The Javascript TypedArray filter() method is used to form a new array that falls under a given criteria from an existing array.
Syntax:
array.filter (function (currentValue, index, arr), thisArg)
Parameters:
currentValue: It represents the current element’s value.
index: It represents the index position of the current element.
arr: It represents the array on which filter() is called.
thisArg: It represents this argument for the function.
Returns:
A new array with all the elements that satisfy a given condition.
Example 1:
<!DOCTYPE html>
<html>
<body>
<script type="text/javascript">
function func(i)
{ return i>= "O";
}
var Jewels = ["DIAMOND","GOLD","PLATINUM","SILVER"];
var gems =Jewels.filter(func);
document.write(gems);
</script>
</body>
</html>
Example 2:
<!DOCTYPE html>
<html>
<body>
<script type="text/javascript">
function isNegative(element, index, array) {
return element < 0;
}
const testArray = new Int8Array([-16, 45, 456, 40, -47]);
const negTestArray = testArray.filter(isNegative);
document.write(negTestArray);
</script>
</body>
</html>