JavaScript: How the extra commas are interpreted in Array Literal notation

Given below array, which has two commas with no data, how it is interpreted.

var arr = ["Cricket", , "Football"]

Missing elements in the array are treated as undefined.

HelloWorld.js

var arr = ["Cricket", , "Football"]

console.log("arr[0] : " + arr[0]);
console.log("arr[1] : " + arr[1]);
console.log("arr[2] : " + arr[2]);

Output

arr[0] : Cricket

arr[1] : undefined
arr[2] : Football

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