io/ecma262/2016/#sec-ecmascript-language-scripts-and-modules) <script type="module"> is here for now: https://html.spec.whatwg.org/#the-script-element