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<html><body><h1>The Document Object</h1><h2>The getElementById() Method</h2><p id="demo"></p><script>document.getElementById("demo").innerHTML = "Hello World";</script></body></html><html><body><h1>The Document Object</h1><h2>The getElementById() Method</h2><p id="demo"></p><script>document.getElementById("demo").innerHTML = "Hello World";</script></body></html>