Javascript Reference - HTML DOM Select add() Method

The add() method can add an option to a drop-down list.

Browser Support


`add`	Yes	Yes	Yes	Yes	Yes

Syntax

selectObject.add(option, index)

Parameter Values

Parameter	Description
option	Required. option or optgroup element to add.
index	Optional. The index position for new addec option element. Index starts at 0. If no index is specified, the new option is added at the end of the list

Return Value

No return value

Example

The following code shows how to add a "Z" option at the beginning of a drop-down list.


<!DOCTYPE html>
<html>
<body>
<!-- www .  j  a  v a 2 s.c  o m-->
<form>
<select id="mySelect" size="8">
  <option>A</option>
  <option>B</option>
  <option>C</option>
  <option>D</option>
</select>
</form>
<button type="button" onclick="myFunction()">Insert option</button>
<script>
function myFunction() {
    var x = document.getElementById("mySelect");
    var option = document.createElement("option");
    option.text = "Z";
    x.add(option, x[0]);
}
</script>
</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to add a "Z" option at index position "2" of a drop-down list.


<!DOCTYPE html>
<html>
<body>
<!--  w  w  w  .j a  va 2s  .c  om-->
<form>
<select id="mySelect" size="8">
  <option>A</option>
  <option>B</option>
  <option>C</option>
  <option>D</option>
</select>
</form>
<br>
<button type="button" onclick="myFunction()">Insert option</button>
<script>
function myFunction() {
    var x = document.getElementById("mySelect");
    var option = document.createElement("option");
    option.text = "Z";
    x.add(option, x[2]);
}
</script>
</body>
</html>

The code above is rendered as follows:

Example 3

The following code shows how to add an option before a selected option in a drop-down list.


<!DOCTYPE html>
<html>
<body>
<!--   w  w w  .ja  va2 s .  c o  m-->
<form>
<select id="mySelect" size="8">
  <option>A</option>
  <option>B</option>
  <option>C</option>
  <option>D</option>
</select>
</form>
<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 = "Z";
        var sel = x.options[x.selectedIndex];  
        x.add(option, sel);
    }
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 4

The following code shows how to add a "Z" option at the end of a drop-down list.


<!DOCTYPE html>
<html>
<body>
<!--from w  ww. j  av  a  2s .c  o  m-->
<form>
<select id="mySelect" size="8">
  <option>A</option>
  <option>B</option>
  <option>C</option>
  <option>D</option>
</select>
</form>
<br>
<button type="button" onclick="myFunction()">Insert option</button>

<script>
function myFunction() {
    var x = document.getElementById("mySelect");
    var option = document.createElement("option");
    option.text = "Z";
    x.add(option);
}
</script>

</body>
</html>

The code above is rendered as follows: