Technology

JavaScript

Browse articles, tutorials and projects about JavaScript. Choose a topic from the list to read the explanations and code examples.

JavaScript variable scope: local and global variablesJavaScript variable scope: local and global variablesExplainer · 1 minSingleton pattern in JavaScript: one instance with an ES6 classJavaScript Singleton pattern: ES6 class, module, TypeScript (and PHP)Explainer · 6 min · verified on 7 September 2026JavaScript strict mode: what it changes and how to enable itJavaScript strict mode: what it changes and how to enable itExplainer · 5 minWhat is the DOM, and how do you change it in JavaScript?What is the DOM, and how do you change it in JavaScript?Explainer · 5 minFunction declaration vs function expression in JavaScriptFunction declaration vs function expression in JavaScriptExplainer · 2 minJavaScript events: onclick, addEventListener and the Event objectJavaScript events: onclick, addEventListener and the Event objectExplainer · 4 minJavaScript variable naming: 6 rules to follow every timeJavaScript variable naming: 6 rules to follow every timeExplainer · 1 min
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