代码示例:(标识:jsck_oper_modequal)
<!DOCTYPE html>
<html>
<body>

<p>x = 10 且 y = 5,计算 x %= y,并显示 x:</p>

<button onclick="myFunction()">试一试</button>

<p id="demo"></p>

<script>
function myFunction() {
  var x = 10;
  var y = 5;
  x %= y;
  document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>
运行结果: