​x
 
<!DOCTYPE html>
<html>
<body>
​
点数：<input type="range" id="myRange" value="60">
​
<p>单击该按钮可将滑块控件的值递增“1”（每次单击）。</p>
​
<button onclick="myFunction()">试一试</button>
​
<script>
function myFunction() {
  document.getElementById("myRange").stepUp();
}
</script>
​
</body>
</html>
​