== and === difference in javascript code example
Example 1: difference between == and === in javascript
0 == false // true
0 === false // false, because they are of a different type
1 == "1" // true, automatic type conversion for value only
1 === "1" // false, because they are of a different type
null == undefined // true
null === undefined // false
'0' == false // true
'0' === false // false
Example 2: === in js
<!DOCTYPE html>
<html>
<body>
<p id="demo"></p>
<script>
var x = abc;
document.getElementById("demo").innerHTML = (x === "ABC");
</script>
</body>
</html>