Array
Array – Creates an array.
Description
new Array([mixed params, …])
Parameters
| Name |
Description |
Type |
Default |
Optional |
| params, … |
|
mixed |
|
Yes |
Examples
Example #1 – array example
Two ways of creating an array.
var array = new Array(1, 2, 3);
console.log(array); // [1, 2, 3]
console.log(typeof array); // object
console.log(array.length); // 3
array[3] = 4;
console.log(array); // [1, 2, 3, 4]
var array = [1, 2, 3];
console.log(array); // [1, 2, 3]
console.log(typeof array); // object
console.log(array.length); // 3
array[3] = 4;
console.log(array); // [1, 2, 3, 4]
Example #2 – array example
var array = [1, 2, 3];
array[4] = 5;
console.log(array); // [1, 2, 3, 4: 5]
console.log(array.length); // 11
console.log(array[3]); // undefined
array[3] = 4;
console.log(array); // [1, 2, 3, 4, 5]
Example #3 – array example
Setting initial size of an array. See Array.of to set as value instead.
var array = new Array(10);
console.log(array); // []
console.log(array.length); // 10
Example #4 – array example
var array = [1, 2, 3, 4];
console.log(array); // [1, 2, 3, 4]
var first = array[0];
console.log(first); // 1
var last = array[array.length - 1];
console.log(last); // 4
console.log(array[10]); // undefined
External references