浏览器后退刷新从服务器获取数据
设置缓存部分
<META HTTP-EQUIV="pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache, must-revalidate">
<META HTTP-EQUIV="expires" CONTENT="0">
js部分
<script>
if (window.name != "hasLoad") {
location.reload();
window.name = "hasLoad";
} else {
window.name = "";
}
</script>