http://sinhviencntt.net/hoc-javascript-bai-12-cac-kieu-du-lieu-trong-javascript/http://sinhviencntt.net/hoc-javascript-bai-12-cac-kieu-du-lieu-trong-javascript/

http://sinhviencntt.net/hoc-javascript-bai-12-cac-kieu-du-lieu-trong-javascript/

by sinhviencntt

HTML

<!DOCTYPE html>
<html>
<body>
 
<p id="demo1"></p>
<p id="demo2"></p>
 
<script>
var check1 = (30 == 30);
document.getElementById("demo1").innerHTML = check1;
 
var check2 = (30 == 50);
document.getElementById("demo2").innerHTML = check2;
</script>
 
</body>
</html>