add Method (Set) (JavaScript)

Adds a new element to a set.

Syntax

setObj.add(value)  

Parameters

setObj
Required. A Set object.

value
Required. New element of the Set.

Remarks

The new element can be of any type and must be unique. If you add a non-unique element to a Set, the new element will not be added to the collection.

Example

The following example shows how to add members to a set and then retrieve them.

var s = new Set();  
s.add("Thomas Jefferson");  
s.add(1776);  
s.add("founding father");  

s.forEach(function (item) {  
    document.write(item.toString() + ", ");  
});  

// Output:  
// Thomas Jefferson, 1776, founding father,  

Requirements

Supported in the Internet Explorer 11 standards document mode. Also supported in Store apps (Windows 8.1 and Windows Phone 8.1). See Version Information.
Not supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards. Not supported in Windows 8.