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码：
<!DOCTYPE html> <html> <body> <h1>My Web Page</h1> <p id="myPar">I am a paragraph.</p> <div id="myDiv">I am a div.</div> <p> <button type="button" onclick="myFunction()">点击这里</button> </p> <script> function myFunction() { document.getElementById("myPar").innerHTML="Hello World"; document.getElementById("myDiv").innerHTML="How are you?"; } </script> <p>会改变。</p> </body> </html>
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