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<!DOCTYPE html> <html> <body> <h1>JavaScript Objects</h1> <h2>The Object.hasOwn() Method</h2> <p>Check if a property is the own property of an object:</p> <p id="demo"></p> <script> const proto = { initProp: 500, }; const obj = { __proto__: proto, }; let text = "" text += ("initProp" in obj) + " "; text += ("initProp" in proto) + " "; text += Object.hasOwn("initProp") + " "; document.getElementById("demo").innerHTML = text; </script> </body> </html>
