JS: Number.parseInt

By Xah Lee. Date: . Last updated: .

Convert string to a integer. radix defaults to 10.

// string to number
console.log( parseInt("324") === 324 );

Number.parseInt is same function as the global function parseInt.

[see JS: the Global Object]

console.log ( Number.parseInt === window.parseInt ); // true

// in nodejs
// console.log ( Number.parseInt === global.parseInt );

Hexadecimal String to Number

Using the radix argument.

// hexadecimal string to number
console.log( parseInt("ff", 16) === 255 ); // true

Binary String to Number

// binary string to number
console.log ( parseInt("101", 2) === 5 ); // true

JS Number

  1. Format Number
  2. String to Number
  3. Random Number

JS String

  1. String Overview
  2. Template String
  3. Char, Code Unit, Codepoint
  4. String Escape Sequence
  5. Unicode Escape Sequence

Like it? Help me by telling your friends. Or, Put $5 at patreon.

Or, Buy JavaScript in Depth

If you have a question, put $5 at patreon and message me.

Web Dev Tutorials