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How to Determine Whether a JavaScript Array Has a Value
Lucas Simon
8 June 2024
How to Determine Whether a JavaScript Array Has a Value

There are multiple ways to check if an array in JavaScript includes a value. For basic checks, the includes technique is succinct and effective. More flexibility is offered by find and findIndex for more complicated scenarios. Lookups in huge arrays can be optimized by using a Set object.

JavaScript ES6
Practical Methods for JavaScript Substring Checking
Emma Richard
2 June 2024
Practical Methods for JavaScript Substring Checking

This tutorial offers multiple ways to determine whether a string in JavaScript contains a substring. It investigates ways with the includes(), RegExp, and indexOf() approaches. Advanced techniques for intricate situations are also covered, including discovering all occurrences and using case-insensitive searches.

JavaScript ES6