JS: Array.prototype.join

By Xah Lee. Date: . Last updated: .
const arr = [3, 4, 5];

console.log ( arr.join () === "3,4,5" ); // true

console.log ( arr.join ( "-" ) === "3-4-5" ); // true

[see JS: Array.prototype.toString]

JS Array

  1. Understand JS Array
  2. Create Array
  3. Sparse Array
  4. Array-Like Object
  5. Array How-To

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