## 使用方法 1:打开`/usr/themes/handsome/404.php`,在第`130行`左右,在`<h1 class="text-shadow text-white">404</h1>`后面添加: ``` <br> <small class="text-muted letterspacing"> <b id="sp">10</b>秒后自动返回···<br> <a class="text-muted letterspacing" href="#" onclick="javascript:history.go(-1);">立刻返回</a> ``` 2:然后把下面这段放到最后的`</body>`前 ``` <script type="text/javascript"> onload = function(){setInterval(go, 1000);};var x=10; function go() {x--;if(x>0) {document.getElementById("sp").innerHTML = x;}else{history.go(-1);}} </script> ```