JSFiddle - React, Tailwind, and code Playground
by master1991
HTML
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="form-row">
<div class="form-group col-md-3">
<label for="clientCode">car</label>
<select class="form-control selectpicker" name="clientCode" id="clientCode" data-live-search="true" onchange="selClient(this)">
<option data-cnid="A" value="A">A</option>
<option data-cnid="B" value="B">B</option>
<option data-cnid="C" value="C">C</option>
</select>
</div>
<div class="form-group col-md-2">
<label for="agreements">sits</label>
<select class="form-control selectpicker" name="agreements" id="agreements" data-live-search="true" onchange="selAgreement(this)">
<option data-cna="1" value="1">1</option>
<option data-cna="2" value="2">2</option>
<option data-cna="3" value="3">3</option>
</select>
</div>
</div>
<div id="dataForm"></div>
<script>
function selClient(val) {
var val = val.value;
var val = encodeURI(val);
var agreements = $('#agreements option:selected').attr('data-cna');
var agr = '';
if (agreements !== undefined){
var agr = '&agreements='+agreements;
}
//$('#dataForm').load('/pages/prepare/return_form.php?clientCode='+val+''+agr);
$('#dataForm').text('/pages/prepare/return_form.php?clientCode='+val+''+agr+'');
}
function selAgreement(val) {
var val = val.value;
var val = encodeURI(val);
var clientCode = $('#clientCode option:selected').attr('data-cnid');
var cli = '';
if (clientCode !== undefined){
var cli = '&clientCode='+clientCode;
}
//$('#dataForm').load('/pages/prepare/return_form.php?agreements='+val+''+cli);
$('#dataForm').text('/pages/prepare/return_form.php?agreements='+val+''+cli+'');
}
</script>