We are currently in the process of creating a single page web application using angular js. We have encountered an issue where as we navigate through different URLs, more and more JavaScript is being loaded into the browser memory, causing the application to slow down over time. Is there any method or technique that can be used to enhance the performance of our single page application, especially as it continues to grow in size?
One effective approach is to selectively load your JavaScript files as needed through lazy loading. Rather than loading all files upfront, only load the main JS files initially and implement lazy loading for the necessary JS files before transitioning to another url.
oc.lazyLoad offers a viable solution to address this issue.
Simply download oc.lazyLoad and inject the dependency into your application like so:
var myApp = angular.module("MyApp", ["oc.lazyLoad"]);If you have a specific JS file named testModule.js with known usage, ensure to load this file before navigating to its corresponding URL:
myApp.controller("MyCtrl", function($ocLazyLoad) {
$ocLazyLoad.load('testModule.js');
});
For further details and insights, refer to this resource.
Keep an eye out for memory leaks :
If your application is running slow, consider reducing the number of watches, using one-time bindings, and implementing track by in ng-repeat. If you still experience memory issues, it's important to monitor what is causing the increase.
For an easy performance boost, remember to include this configuration in your app when going into production:
$compileProvider.debugInfoEnabled(false);
Maximize efficiency by combining all JavaScript files into one to minimize network traffic. Look up tools that concatenate JavaScript for easier integration.
To optimize further, consider minifying or obfuscating your JavaScript code.
Integrate the consolidated JavaScript file into the main index.html instead of reloading it in separate views.
If performance problems persist, a larger problem may need to be addressed.
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