JSFiddle - React, Tailwind, and code Playground
by j08691
HTML
<!-- CHOOSE SUBJECT -->
<FORM action="/books" id="choose_subject" name="choose_subject" method="POST">
Choose a Subject:
<select name="subject_id" id="subject_id">
<option value="1">a</option>
<option value="2">a2</option>
</select><input type="submit" name="xsubmit" value="Choose Subject"/>
<BR />
</FORM>
<!-- CREATE SUBJECT -->
<FORM action="/subjects" id="create_subject" method="POST">
<BR /><BR />
Create a new Subject
<input type="text" name="subject_name" />
<input type="submit" name="submit" value="Create Subject" />
</FORM>
JavaScript
$('#subject_id').change(function(){
var subject_id = $(this).val();
//alert(subject_id)
//document.forms["choose_subject"].submit();
$('#choose_subject').submit();
//$('form#choose_subject').submit();
//$('form#choose_subject')[0].submit();
//alert(subject_id);
//document.getElementById("choose_subject").submit();
})