diff --git a/public/init.html b/public/init.html
index 945dd83..396df5a 100644
--- a/public/init.html
+++ b/public/init.html
@@ -150,87 +150,6 @@
     }
   }
 </style>
-<script>
-  var ajax = (function () {
-    'use strict'
-    function t(e) {
-      return (
-        (t =
-          'function' == typeof Symbol && 'symbol' == typeof Symbol.iterator
-            ? function (t) {
-                return typeof t
-              }
-            : function (t) {
-                return t && 'function' == typeof Symbol && t.constructor === Symbol && t !== Symbol.prototype
-                  ? 'symbol'
-                  : typeof t
-              }),
-        t(e)
-      )
-    }
-    var e = 'GET',
-      n = encodeURIComponent
-    function o(t, o) {
-      switch (
-        ((function (t) {
-          var o = t.data,
-            r = t.method === e
-          if (Object.keys(o).length && r) {
-            var a = []
-            for (var s in o) Object.prototype.hasOwnProperty.call(o, s) && a.push(n(s) + '=' + n(o[s]))
-            ;(t.url += /\?$/.test(t.url) ? '' : '?'), (t.url += a.join('&'))
-          }
-        })(o),
-        t.open(o.method, o.url, o.async, o.username, o.password),
-        (function (t, e) {
-          for (var n in e.headers) t.setRequestHeader(n, e.headers[n])
-        })(t, o),
-        o.method)
-      ) {
-        case e:
-          t.send()
-          break
-        case 'POST':
-          t.send(JSON.stringify(o.data))
-      }
-    }
-    return function (n) {
-      return n
-        ? new Promise(function (r, a) {
-            'object' !== t(n) && (n = { url: n })
-            var s,
-              u = new XMLHttpRequest(),
-              c = Object.assign({ method: e, async: !0, data: {}, headers: {} }, n)
-            ;(c.method = c.method.toUpperCase()),
-              o(u, c),
-              c.timeout &&
-                (s = setTimeout(function () {
-                  return u.abort()
-                }, c.timeout)),
-              (u.onreadystatechange = function () {
-                try {
-                  if (4 === u.readyState)
-                    s && clearTimeout(s),
-                      u.status >= 200 && u.status < 300
-                        ? r(
-                            (function (t) {
-                              try {
-                                return JSON.parse(t)
-                              } catch (e) {
-                                return t
-                              }
-                            })(u.responseText)
-                          )
-                        : a(u)
-                } catch (t) {
-                  a(t)
-                }
-              })
-          })
-        : n
-    }
-  })()
-</script>
 
 <div class="init">
   <div class="title">Init Discuss</div>
@@ -279,16 +198,10 @@
       }
 
       submit.setAttribute('disabled', '')
-      data = await ajax({
-        url: location.href,
-        method: 'post',
-        data: {
-          type: 'INIT',
-          mail,
-          username,
-          password
-        }
-      })
+      const body = JSON.stringify({ type: 'INIT', mail, username, password })
+      const response = await fetch(location.href, { method: 'post', body })
+      data = await response.json()
+
       msg.style.display = 'block'
       msg.innerText = data.msg