The size
accessor property returns the number of (unique) elements in a Set
object.
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Description
The value of size
is an integer representing how many entries the Set
object has. A set accessor function for size
is undefined
; you cannot change this property.
Examples
Using size
var mySet = new Set();
mySet.add(1);
mySet.add(5);
mySet.add('some text')
mySet.size; // 3
Specifications
Browser compatibility
BCD tables only load in the browser