Javascript Array singleRemove(objectToRemove)

/**// www  .ja va2 s .c  o  m
The arguments global variable apparently slow considerably,
it should be used only when there's multiple things to delete
**/
Array.prototype.singleRemove = function(objectToRemove) {
    if ((index = this.indexOf(objectToRemove)) !== -1) {
        this.splice(index,1);
    }
    return this;
}