String formatting tools which returns a target/receiver string prepended or appended with a repeating pattern of characters: "foo".padStart(10, "0"); -> "0000000foo"; "foo".padEnd(10, "0"); -> "foo0000000";



Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 57
  • Chrome for Android release 57
  • Android WebView release 57

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped/Shipping
  • Shipped/Shipping
  • Shipped/Shipping
  • Positive


Search tags

String, JavaScript, JS, ECMAScript, padStart, padEnd, String.prototype, String.prototype.padStart, String.prototype.padEnd,

Last updated on 2020-11-09