JavaScript Array forEach() method

The JavaScript array forEach() method is used to invoke the provided function once for each element of an array.

Syntax:

array.forEach (callback (currentvalue, index, arr), thisArg)

Parameters:
callback: It represents the method to test the condition. It is required.
currentValue: It represents array’s current element. It is required.
index: Current element index. It is optional.
arr: It represents the array on which every() method to be invoked. It is optional.
thisArg: It is used as this keyword while executing callback. It is optional.

Example:

<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script>  
var a = ["GOLD","SILVER","DIAMOND","RUBY","PLATINUM"]	 
a.forEach(function(fetch) {  
  document.writeln(fetch);  
});
</script>  
</body>
</html>

Output:

GOLD SILVER DIAMOND RUBY PLATINUM
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