Arrays in JavaScript will store heterogeneous values.
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Create an array:
const nameOfArray = [item1, item2, ...];
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Accessing the elements:
const avengers = ["Ironman", "Thor", "Thanos", 3000]; let avenger = avengers[0];
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Add element to the array:
avengers.push("Captain"); //add at the end avengers[0] = "Captain"; //index based adding
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Properties and Methods:
avengers.length // returns the number of avengers avengers.sort() // sorts the avengers avengers.indexOf("ironman") // return index value of ironman avengers.pop() // delete last indexed value of avengers
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NOTE:adding elements with high indexes can create undefined values in an array.