The toString()
method returns a string representing the
specified array and its elements.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
Syntax
arr.toString()
Return value
A string representing the elements of the array.
Description
The Array
object overrides the toString
method of
Object
. For Array objects, the toString
method joins the
array and returns one string containing each array element separated by commas.
JavaScript calls the toString
method automatically when an array is to be
represented as a text value or when an array is referred to in a string concatenation.
ECMAScript 5 semantics
Starting in JavaScript 1.8.5 (Firefox 4), and consistent with ECMAScript 5th edition
semantics, the toString()
method is generic and can be used with any
object. Object.prototype.toString()
will be called, and the resulting
value will be returned.
Examples
Using toString
const array1 = [1, 2, 'a', '1a'];
console.log(array1.toString());
// expected output: "1,2,a,1a"
Specifications
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Array.prototype.toString' in that specification. |
Browser compatibility
BCD tables only load in the browser