JS: RegExp.prototype.test

By Xah Lee. Date: . Last updated: .

regex.test(string)

Return true if regex match part or whole of string, else false.

// example of RegExp “test” method
// check if a string match

const gx = RegExp ("4");

console.log ( gx.test ("345")); // true
console.log ( gx.test ("999")); // false

JS RegExp

  1. RegExp Tutorial
  2. RegExp Syntax
  3. Regex Find/Replace

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

  1. HTML
  2. CSS
  3. JavaScript
  4. JS Obj Ref
  5. DOM
  6. SVG
  7. Blog