FilterableExamplesFree
slice()Extracts part of string by indexExtract
"hello".slice(1,3) // "el"
substring()Like slice but no negative indicesExtract
"hello".substring(0,3) // "hel"
split()Splits string into arrayTransform
"a,b,c".split(",") // ["a","b","c"]
replace()Replaces first matchTransform
"foo bar".replace("foo","baz") // "baz bar"
replaceAll()Replaces all matchesTransform
"aaa".replaceAll("a","b") // "bbb"
trim()Removes whitespace from both endsTransform
" hi ".trim() // "hi"
trimStart()Removes whitespace from startTransform
" hi".trimStart() // "hi"
trimEnd()Removes whitespace from endTransform
"hi ".trimEnd() // "hi"
toUpperCase()Converts to uppercaseCase
"hello".toUpperCase() // "HELLO"
toLowerCase()Converts to lowercaseCase
"HELLO".toLowerCase() // "hello"
charAt()Returns char at indexSearch
"hello".charAt(0) // "h"
charCodeAt()Returns UTF-16 code at indexSearch
"A".charCodeAt(0) // 65
indexOf()Returns index of first matchSearch
"hello".indexOf("l") // 2
lastIndexOf()Returns index of last matchSearch
"hello".lastIndexOf("l") // 3
includes()Checks if string contains substringSearch
"hello".includes("ell") // true
startsWith()Checks if starts with substringSearch
"hello".startsWith("he") // true
endsWith()Checks if ends with substringSearch
"hello".endsWith("lo") // true
match()Matches against regexRegex
"abc123".match(/\d+/) // ["123"]
matchAll()Returns all regex matchesRegex
"aAbB".matchAll(/[a-z]/g)
search()Returns index of regex matchRegex
"abc123".search(/\d/) // 3
repeat()Repeats string N timesTransform
"ab".repeat(3) // "ababab"
padStart()Pads start to target lengthTransform
"5".padStart(3,"0") // "005"
padEnd()Pads end to target lengthTransform
"5".padEnd(3,"0") // "500"
concat()Concatenates stringsTransform
"hi".concat(" ","there") // "hi there"
at()Returns char at index (supports negative)Search
"hello".at(-1) // "o"
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