Javascript DOM HTML Select add() Method add option before selection

Introduction

Add an option before a selected option in a drop-down list:

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<!DOCTYPE html>
<html>
<body>

<form>
  <select id="mySelect" size="8">
    <option>Apple</option>
    <option>Pear</option>
    <option>Banana</option>
    <option>Orange</option>
  </select>
</form>// ww w .jav a 2  s  .c  om
<br>
<button type="button" onclick="myFunction()">Insert option before selected</button>

<script>
function myFunction() {
  var x = document.getElementById("mySelect");
  if (x.selectedIndex >= 0) {
    var option = document.createElement("option");
    option.text = "AAA";
    var sel = x.options[x.selectedIndex];
    x.add(option, sel);
  }
}
</script>

</body>
</html>



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