I am using this script to filter a table:

<http://codepen.io/chriscoyier/pen/tIuBL>

For the life of me, I cannot figure out how to get this script to only display search results when a certain number of characters are entered. Right now, it will search if any input is put into the filter box and I'm trying to get it to show results only if a minimum of three characters have been entered.

```
var limits = {
minChars: 3
}

```

I know I should probably be using jQuery for this, but this is what I am committed to at the moment.