3 examples of 'mdn findindex' in JavaScript

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2export function findIndex(el:HTMLElement):number {
3 if (!el.parentElement) {
4 return -1;
5 }
6
7 const children = Array.from(el.parentElement.children);
8 return children.indexOf(el);
9}
6function findIndexByName(name) {
7 return _.findIndex(_.eq(name));
8}
199export function findIndex <a>(x: A, a: ArrayLike<a>): number {
200 for (let i = 0, l = a.length; i &lt; l; ++i) {
201 if (x === a[i]) {
202 return i
203 }
204 }
205 return -1
206}</a></a>

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