--- title: Didact: Element creation and JSX | daily.dev description: Part of a series building a React clone called Didact from scratch, this post focuses on adding JSX support. It explains how JSX is syntactic sugar that gets... canonical: https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Didact: Element creation and JSX | daily.dev og:description: Part of a series building a React clone called Didact from scratch, this post focuses on adding JSX support. It explains how JSX is syntactic sugar that gets... og:url: https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k og:image: https://api.daily.dev/og/posts/wmTkrdm9K.png og:image:alt: Didact: Element creation and JSX 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. # Didact: Element creation and JSX **[Rodrigo Pombo](https://daily.dev/sources/pomb)** · 3 min read · 0 upvotes · 0 comments ## Summary Part of a series building a React clone called Didact from scratch, this post focuses on adding JSX support. It explains how JSX is syntactic sugar that gets transpiled by Babel into createElement calls, then walks through implementing a createElement function that handles element type, props, and children — including special handling for text nodes and filtering out null/undefined/false children. A Babel pragma comment is used to wire up the custom createElement function. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#javascript](https://daily.dev/tags/javascript), [#react](https://daily.dev/tags/react), [#dom](https://daily.dev/tags/dom), [#jsx](https://daily.dev/tags/jsx), [#babel](https://daily.dev/tags/babel) [View this post on daily.dev](https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k) ```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":"Didact: Element creation and JSX","url":"https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k"},"datePublished":"2026-03-31T12:29:30.729Z","dateModified":"2026-03-31T12:48:09.383Z","description":"Part of a series building a React clone called Didact from scratch, this post focuses on adding JSX support. It explains how JSX is syntactic sugar that gets...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/bc29cb084cd1f7a0f010d8d4acfbdebe?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/bc29cb084cd1f7a0f010d8d4acfbdebe?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Rodrigo Pombo","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":"Rodrigo Pombo","logo":"https://media.daily.dev/image/upload/logos/placeholder.jpg","url":"https://daily.dev/sources/pomb"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/didact-element-creation-and-jsx-wmtkrdm9k","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript,react,dom,jsx,babel","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Rodrigo Pombo","item":"https://daily.dev/sources/pomb"},{"@type":"ListItem","position":3,"name":"Didact: Element creation and JSX"}]} ```