The forEach() function of the Set object accepts the name of a particular function and runs that function for every value in the current set. For Example, if you have written a function to print a value, if you use forEach() function it prints the value of every element in the set.
Syntax
Its Syntax is as follows
setObj.forEach()
Example
<html>
<head>
<title>JavaScript Example</title>
</head>
<body>
<script type="text/javascript">
function sampleFunction(value){
document.writeln(value+",");
}
const setObj1 = new Set();
setObj1.add('Java');
setObj1.add('JavaFX');
setObj1.add('JavaScript');
setObj1.add('HBase');
setObj1.forEach(sampleFunction);
document.write("<br>");
var sum = 0;
function mathExample(value) {
sum = value+sum;
//document.write(value);
}
const setObj2 = new Set();
setObj2.add(172);
setObj2.add(364);
setObj2.add(885);
setObj2.add(746);
setObj2.forEach(mathExample);
document.write("Sum of all elements in the set: "+sum);
</script>
</body>
</html>Output
Java, JavaFX, JavaScript, HBase, Sum of all elements in the set: 2167