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Add an example to search for multi-byte pattern in an array #39479

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Update index.md
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def00111 authored May 11, 2025
commit 163c953c80e942c8866e33aba6230d61881687a5
Original file line number Diff line number Diff line change
Expand Up @@ -318,7 +318,7 @@ browser.webRequest.onBeforeRequest.addListener(
This example demonstrates, how to search for multi-byte pattern in an array:
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This example is very large now. Should it be on https://github.com/mdn/webextensions-examples?

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@def00111 yes, I think this is now getting to the point where we need to move it out of the documentation into a web extensions example.

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```js
Array.prototype.indexOfMulti = function(searchElements, fromIndex) {
Array.prototype.indexOfMulti = function (searchElements, fromIndex) {
let i = this.indexOf(searchElements[0], fromIndex);
if (searchElements.length === 1 || i === -1) {
// Not found or no other elements to check
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