源代码 :
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> </head> <body> <p>回调函数等待 3 秒后执行。</p> <p id="demo"></p> <script> function print() { document.getElementById("demo").innerHTML="ossoft!"; } setTimeout(print, 3000); </script> </body> </html>
运行结果