How to prepopulate a sms message with html

I wanted to create a button that would open a text message on any mobile device. I realized you can create an anchor tag with an href of sms.

You can also prepopulate or fill in the text message using the body query.
Make sure you encode the text message body.

<a href="sms:+18664504185&body=Hi%2520there%252C%2520I%2527d%2520like%2520to%2520place%2520an%2520order%2520for...">Click here to text us!</a>