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js array index

const beasts = ['ant', 'bison', 'camel', 'duck', 'bison'];

console.log(beasts.indexOf('bison'));
// expected output: 1

// start from index 2
console.log(beasts.indexOf('bison', 2));
// expected output: 4

console.log(beasts.indexOf('giraffe'));
// expected output: -1
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array index javascript

let fruits = ['Apple', 'Banana']
let first = fruits[0]
// Apple

let last = fruits[fruits.length - 1]
// Banana
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index javascript array

Index Javascript
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