[Solved] create a new array from an existing array at specific indexes

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You can use array.slice and array.join

const array = ["john", "mark", "sally", "adam", "rick"]

const newArray = array.slice(0, 3);
console.log(newArray);

const newString = newArray.join('');
console.log(newString);

solved create a new array from an existing array at specific indexes