Browser Support parseInt() is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers:

Obviously, converting to a Number gives you a value that might be a float rather than an integer, so if you want an integer, you need to modify it. There are a few ways of doing this:

Jul 11, 2025 · The parseInt () method parses a string and returns an integer value of the specified radix (base). If radix is not specified, it takes default value 10 (decimal).

Jul 8, 2025 · The parseInt function converts its first argument to a string, parses that string, then returns an integer or NaN. If not NaN, the return value will be the integer that is the first argument taken as a …

Jun 29, 2022 · This is just one of the many reasons you might want to learn how to convert a string to a number in JavaScript. In this article, we will learn how to convert string to number by going through …

Jul 2, 2025 · Learn how to convert JavaScript strings to integers using parseInt, Number, or unary plus for reliable and efficient type conversion.

Nov 4, 2025 · This guide will break down the **best methods** for converting strings to integers in JavaScript, explain their inner workings with clear examples, and highlight edge cases and pitfalls to …