{"id":9603,"date":"2015-12-22T12:11:27","date_gmt":"2015-12-22T10:11:27","guid":{"rendered":"http:\/\/www.webcodegeeks.com\/?p=9603"},"modified":"2015-12-17T11:49:45","modified_gmt":"2015-12-17T09:49:45","slug":"improve-angular-1-x-startup-time","status":"publish","type":"post","link":"https:\/\/www.webcodegeeks.com\/javascript\/angular-js\/improve-angular-1-x-startup-time\/","title":{"rendered":"Improve your Angular 1.x startup time"},"content":{"rendered":"

This neat and simple trick originally appeared about a year ago on this blog post<\/a>, so it’s not something I came up with by myself.<\/p>\n

“Angular\u2019s watcher functions for ng-bind and text nodes () put binding information inside the respective DOM elements using jQuery .data method. This is unfortunately a very expensive operation that impacts both load times and time taken to delete nodes. Fortunately this information is not used in actual binding and is mostly for debugging purposes.”<\/p><\/blockquote>\n

Note, this can be used starting from Angular 1.3+ onwards.<\/strong><\/p>\n

I first discovered it in Swimlane’s<\/a> Angular 1 SystemJS seed project<\/a>. The trick basically consists in disabling the debug information<\/strong> on the $logProvider<\/code> as well as $compileProvider<\/code> through dedicated function calls. That could look like this:<\/p>\n

angular\r\n  .module('myApp', [])\r\n  .config(function($logProvider, $compileProvider) {\r\n\r\n    if (window.prod) {\r\n      $logProvider.debugEnabled(false);\r\n      $compileProvider.debugInfoEnabled(false);\r\n    }\r\n\r\n  });<\/pre>\n
Now you may ask yourself, where does window.prod<\/code> come from? Well that’s basically something you have to set during your production build. Frankly, it could be as simple as<\/p>\n
<!doctype html>\r\n<html>\r\n  ...\r\n  <script>\r\n    window.prod = true;\r\n  <\/script>\r\n<\/html><\/pre>\n
Obviously you may want to automate this through your build configuration, like to inject it right in the beginning of your main application script.<\/p>\n
In a RequireJS Grunt task that might look like…<\/p>\n
...\r\n  requirejs: {\r\n    dist: {\r\n      options: {\r\n        ...\r\n        wrap: {\r\n          start: '(function() { window.prod = true; })();'\r\n        }\r\n      }\r\n    }\r\n }<\/pre>\n
..or as the guys from Swimlane did in their Gulp configuration<\/a><\/p>\n
...\r\n return gulp.src('dist\/app\/app.js')\r\n    .pipe(insert.prepend(\"window.prod = true;\\n\"))\r\n    .pipe(insert.prepend(cacheBust))\r\n    .pipe(gulp.dest('dist\/app'));\r\n...<\/pre>\n
It is a nice and easy way to add a performance booster that can be added without any major effort \"\".<\/p>\n
\n\n\n\n
Reference: <\/span><\/td>\nImprove your Angular 1.x startup time<\/a> from our WCG partner<\/a> Juri Strumpflohner at the Juri Strumpflohner’s TechBlog<\/a> blog.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
This neat and simple trick originally appeared about a year ago on this blog post, so it’s not something I came up with by myself. “Angular\u2019s watcher functions for ng-bind and text nodes () put binding information inside the respective DOM elements using jQuery .data method. This is unfortunately a very expensive operation that impacts …<\/p>\n","protected":false},"author":5,"featured_media":909,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"class_list":["post-9603","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-angular-js"],"yoast_head":"\nImprove your Angular 1.x startup time - Web Code Geeks - 2026<\/title>\n<meta name=\"description\" content=\"This neat and simple trick originally appeared about a year ago on this blog post, so it's not something I came up with by myself. 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