tuiyijunren/src/main/resources/static/js/register/header-index.js

// JavaScript Document
var showState = false;
$(function () {
    $.post("/getInfo", function (data) {
        var obj = eval(data);
        showState = obj.status;
        if (showState) {
            $("#exit").prepend(obj.nickname).show();
        } else {
            $("#login").show();
        }
    });
});