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Doing a calculation based on the entries made by a user in two seperate form fields - possible?

Thread began 5/13/2015 12:41 pm by Nathon Jones Web Design | Last modified 5/20/2015 4:28 pm by Nathon Jones Web Design | 1244 views | 5 replies

Nathon Jones Web Design

Doing a calculation based on the entries made by a user in two seperate form fields - possible?

My client has asked for a form where the user selects values from a drop down menu. Those values have a monetary value, for example

Rental Fee:
<input type="text" value"350">

Number of Pets:
<option value="1">1</option>
<option value="2">2</option>

Insurance Required:
<option value="1">Yes</option>
<option value="0">No</option>

Pets are charged at £15.00 each and the insurance is £16.00 so, in the above example, if a user selects 2 pets and insurance I need it to add £46.00 (2 x £15.00 and 1 x £16.00) to the Rental Fee value (£350).

Is this possible via validation? Show If?

Would appreciate your advice. Thank you.

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