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There are 4 different ways to create sparse arrays in JavaScript
1. Array literal: Omit a value when using the array literal
js
1const justiceLeague = ["Superman", "Aquaman", , "Batman"];
2 console.log(justiceLeague); // ['Superman', 'Aquaman', empty ,'Batman']2. Array() constructor: Invoking Array(length) or new Array(length)
js
1const array = Array(3);
2 console.log(array); // [empty, empty ,empty]3. Delete operator: Using delete array[index] operator on the array
js
1const justiceLeague = ["Superman", "Aquaman", "Batman"];
2 delete justiceLeague[1];
3 console.log(justiceLeague); // ['Superman', empty, ,'Batman']4. Increase length property: Increasing length property of an array
js
1const justiceLeague = ["Superman", "Aquaman", "Batman"];
2 justiceLeague.length = 5;
3 console.log(justiceLeague); // ['Superman', 'Aquaman', 'Batman', empty, empty]Advertisement
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