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<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>