JavaScript - index of text in string after indicated position

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In this short article, we would like to show how in JavaScript, find text in a string, looking from indicated position.

Quick solution:

// ONLINE-RUNNER:browser;

// We are looking for `is` text position, starting from index 4.

//                 This one
//              |  |
//              v  v
const text = 'This is some example text.';

const startIndex = 4
const foundIndex = text.indexOf('is', startIndex);

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