xxxxxxxxxx<html><head><meta charset="utf-8"><title>W3Cschool教程(w3cschool.cn)</title></head><body><p>点击按钮，显示确认框。</p><button onclick="myFunction()">点我</button><p id="demo"></p><script>function myFunction(){ var x; var r=confirm("按下按钮!"); if (r==true){ x="你按下了\"确定\"按钮!"; } else{ x="你按下了\"取消\"按钮!"; } document.getElementById("demo").innerHTML=x;}</script></body></html>