The JavaScript array filter() method is used to return the new array containing the elements that pass the provided function conditions.
Syntax:
array.filter (callback (currentvalue, index, arr), thisArg)
Parameters:
callback: It represents the method to test the condition. It is required.
currentValue: It represents the array’s current element. It is required.
index: Current element index. It is optional.
arr: It represents the array on which every() method is to be invoked. It is optional.
thisArg: It is used as this keyword while executing callback. It is optional.
Returns:
A new array with filtered elements.
Example
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script>
var a = ["GOLD","SILVER","DIAMOND","RUBY","PLATINUM"]
function check(value)
{
return value > "GOLD";
}
document.writeln(a.filter(check));
</script>
</body>
</html>