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<!DOCTYPE html> <html> <body> <h1>Demo: typeof operator</h1> <p id="p1">typeof obj: </p> <p id="p2">typeof bool: </p> <p id="p3">typeof num: </p> <p id="p4">typeof jsObj: </p> <p id="p5">typeof undefined: </p> <p id="p6">typeof null: </p> <script> function myFunc(){ } var obj = new myFunc (); var bool = false; var num = 100; var jsObj = {}; var undef; var nullObj = null; document.getElementById("p1").innerHTML += typeof obj; document.getElementById("p2").innerHTML += typeof bool; document.getElementById("p3").innerHTML += typeof num; document.getElementById("p4").innerHTML += typeof jsObj; document.getElementById("p5").innerHTML += typeof undef; document.getElementById("p6").innerHTML += typeof nullObj; </script> </body> </html>
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