JS: Convert String to Number

By Xah Lee. Date: . Last updated: .

String to Integer

JS: Number.parseInt

String to Decimal Number

JS: Number.parseFloat

Number to String

JS: Number.prototype.toString

Note: JavaScript automatically convert number to string. Adding a string to number results string.

let x = 3 + "4";
console.log(x === "34");
console.log(typeof x === "string");

JS String

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

JS Character

  1. Character, Code Unit, Codepoint
  2. Character To/From Codepoint
  3. String.fromCodePoint
  4. String.fromCharCode
  5. String.prototype.charAt
  6. String.prototype.charCodeAt
  7. String.prototype.codePointAt
  8. Convert Decimal/Hex
  9. Unicode Escape Sequence

JS Number

  1. Format Number
  2. String to Number
  3. Number Object
  4. Number.prototype
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