String.prototype

The String prototype.

Syntax

String.prototype

Properties

• at
• charAt
• charCodeAt
• codePointAt
• concat
• endsWith
• includes
• indexOf
• lastIndexOf
• localeCompare
• match
• matchAll
• normalize
• padEnd
• padStart
• repeat
• replace
• replaceAll
• search
• slice
• split
• startsWith
• substr
• substring
• toLocaleLowerCase
• toLocaleUpperCase
• toLowerCase
• toString
• toUpperCase
• trim
• trimEnd
• trimLeft
• trimRight
• trimStart
• valueOf
• length
• [Symbol.iterator]

Deprecated Properties

These properties wrap the string in HTML tags. They are deprecated and should not be used. In web browsers, using them may introduce security vulnerabilities.

• anchor
• big
• blink
• bold
• fixed
• fontcolor
• fontsize
• italics
• link
• small
• strike
• sub
• sup