I'm Arunkumar Chandra and I'm a full-stack QA Engineer, working as QA for the past 5 and half years. Having expertise in various automation tools, programming languages, agile, build configuration tools. I'm always passionate about exploring new technologies and domains. LinkedIn

JavaScript Tutorial

Prototype in JavaScript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript A prototype is an existing inbuilt functionality in JavaScript. Whenever we create a JavaScript function, JavaScript adds a prototype property to that function. A prototype is an object, where…

JavaScript Tutorial

Arrow Function in JavaScript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript As discussed in the previous articles,  JavaScript follows the ECMAScript (ES) standards. The ES6 or ECMAScript 2015 specifications led to the introduction of some of the most revolutionary features…

JavaScript Tutorial

JavaScript Async Await

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript We all know that JavaScript is the synchronous and single-threaded programming language. That is to say, only one task can perform at any point in time. But on the…

JavaScript Tutorial

Promises in JavaScript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript A promise in real life is just an assurance about ‘something.’ So what happens when somebody makes a promise to you? They give you a guarantee based on which…

DOM in JavaScript

DOM in JavaScript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript When developing a front-end application, one of the most expected things a programmer wants to do is to manipulate the document structure in some way. It happens by using…

Closures in JavaScript

Closures in JavaScript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript Closures are one of the fundamental concepts of JavaScript that every JavaScript developer should know and understand. Yet, it’s a concept that confuses many new JavaScript developers. Having an…

What is JavaScript Timeout?

What is JavaScript Timeout?

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript There can be multiple scenarios where a programmer decides to execute a function at a later time, instead of running it instantaneously. This kind of behavior is “scheduling as…

JavaScript Let vs Var vs Const

JavaScript Let vs Var vs Const

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript Let, Var, and Const are the various ways that JavaScript provides for declaration of JavaScript Variables. Var is an old way of declaring variables. Whereas, Let & Const came…

What is JavaScript?

Javascript Array Methods

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript Arrays in JavaScript provide multiple inbuilt functions for the manipulation of array elements. We already covered a few of them related to the addition and deletion of individual elements…

Equality Operator Vs Inequality Operator in Javascript

Equality Operator Vs Inequality Operator in Javascript

JavaScript TutorialJavaScript BasicsIntroductionRun ProgramVariablesFunctionsOperatorsConditional StatementLoopsCommentsEquality Vs Inequality OperatorsArraysJavaScript IntermediateInBuild Array MethodsLet vs Var vs ConstCallback FunctionsStringMath ObjectObjectsJavaScript AdvanceTimeoutPromises in JavaScriptDOMClosuresAsync AwaitArrow Function in JavaScriptPrototype in JavaScript Comparing any two values for equality/inequality is one of the basic functionalities provided by any programming language. Each programming language provides some operators to compare all kinds of operands.…