​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>本例演示如何将 "onmousedown" 和 "onmouseup" 事件分配给 p 元素。</p>
​
<p id="demo" onmousedown="mouseDown()" onmouseup="mouseUp()">点击我.</p>
​
<script>
function mouseDown() {
  document.getElementById("demo").innerHTML = "The mouse button is held down.";
}
​
function mouseUp() {
  document.getElementById("demo").innerHTML = "You released the mouse button.";
}
</script>
​
</body>
</html>
​