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<!DOCTYPE html> <html> <body> <h1>演示如何访问滑块控件</h1> <input type="range" id="myRange" value="90"> <p>单击按钮可获取滑块控件的值。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myRange").value; document.getElementById("demo").innerHTML = x; } </script> </body> </html>