Remove value from array

When you need to remove a specific value from an array, you can use the following one-liner to create a copy array without the given value:

array.filter(function(val) { return val !== to_remove; });

Or if you want to change the array itself without creating a copy (for example if you write a function that get an array as a function and manipulates it) you can use this snippet:

while (index = array.indexOf(3) !== -1) { array.splice(index, 1); }

And if you need to remove just the first value found, remove the while loop:

var index = array.indexOf(to_remove);
if (index !== -1) { array.splice(index , 1); }