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Splice method lets you add and remove items from an array. I takes a minimum of two arguments, first one marks the index of the array item, second, is a number of items to be removes, set to 0 if no items are to be deleted. The following arguments are the new items to be added to the array. When taking out items from the array, splice will automatically return them.

var colors = ["red","green","blue"];
// Select item with index 1 and remove 1 item. Returns removed color ["green"]
colors.splice(1, 1);

// Add more colors to the array
colors.splice(1, 0, "purple", "yellow"); // colors["red", "purple", "yellow", "blue"]
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