is-def

Check if value is defined

Usage no npm install needed!

<script type="module">
  import isDef from 'https://cdn.skypack.dev/is-def';
</script>

Check if value is defined

Not null, NaN or undefined

npm install --save is-def

var isDefined = require('is-def');
isDefined(null); // false
isDefined(undefined); // false
isDefined(NaN); // false
isDefined('hello'); // true

MIT