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. Number Object
  4. Number Constructor
  5. Number.prototype

JS String

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