How to empty an array [duplicate]

Question

im working on a game(snake) with obstacles, when the user get their score to 5 I create more blocks as obstacles:

wall = new Array(), wall.push(new Rectangle(30, 50, 10, 10));

is there a clear/empty option in js, to delete the rectangles that i insert in the array i try with

rectangle=[];

but it didn't work.

"i try with rectangle=[]; but it didn't work." Where is rectangle defined ? Try wall = [] — guest271314
– guest271314, Commented Mar 20, 2016 at 5:03

Dmitri Pavlutin · Accepted Answer · 2016-03-20 05:06:19Z

There are 2 options:

1) Modify the length property

var wall = new Array(), wall.push(new Rectangle(30, 50, 10, 10)); wall.length = 0;

2) Use the splice() method

wall.splice(0);

Check this interesting article about the length property.

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