It performs OR operation on the right operand with the left operand and assigns the result to the left operand.
Example
You can try to run the following code to learn how to work with Bitwise OR Assignment Operator −
<html>
<body>
<script>
var a = 2; // Bit presentation 10
var b = 3; // Bit presentation 11
document.write("(a |= b) => ");
document.write(a |= b);
</script>
</body>
</html>