how to set data with form input

Asked Jun 25 '19 at 19:01

Active Jun 25 '19 at 19:04

Viewed 214 times

I can't manage to take over input values from the selection in a calculation. What am I doing wrong?

Depending on your selection it should take over the number of the 'car' and use it for the calculation formula.

<select name="car">
  <option value="9">Volvo</option>
  <option value="8">Saab</option>
  <option value="7">Fiat</option>
  <option value="6">Audi</option>
</select>

<form onsubmit="return false" oninput="amount.value = apple.valueAsNumber + cherry.valueAsNumber + apple.valueAsNumber + cherry.valueAsNumber * car.valueAsNumber">
  <input type="number" min="0" id="apple" name="apple" value="0"></p>
  <input type="number" min="0" id="cherry" name="cherry" value="0"></p>
  <input type="number" min="0" id="car" value="0" name="car"></p>
  <output name="amount" for="cherry apple car">0</output>
</form>

edited Jun 25 '19 at 19:04

j08691

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asked Jun 25 '19 at 19:01

humptydumpty11

Do you know order of operations? Is the multiplication supposed to only be on the last one? – epascarello Jun 25 '19 at 19:06
https://stackoverflow.com/questions/1085801/get-selected-value-in-dropdown-list-using-javascript – epascarello Jun 25 '19 at 19:08
get the value like document.getElementById('car').options[document.getElementById('car').selectedIndex].value – Saqib Jun 25 '19 at 19:21

how to set data with form input

0 Answers0