It's often necessary to measure the distance between two points in 2D space. This method takes the position of the two coordinates, **x1, y1** first, to **x2, y2** second, and returns the distance between them.

```
function getDistance(x1, y1, x2, y2)
{
return (Math.abs(Math.sqrt(((x1-x2) * (x1-x2)) +
((y1-y2) * (y1-y2)))));
}
```