Javascript Array toString()

The syntax of the toString() method is:

arr.toString()

Here, arr is an array.

toString() Parameters

The toString() method does not have any parameters.

Return value from toString()

• Returns a String, representing the values of the array separated by a comma

Example: Using toString() method

var info = ["Terence", 28, "Kathmandu"];

var info_str = info.toString();

// toString() does not change the original array
console.log(info); // [ 'Terence', 28, 'Kathmandu' ]

// toString() returns the string representation
console.log(info_str); // Terence,28,Kathmandu

var collection = [5, null, 10, "JavaScript", NaN, [3, [14, 15]]];
console.log(collection.toString()); // 5,,10,JavaScript,NaN,3,14,15

Output

[ 'Terence', 28, 'Kathmandu' ]
Terence,28,Kathmandu
5,,10,JavaScript,NaN,3,14,15

Here, we can see that the toString() method converts all the array elements into a string and separates each element by a comma.

Recommended Readings:

• JavaScript Array
• JavaScript Array join()