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JavaScript

var ages = [32, 33, 16, 40];
// kiểm tra tất cả các phần tử trong mảng ages thoả điều kiện >= 18
function checkAdult(age) {
    return age >= 18;
}
alert(ages.every(checkAdult)); // false vì 16 < 18

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JSFiddle - React, Tailwind, and code Playground

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