JS: String.prototype
JS: String.prototype.concat
By Xah Lee. Date:
2017-02-17
. Last updated:
2026-02-02
.
str
.concat(
str1
,
str2
,
etc
)
Join strings
console.assert
(
"a"
.
concat
(
"b"
,
"c"
) ===
"abc"
);
JS String.prototype
JS: String.prototype.constructor
JS: String.prototype.length
JS: String.prototype.at (extract char at index)
JS: String.fromCharCode (id to char) 👎
JS: String.prototype.concat
JS: String.prototype.repeat
JS: String.prototype.trim
JS: String.prototype.trimStart
JS: String.prototype.trimEnd
JS: String.prototype.padStart
JS: String.prototype.padEnd
JS: String.prototype.slice
JS: String.prototype.substring 👎
JS: String.prototype.substr
JS: String.prototype.indexOf
JS: String.prototype.lastIndexOf
JS: String.prototype.includes
JS: String.prototype.startsWith
JS: String.prototype.endsWith
JS: String.prototype.search
JS: String.prototype.match
JS: String.prototype.matchAll
JS: String.prototype.replace
JS: String.prototype.split
JS: String.prototype.toLowerCase
JS: String.prototype.charAt (extract char at index) 👎
JS: String.prototype.charCodeAt (char to id) 👎
JS: String.prototype.codePointAt (char to id)
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