String.prototype.padStart() / String.prototype.padEnd()

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";

Documentation

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padEnd
• http://www.2ality.com/2015/11/string-padding.html

Specification

Editor's draft

Status in Chromium

Blink components: V8

Enabled by default (launch bug) in:

• Chrome for desktop release 57
• Chrome for Android release 57
• Android WebView release 57
• Opera release 44
• Opera for Android release 44

Consensus & Standardization

• Firefox: Shipped
• Edge: Shipped
• Safari: Shipped
• Web Developers: Positive

Owner

• caitp@chromium.org

Last updated on 2017-06-14