I've already covered in another article the [Javascript every method](https://hackernoon.com/the-array-every-method-in-javascript). It's useful for when checking if every element matches a certain criteria. The `some` method differs in that it checks if only 'some' elements pass a criteria. If some do, then the expression will return `true` overall. For this function, `some` means anything more than 1 - so if even one element matches the criteria you define, the expression will return true.

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**Let's look at an example:**

```javascript
let myArray = [ 5, 10, 15, 20, 25, 30 ]
let checkArray = myArray.some((x) => (x / 5) > 3)
// Returns true, since some elements, when divided by 5, return a number greater than 3
console.log(checkArray)
```

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The `some` method takes one callback function, which can have 3 different arguments:

* `element` - the element being iterated over. In the example above, I've named it `x`.
* `index` - the index of array element we are iterating over currently.
* `array` - the entire original array.

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`some` works like a loop - it loops over every element and checks if the callback function you gave returns true for any of them. `element` and `index` let us check each element individually in our function, while `array` gives us easy access to the original array. Here is an example with all three:

```javascript
let myArray = [ 5, 10, 15, 20, 25, 30 ]
let checkArray = myArray.some((el, index, array) => {
    if(el / 5 > 3 && index > 4 && array.length === 6) {
        return true
    }
})
// Returns true since all checks are true for "some" elements
console.log(checkArray)
```

If one element in `some` passes the test, then the function will stop - meaning it is quite an efficient way of testing if `some` array elements pass certain tests.

## One Line statements with some

Earlier, you might have noticed we did this:

```javascript
let myArray = [ 5, 10, 15, 20, 25, 30 ]
let checkArray = myArray.some((x) => (x / 5) > 3)
// Returns true, since some elements, when divided by 5, return a number greater than 3
console.log(checkArray)
```

... and even though we did not `return` true, the statement is still true. That is because one line functions when defined without curly brackets will return the result of a statement automatically. In this case, `(x / 5) > 3` is returned by default, resulting in `true`.

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Also published [here.](https://fjolt.com/article/javascript-array-some)

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Pocket Guide to Javascript Array Some Method

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