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<!DOCTYPE html> <html> <body> <h1>Demo: instanceof operator</h1> <p id="p1">stringObj instanceof String = </p> <p id="p2">str instanceof String = </p> <script> var stringObj = new String(); var str = "this is str"; document.getElementById("p1").innerHTML += stringObj instanceof String; document.getElementById("p2").innerHTML += str instanceof String; </script> </body> </html>
Result: