--- title: Learn JavaScript 2026 — Part 1: Arrays, Objects,... description: A beginner-focused JavaScript tutorial covering five core language fundamentals: arrays (creation, indexing, common methods), objects (key-value pairs,... canonical: https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Learn JavaScript 2026 — Part 1: Arrays, Objects, Functions, Loops, and Conditions | daily.dev og:description: A beginner-focused JavaScript tutorial covering five core language fundamentals: arrays (creation, indexing, common methods), objects (key-value pairs,... og:url: https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc og:image: https://api.daily.dev/og/posts/V7IaEXHfC.png og:image:alt: Learn JavaScript 2026 — Part 1: Arrays, Objects, Functions, Loops, and Conditions og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Learn JavaScript 2026 — Part 1: Arrays, Objects, Functions, Loops, and Conditions **[Medium](https://daily.dev/sources/medium_js)** · 24 min read · 2 upvotes · 0 comments ## Summary A beginner-focused JavaScript tutorial covering five core language fundamentals: arrays (creation, indexing, common methods), objects (key-value pairs, property access, built-in methods), functions (declarations, expressions, arrow functions, return), loops (for, while, do-while, for-of, for-in), and conditions (if/else, comparison operators, logical operators, ternary). Each section includes line-by-line code explanations and ten interview questions to reinforce the concepts. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Basics of JavaScript](https://daily.dev/posts/the-basics-of-javascript-vp6w47za7) · Medium · 2 upvotes · 0 comments - [JavaScript Interview Preparation Challenge : Day 2](https://daily.dev/posts/javascript-interview-preparation-challenge-day-2-y9pndxttk) · Medium · 1 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript) [View this post on daily.dev](https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Learn JavaScript 2026 — Part 1: Arrays, Objects, Functions, Loops, and Conditions","url":"https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc"},"datePublished":"2026-07-24T04:08:40.044Z","dateModified":"2026-07-24T04:10:09.402Z","description":"A beginner-focused JavaScript tutorial covering five core language fundamentals: arrays (creation, indexing, common methods), objects (key-value pairs,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d6ab0a9a223ee01bc82d647f54feb2d2?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/d6ab0a9a223ee01bc82d647f54feb2d2?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Medium","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Medium","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/medium","url":"https://daily.dev/sources/medium_js"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/learn-javascript-2026-part-1-arrays-objects-functions-loops-and-conditions-v7iaexhfc","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript","timeRequired":"PT24M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Medium","item":"https://daily.dev/sources/medium_js"},{"@type":"ListItem","position":3,"name":"Learn JavaScript 2026 — Part 1: Arrays, Objects, Functions, Loops, and Conditions"}]} ```