// bad
const items = new Array();
// good const items = [];
They obviously spent a lot of time on this guide, lots of investor dollars, and it's of almost no use.
// good const items = [];
They obviously spent a lot of time on this guide, lots of investor dollars, and it's of almost no use.
a = new Array(10);
b = [10];
alert(a[0]);
alert(b[0]);
Do you know the difference?
This is just one reason. Also [] will be faster. Just google the differences and why [] is recommended to use.
> new Array('a')
["a"]
> new Array(2, 3)
[2, 3]
> new Array(2)
[undefined, undefined]
> new Array(2.3)
RangeError: invalid array length
> new Array(2.3, 4.5)
[2.3, 4.5]
ES6 added `Array.of` for this reason:
> Array.of()
[]
> Array.of(1)
[1]
> Array.of(1, 2)
[1, 2]