![]() ![]() log ( "Hello" ) setTimeout ( ( ) => delayedGreeting ( ) console. Master with cross-browser functionality including fundamental concepts of ExtJS, its architecture, the Sencha designer, event handling, form components. The standard way of creating a delay in JavaScript is to use its setTimeout method. ExtJS training, designed to provide the requisite knowledge and skills to make you a successful ExtJS expert. Now that we have a better understanding of JavaScript’s execution model, let’s have a look at how JavaScript handles delays and asynchronous operations. You Might Not Actually Need a JS Sleep Function If any of this is news to you, you should watch this excellent conference talk: What the heck is the event loop anyway?. Rather, it will continue on its way, output “Hello!” to the console, then when the request returns a couple of hundred milliseconds later, it will output the number of repos. It will not, however, wait for the request to complete. ![]() The JavaScript interpreter will encounter the fetch command and dispatch the request. renderTo is the element where this panel has to render. Every Ext JS class has different properties to perform some basic functionalities. Ext.Panel is the predefined class in Ext JS for creating a panel. Here we are creating an object of simple panel class Ext.Panel. ![]() This is because fetching data from an API is an asynchronous operation in JavaScript. Ext.create () method is used to create an object in Ext JS. This makes it an extremely versatile tool and it's easy to fix its shortcomings or missing features by just plugging in another library. The most important reason people chose Vue.js is: Vue can easily be integrated with other front-end libraries. If you run this code, it will output “Hello!” to the screen, then the number of public repos attributed to my GitHub account. Vue.js is ranked 1st while ExtJS is ranked 18th. Execution goes from top to bottom.Ĭontrast that with the equivalent JavaScript version: fetch ( '' ). ![]() It then parses the response, outputs the number of public repos attributed to my GitHub account and finally prints “Hello!” to the screen. Our ExtJS Course is conducted on both weekdays and weekends according to the students requirements. get (uri ) )Īs one might expect, this code makes a request to the GitHub API to fetch my user data. Understanding JavaScript’s Execution Modelīefore we get going, it’s important to make sure we understand JavaScript’s execution model correctly.Ĭonsider the following Ruby code: require 'net/http' require 'json' ![]()
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