# Testing Array Elements in JavaScript

There are so many functions in JavaScript, especially in arrays, that it can be hard to keep track of all of them. You may not have used `every` before, but it is a simple way to ensure each element in the array passes a test.

The array method returns a `truthy` value if each element passes the check inside the provided function or a `falsy` value if one or more fail.

```javascript
const users = [
  {id: 1, name: "Alexander", created: 2015},
  {id: 2, name: "Orhan", created: 2023},
  {id: 3, name: "Akshaya", created: 2023}
]

const startedBefore2024 = users.every(user => {
  return user.created < 2024
})
console.log(startedBefore2024) // true
```

```javascript
const students = [
    { name: 'Alice', age: 21, hasPassed: true },
    { name: 'Bob', age: 19, hasPassed: false },
    { name: 'Charlie', age: 20, hasPassed: true },
    { name: 'Emily', age: 22, hasPassed: false }
];

const allStudentsPassed = students.every(student => {
    return student.hasPassed === true;
});
console.log(allStudentsPassed);  // false
```

As you can see `every` is super simple to use and saves you from having to use a custom filter, reduce or for loop. There is support in every major browser for `every` so start using it today. You can find the full [browser breakdown here](https://caniuse.com/mdn-javascript_builtins_array_every).