# PHP's is_finite in JavaScript

Here’s what our current JavaScript equivalent to PHP's is_finite looks like.

1 | module.exports = function is_finite (val) { // eslint-disable-line camelcase |

## How to use

You you can install via `npm install locutus`

and
require it via `require('locutus/php/math/is_finite')`

.
You could also require the `math`

module in full
so that you could access `math.is_finite`

instead.

If you intend to target the browser, you can then use a module bundler such as Browserify, webpack or rollup.js.

## ES5/ES6

This function targets ES5, but as of Locutus 2.0.2 we also support ES6 functions. Locutus transpiles to ES5 before publishing to npm.

## A community effort

Not unlike Wikipedia, Locutus is an ongoing community effort. Our philosophy follows The McDonald’s Theory. This means that we don't consider it to be a bad thing that many of our functions are first iterations, which may still have their fair share of issues. We hope that these flaws will inspire others to come up with better ideas.

This way of working also means that we don't offer any production guarantees, and recommend to use Locutus inspiration and learning purposes only.

## Examples

Please note that these examples are distilled from test cases that automatically verify our functions still work correctly. This could explain some quirky ones.

# | code | expected result |
---|---|---|

1 | `is_finite(Infinity)` | `false` |

2 | `is_finite(-Infinity)` | `false` |

3 | `is_finite(0)` | `true` |