Web Reference: Jul 20, 2025 · The includes() method of Array instances determines whether an array includes a certain value among its entries, returning true or false as appropriate. String.prototype.includes() was introduced in ECMAScript 2015 whereas Array.prototype.includes() was introduced in ECMAScript 2016. With regards to browser support, use them wisely. Description prototype allows you to add new properties and methods to arrays. prototype is a property available with all JavaScript objects.
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9 Array Prototype Includes Javascript Net Worth 2026: Salary, Income & Wealth Net Worth & Biography

Estimated Worth: $4M - $12M
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Last Updated: April 11, 2026
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