How-can-I-detect-which-javascript-engine

You can insert js code into Chrome or Firefox Console to detect which javascript engine used. For example Angular or React. Also you can see if website build with Backbone, Ember, Vue, Meteor, Zepto frameworks. Or to detect if jQuery is used on frontend of website.

The list of all js libraries you can check:

• React
• Angular
• Bootstrap
• Backbone
• Ember
• Vue
• Meteor
• Zepto
• jQuery
• Node
• Mocha JS
• Nuxt JS
• Jasmine
• Gatsby JS
• Svelte JS

How to use?

All you need is just open F12 Chrome or Firefox Console 1)And insert the code.

2)Hit Enter.

The Code

//react
if(!!window.React ||
   !!document.querySelector('[data-reactroot], [data-reactid]'))
  console.log('React.js');
//angular
if(!!window.angular ||
   !!document.querySelector('.ng-binding, [ng-app], [data-ng-app], [ng-controller], [data-ng-controller], [ng-repeat], [data-ng-repeat]') ||
   !!document.querySelector('script[src*="angular.js"], script[src*="angular.min.js"]'))
  console.log('Angular.js');
//bootstrap
if(!!document.querySelector('.col-md-3, .col-md-4, .col-md-6, .col-md-8, .col-sm-3, .col-sm-4, .col-sm-6, .col-sm-8, .col-xs-6, .col-xs-12') || !!document.querySelector('script[src*="bootstrap.min.js"],script[src*="bootstrap.bundle.min.js"],script[src*="bootstrap.js"]'))
	console.log('Bootstrap.js');
if(!!window.Backbone) console.log('Backbone.js');
if(!!window.Ember) console.log('Ember.js');
if(!!window.Vue) console.log('Vue.js');
if(!!window.Meteor) console.log('Meteor.js');
if(!!window.Zepto) console.log('Zepto.js');
if(!!window.jQuery) console.log('jQuery.js');
if(!!window.Bootstrap) console.log('Bootstrap.js');
if(!!window.Node) console.log('Node.js');
if(!!document.querySelector('script[src*="mocha.js"]')) console.log('Mocha.js');
//nuxt
var inputs = document.querySelectorAll("link[rel=preload]");var regex = /^.+?\/_nuxt\/.+?$/; for (var i=0; i<inputs.length; i++) if (regex.test(inputs[i].href)) {  console.log('Nuxt.js');break;}
//jasmine
var inputs = document.querySelectorAll("script");var regex = /^.+?\/jasmine-.+?$/; for (var i=0; i<inputs.length; i++) if (regex.test(inputs[i].src)) {  console.log('Jasmine.js');break;}
//Gatsby
var inputs = document.querySelectorAll('meta[name="generator"]');var regex = /^Gatsby.+?$/; for (var i=0; i<inputs.length; i++) if (regex.test(inputs[i].content)) {  console.log('Gatsby.js');break;}
//Svelte
var inputs = document.querySelectorAll('div');var regex = /^svelte.+?$/; for (var i=0; i<inputs.length; i++) if (regex.test(inputs[i].id)) {  console.log('Svelte.js');break;}

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