onchange on select tag
<select id="comboA" onchange="getComboA(this)"> <option value="">Select combo</option> <option value="Value1">Text1</option> <option value="Value2">Text2</option> <option value="Value3">Text3</option> </select>
Source: stackoverflow.com
onchange js
<script> document.getElementById("fname").addEventListener("change", myFunction); function myFunction() { var x = document.getElementById("fname"); x.value = x.value.toUpperCase(); } </script>
onchange html
<element onchange="myFunction()"> <!--Runs JS function when html element is changed. Example:--> <select onchange="console.log("Changed")"> <!-- Outputs "Changed" when select element option is changed! -->