@web3r/flowerkit
Version:
Tree-shakable JavaScript and TypeScript utility library for frontend/browser apps: DOM, events, arrays, objects, strings, date, JSON, and network helpers (ESM/CJS, SSR-friendly).
17 lines (16 loc) • 685 B
JavaScript
/**
* Gets index of Node from relatively its siblings
* @param el{HTMLElement|Node|Element|Document} DOM element
* @returns {number}
* @throws {TypeError} getIndexOfEl: el must be a Node/Element
* @example
* // <ul>
* // <li id="a">A</li>
* // Text node
* // <li id="b">B</li>
* // <li id="c">C</li>
* // </ul>
* getIndexOfEl(document.querySelector("#c")!) // 2
*/
const getIndexOfEl=el=>{if(!el||typeof el.parentNode==="undefined")throw new TypeError("getIndexOfEl: el must be a Node/Element");const parent=el.parentNode;if(parent&&parent.children)return Array.from(parent.children).indexOf(el);else return 0};export{getIndexOfEl};
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