javascript - convert string to integer of selected option - Stack Overflow

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Hi I would like to convert the values of the selected options into integers. Unfortunately its not working.

Example HTML:

<label for="ausgangssprache">Ausgangssprache</label>
<select name="ausgangssprache" size="1" id="ausgangssprache"> <option value="0.78">Deutsch</option> <option value="0.78">Englisch</option> <option value="0.78" selected>Franz&ouml;sisch</option> <option value="0.78">Spanisch</option> <option value="0.78">Italienisch</option> <option value="1.1">Arabisch</option></select>

Javascript:

var a = document.getElementById("ausgangssprache");
var ausgangssprache = a.options[a.selectedIndex].value;

I've tried with parseInt() this both, without getting the selected value, when testing via alert()

var a = parseInt(document.getElementById("ausgangssprache"));
var ausgangssprache = a.options[a.selectedIndex].value;

var a = document.getElementById("ausgangssprache");
var ausgangssprache = parseInt(a.options[a.selectedIndex].value);

Hi I would like to convert the values of the selected options into integers. Unfortunately its not working.

Example HTML:

<label for="ausgangssprache">Ausgangssprache</label>
<select name="ausgangssprache" size="1" id="ausgangssprache"> <option value="0.78">Deutsch</option> <option value="0.78">Englisch</option> <option value="0.78" selected>Franz&ouml;sisch</option> <option value="0.78">Spanisch</option> <option value="0.78">Italienisch</option> <option value="1.1">Arabisch</option></select>

Javascript:

var a = document.getElementById("ausgangssprache");
var ausgangssprache = a.options[a.selectedIndex].value;

I've tried with parseInt() this both, without getting the selected value, when testing via alert()

var a = parseInt(document.getElementById("ausgangssprache"));
var ausgangssprache = a.options[a.selectedIndex].value;

var a = document.getElementById("ausgangssprache");
var ausgangssprache = parseInt(a.options[a.selectedIndex].value);

• javascript
• html-select
• parseint

Share Improve this question Follow edited Jul 19, 2022 at 18:27 aynber 23k99 gold badges5454 silver badges6868 bronze badges asked Mar 20, 2017 at 5:26 KrystianKrystian 98755 gold badges2323 silver badges5353 bronze badges 2

• 2 Try Number(a.options[a.selectedIndex].value); – Rayon Commented Mar 20, 2017 at 5:27
• 1 Possible duplicate of How do I convert a string into an integer in JavaScript? – Max Commented Mar 20, 2017 at 5:29

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1 Answer 1

Sorted by: Reset to default 4

var a = parseInt(document.getElementById("ausgangssprache").value);

you can use this, unless you're doing multiple select. to not use parseInt, assign value as a int like value=3 instead of value="3"

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