Javascript Reference - HTML DOM Select multiple Property

The multiple property sets or gets if the select support multiple selections.

Browser Support


`multiple`	Yes	Yes	Yes	Yes	Yes

Syntax

Return the multiple property.

var v = selectObject.multiple

Set the multiple property.

selectObject.multiple=true|false

Property Values

Value	Description
true\|false	If the drop-down list supports multiple selection true - Multiple selection is allowed false - Default. Multiple selection is not allowed

Return Value

A Boolean type value, true if the drop-down list supports multiple selection, otherwise false.

Example

The following code shows how to check if more than one option in a drop-down list can be selected.


<!DOCTYPE html>
<html>
<body>
<!--from w  w  w .j a va  2  s.c  o m-->
<select id="mySelect">
  <option>A</option>
  <option>B</option>
  <option>C</option>  
</select>
<button onclick="myFunction()">test</button>
<p id="demo"></p>

<script>
function myFunction() {
    var x = document.getElementById("mySelect").multiple;
    document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The code above is rendered as follows:

Example 2

The following code shows how to allow multiple selection in a drop-down list.


<!DOCTYPE html>
<html>
<body>
<!-- w w  w  .  ja va  2s.  co  m-->
<form>
<select id="mySelect" size="4">
  <option>A</option>
  <option>B</option>
  <option>C</option>
  <option>D</option>
</select>
</form>
<button type="button" onclick="myFunction()">test</button>
<script>
function myFunction() {
    document.getElementById("mySelect").multiple = true;
}
</script>
</body>
</html>

The code above is rendered as follows: