var colors=["red","blue"];
var index=1;
//insert "white" at index 1
colors.splice(index, 0, "white"); //colors = ["red", "white", "blue"]
var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";
console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());var arr = [];
arr[0] = "Apple";
arr[1] = "Grape";
arr[2] = "Pear";
arr[3] = "Peach";
arr[4] = "Grapefruit";
console.log(arr.join()); // Apple,Grape,Pear,Peach,Grapefruit
arr.splice(2, 0, "Orange");
console.log(arr.join()); // Apple,Grape,Orange,Pear,Peach,Grapefruit