Auto Update Formula After User Input


I cannot figure out how to make my calculation update as the user fills in their information. This is what I have… Any help is very appreciated.



Try changing $(’#total’).text(totalPlusTip); to $(’#total’).val(totalPlusTip);

I’m assuming “total” in an input field. If that doesn’t work, please post the html that accompanies this in a codepen.


I put it up. Thanks.


I’ll try to look at it but when I started with ionic and angular I found this post to be very helpful.

Doing what you want with pure angular is a lot easier to update live then with jquery


I added a reference to jquery and it worked.

<script src=""></script>  

Also, I would recommend using angular and ionic.


haha. sorry about that