# @polymer/prism-element > Prism.js import and syntax highlighting Latest version **3.0.1** (published 2018-09-14) · BSD-3-Clause license · 0 weekly downloads ## Install ```sh npm install @polymer/prism-element pnpm add @polymer/prism-element yarn add @polymer/prism-element bun add @polymer/prism-element ``` ## Health **Score 25/100 (F)** — status: abandoned. Positive: no vulnerabilities. Warnings: low downloads; no types; no esm support. Negative: abandoned. ## Facts | | | |---|---| | Version | 3.0.1 | | Published | 2018-09-14 | | First published | 2016-02-02 | | Weekly downloads | 0 | | License | BSD-3-Clause | | TypeScript types | none | | Module format | CommonJS | | Dependencies | 2 | | Unpacked size | 19.1 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 17 | | Author | The Polymer Project Authors | | Maintainers | aomarks, azakus, bicknellr, emarquez, justinfagnani, keanulee, notwaldorf, polymer-devs, samli, sorvell, usergenic | | Keywords | web-components, polymer, prism, molecule | ## Links - npm: https://www.npmjs.com/package/@polymer/prism-element - Repository: https://github.com/PolymerElements/prism-element - Homepage: https://github.com/PolymerElements/prism-highlighter - Issues: https://github.com/PolymerElements/prism-element/issues - npm.io page: https://npm.io/package/@polymer/prism-element ## Dependencies (2) - [prismjs](https://npm.io/package/prismjs.md) ^1.11.0 - [@polymer/polymer](https://npm.io/package/@polymer/polymer.md) ^3.0.0 ## Alternatives - [@oh-my-pi/pi-natives](https://npm.io/package/@oh-my-pi/pi-natives.md) — 51.8K weekly downloads - [@capgo/capacitor-light-sensor](https://npm.io/package/@capgo/capacitor-light-sensor.md) — 3.0K weekly downloads - [@heyhuynhgiabuu/pi-diff](https://npm.io/package/@heyhuynhgiabuu/pi-diff.md) — 492 weekly downloads - [@lotsa/verdant-lang-asm](https://npm.io/package/@lotsa/verdant-lang-asm.md) — 38 weekly downloads - [new-era-syntax](https://npm.io/package/new-era-syntax.md) — 20 weekly downloads ## Recent versions - 3.0.1 (latest) — 2018-09-14 - 3.0.0-pre.20 (next) — 2018-06-23 - 1.2.0-pre.3 (preview) — 2017-01-24 - 3.0.0 — 2018-09-13 - 3.0.0-pre.26 — 2018-09-12 - 3.0.0-pre.25 — 2018-08-29 - 3.0.0-pre.24 — 2018-08-29 - 3.0.0-pre.23 — 2018-08-25 - 3.0.0-pre.22 — 2018-08-25 - 3.0.0-pre.21 — 2018-06-23 - 3.0.0-pre.19 — 2018-05-09 - 3.0.0-pre.18 — 2018-05-09 - 3.0.0-pre.17 — 2018-05-08 - 3.0.0-pre.16 — 2018-05-04 - 3.0.0-pre.15 — 2018-05-02 - … 17 more at https://npm.io/package/@polymer/prism-element/versions ## README [![Published on NPM](https://img.shields.io/npm/v/@polymer/prism-element.svg)](https://www.npmjs.com/package/@polymer/prism-element) [![Build status](https://travis-ci.org/PolymerElements/prism-element.svg?branch=master)](https://travis-ci.org/PolymerElements/prism-element) [![Published on webcomponents.org](https://img.shields.io/badge/webcomponents.org-published-blue.svg)](https://webcomponents.org/element/@polymer/prism-element) ## <prism-highlighter> Syntax highlighting via [Prism](http://prismjs.com/). Place a `` in your document, preferably as a direct child of ``. It will listen for `syntax-highlight` events on its parent element, and annotate the code being provided via that event. The `syntax-highlight` event's detail is expected to have a `code` property containing the source to highlight. The event detail can optionally contain a `lang` property, containing a string like `"html"`, `"js"`, etc. This flow is supported by [``](https://github.com/PolymerElements/marked-element). See: [Documentation](https://www.webcomponents.org/element/@polymer/prism-element), [Demo](https://www.webcomponents.org/element/@polymer/prism-element/demo/demo/index.html). ## Usage ### Installation ``` npm install --save @polymer/prism-element ``` ### In an html file ```html

``` ### In a Polymer 3 element ```js import {PolymerElement, html} from '@polymer/polymer'; import '@polymer/prism-element/prism-element.js'; import '@polymer/prism-element/prism-highlighter.js'; import '@polymer/prism-element/prism-theme-default.js'; class SampleElement extends PolymerElement { static get template() { return html`

`; } connectedCallback() { super.connectedCallback(); const ev = new CustomEvent('syntax-highlight'); // enter code and language here ev.detail = { code: 'p { background-color: blue }', lang: 'css', }; this.$.parent.dispatchEvent(ev); // detail is modified by prism-highlighter this.$.output.innerHTML = ev.detail.code; } } customElements.define('sample-element', SampleElement); ``` ## Contributing If you want to send a PR to this element, here are the instructions for running the tests and demo locally: ### Installation ```sh git clone https://github.com/PolymerElements/prism-element cd prism-element npm install npm install -g polymer-cli ``` ### Running the demo locally ```sh polymer serve --npm open http://127.0.0.1:/demo/ ``` ### Running the tests ```sh polymer test --npm ``` --- _Source: https://npm.io/package/@polymer/prism-element · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._