回退按钮 页面强制刷新
if (window.name != "bencalie") { location.reload(); window.name = "bencalie"; } else { window.name = ""; }
插入到页面的加载事件中
if (window.name != "bencalie") {
location.reload();
window.name = "bencalie";
} else {
window.name = "";
}