JavaScript Array from() Method

The from() method is used to create a new, shallow-copied array instance from a class array or iterable object.

　JavaScript Array Object

　The from() method is used to create a new, shallow-copied array instance from a class array or iterable object.

Note:from()methodlengthThe attribute is1.

Syntax:

Array.from(object, mapFunction, thisArg)

var array = Array.from("w3codebox);
document.getElementById("result").innerHTML = array;

Browser compatibility

The numbers in the table specify the first browser version that fully supports the from() method:

parameter value

Technical Details

More Examples

This example creates an array from a string, then iterates over it:

var arr = Array.from("w3codebox);
var result = document.getElementById("result");
for (let i = 0; i < arr.length; i++) {
result.innerHTML = result.innerHTML　+　'arr['　+　i　+　'] = '　+　arr[i]　+　'<br>';
}

　JavaScript Array Object