JavaScript Reference: String

All about the JavaScript String properties and methods

The String object has one static method, String.fromCharCode(), which is used to create a string representation from a sequence of Unicode characters. Here we build a simple string using the ASCII codes

String.fromCodePoint(70, 108, 97, 118, 105, 111) //'Flavio'

You can also use octal or hexadecimal numbers:

String.fromCodePoint(0x46, 0154, parseInt(141, 8), 118, 105, 111) //'Flavio'

All the other methods described here are instance methods: methods that are run on a string type.

Instance methods

A string offers a few unique methods you can use:

• charAt(i)
• charCodeAt(i)
• codePointAt(i)
• concat(str)
• endsWith(str)
• includes(str)
• indexOf(str)
• lastIndexOf(str)
• localeCompare()
• match(regex)
• normalize()
• padEnd()
• padStart()
• repeat()
• replace(str1, str2)
• search(str)
• slice(begin, end)
• split(separator)
• startsWith(str)
• substring()
• toLocaleLowerCase()
• toLocaleUpperCase()
• toLowerCase()
• toString()
• toUpperCase()
• trim()
• trimEnd()
• trimStart()
• valueOf()