Text Inputs

To create a replace-as-you-type inputs, which disallow certain characters.

Each of these inputs disallows the typing of certain characters. To test, try copying the text below and pasting it several times into each input.

abc\&;,/~2.10.01!@<£è

Textarea

To create a textarea which expands as you type.

Usability: Any 'replace-as-you-type' method should be used sparingly, but it is much better than popping up an alert while they type.
Dependencies: jQuery
Browser Support: IE9+, Edge, Firefox, Chrome.
Size: 2k

See the Pen Inputs with restricted values by btn.ninja (@btn-ninja) on CodePen.