app/static/js/password.js

@@ -1,14 +0,0 @@
-function containsDigitsLettersSpecialCharacters(s) {
-    let resultD = 0, resultL = 0, resultS = 0;
-
-    // Digit test
-    resultD = /\d/.test(s);
-
-    // Letter test
-    resultL = /[a-zA-Z]/.test(s);
-
-    // Special character test
-    resultS = /[!@#$%^&*(),.?":{}|<>]/.test(s);
-
-    return resultD + resultL + resultS == 3;
-}

app/templates/signup.html

@@ -24,10 +24,6 @@ You're logged in already! <a href="/logout">Logout</a>.
                 alert('密码过于简单。(密码长度至少4位)');
                 return false;
             }
-            if (!containsDigitsLettersSpecialCharacters(password)) {
-            alert('密码过于简单。(密码要包括数字，字母，特殊符号)');
-            return false;
-            }
             $.post("/signup", {'username': username, 'password': password},
                 function (response) {
                     if (response.status === '0') {