Dropdown Element

Dropdown Element — CometChat documentation.

The DropdownElement class is used to create a dropdown selection element in a user interface.

Constructor

Name	Type	Description
elementId	string	Accepts the ID for the element in the constructor
label	string	Accepts the label for dropDown in the constructor
options	Array<OptionElement>	Accepts options for dropDown in the constructor

Class Usage

Here’s an example of how you can create an instance of the DropdownElement class:

TypeScript

let option1 = new OptionElement("Option 1", "1");

let option2 = new OptionElement("Option 2", "2");

let optionsList = [option1, option2];

let dropdownElement = new DropdownElement("1", "Choose an option", optionsList);

In this example, a new instance of DropdownElement is created with an elementId “1”, a label “Choose an option”, and a list of two options.

Key Properties and Methods

Default Value of the Input Element

The setDefaultValue() method sets the default value in the dropdown input, while the getDefaultValue() retrieves it.

For example:

TypeScript

dropdownElement.setDefaultValue("1");

Example

Here is an example that showcases the creation and manipulation of an instance of DropdownElement:

TypeScript

// Create some options

let option1 = new OptionElement("Option 1", "1");

let option2 = new OptionElement("Option 2", "2");

let optionsList = [option1, option2];

// Create a new instance of DropdownElement

let dropdownElement = new DropdownElement("1", "Choose an option", optionsList);

// Set and get the default value

dropdownElement.setDefaultValue("1");