Widely availableSupported across all major browsers. Safe to use in production.
Strings Widely available

String trimStart() and trimEnd()

The trimStart() and trimEnd() methods of strings return a new string with whitespace removed from the beginning or end of the string.

Strings

Overview

The trimStart() and trimEnd() methods of strings return a new string with whitespace removed from the beginning or end of the string.

Browser support

Feature Desktop Mobile
Chrome
Edge
Firefox
Safari
Chrome Android
Safari iOS
javascript.builtins.String.trimEnd
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Built-in object
String.trimStart

The trimStart() method of String values removes whitespace from the beginning of this string and returns a new string, without modifying the original string. trimLeft() is an alias of this method.
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1+Supported (version) Not supported ※Has note Sub-feature descriptions sourced from MDN Web Docs (CC BY-SA 2.5)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimRight (4)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimRight (12)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimRight (3.5)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimRight (18)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimLeft (4)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimLeft (12)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimLeft (3.5)
Notes 1 item(s)
Implementation note
  • Previously available under a different name: trimLeft (18)

Syntax

JAVASCRIPT 
'  hello  '.trimStart(); // 'hello  '
'  hello  '.trimEnd();   // '  hello'
'  hello  '.trim();      // 'hello'

Live demo

start. emptywhiteexclude

TrimStart Use, string. leftside. margin. only getexclude..

PreviewFullscreen

end. emptywhiteexclude

TrimEnd Use, string. rightside. margin. only getexclude..

PreviewFullscreen

Inputform. Format

yu-za- that inputvalue. beforeafter to existsnot-main spe-s batch in getexclude..

PreviewFullscreen

Use cases

  • Using String trimStart() and trimEnd()

    The trimStart() and trimEnd() methods of strings return a new string with whitespace removed from the beginning or end of the string.

Cautions

  • No specific concerns. Stable across all major browsers.

Accessibility

  • When updating the DOM dynamically, announce important changes to assistive technology with aria-live regions.

Related links

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