Select multiple Property

Allow multiple selection in a drop-down list:

document.getElementById("mySelect").multiple = true;

Description

The multiple property sets or returns whether more than one option/item can be selected from a drop-down list.

Property
multiple	Yes	Yes	Yes	Yes	Yes

Return the multiple property:

selectObject.multiple

Set the multiple property:

selectObject.multiple = true|false

Value	Description
true\|false	Specifies whether more than one option in a drop-down list can be selected true - Multiple selection is allowed false - Default. Multiple selection is not allowed

Return Value:	A Boolean, returns true if multiple selection in the drop-down list is enabled, otherwise it returns false

Find out if more than one option in a drop-down list can be selected:

var x = document.getElementById("mySelect").multiple;