diff --git a/Data/js/main.js b/Data/js/main.js
index cd34c6b..f637caf 100644
--- a/Data/js/main.js
+++ b/Data/js/main.js
@@ -11,9 +11,8 @@ function promiseCb(funId, promiseFun, dataParser) {
     });
 }
 /**
- * oauth login for before init internal wallet
- * @param {*} funId
- * @param {*} channel 0: google, 1: apple, 2: tiktok, 3: facebook, 4: twitter 5: tg, 6: email
+ * oauth login before init internal wallet
+ * @param {*} channel 0: google, 1: apple, 2: tiktok, 3: facebook, 4: twitter 5: tg
  */
 function walletLogin(funId, channel) {
   channel = parseInt(channel);
@@ -24,9 +23,8 @@ function walletLogin(funId, channel) {
 }
 /**
  * init internal wallet with password
- * @param {*} funId
- * @param {*} chain
- * @param {*} pass
+ * @param {number | string} chain chain id
+ * @param {string} pass
  */
 function initInternalWallet(funId, chain, pass) {
   chain = parseInt(chain);
@@ -48,7 +46,8 @@ function initInternalWallet(funId, chain, pass) {
 }
 /**
  * verify if password is correct
- * @param {*} pass
+ * compare with local password hash
+ * @param {string} pass password for wallet
  */
 function verifyPassword(funId, pass) {
   try {
@@ -60,8 +59,7 @@ function verifyPassword(funId, pass) {
 }
 /**
  * init third party wallet
- * @param {*} funId
- * @param {*} chain
+ * @param {number | string} chain chain id
  */
 function initThirdPartyWallet(funId, chain) {
   chain = parseInt(chain);
@@ -477,29 +475,54 @@ function tokenHistory(funId, start, limit, address, tokenId) {
 }
 // ======= end of transaction history =======
 
+/**
+ * get email info of current user
+ */
 function emailInfo(funId) {
   promiseCb(funId, jc.wallet.emailVerifySvr.checkEmailVerified());
 }
-
+/**
+ * send code with email
+ * @param {*} email
+ * @param {*} type
+ */
 function sendEmailCode(funId, email, type) {
-  promiseCb(funId, jc.wallet.emailVerifySvr.sendEmailCode(email, type));
+  const wallet =
+    !window.jc || !jc.wallet ? new jcwallet.default({ type: 0 }) : jc.wallet;
+  promiseCb(funId, wallet.emailVerifySvr.sendEmailCode(email, type));
 }
-
+/**
+ * verify email with code, and update email
+ * @param {*} email
+ * @param {*} code
+ */
 function verifyEmail(funId, email, code) {
   promiseCb(funId, jc.wallet.emailVerifySvr.updateEmailVerify(email, code));
 }
 
+/**
+ * check if email had already been registed
+ * @param {*} email
+ */
 function checkEmailExists(funId, email) {
-  promiseCb(funId, jc.wallet.emailVerifySvr.isEmailRegister(email));
+  const wallet =
+    !window.jc || !jc.wallet ? new jcwallet.default({ type: 0 }) : jc.wallet;
+  promiseCb(funId, wallet.emailVerifySvr.isEmailRegister(email));
 }
-
+/**
+ * regist with email
+ * @param {*} email
+ * @param {*} password
+ * @param {*} code
+ */
 function emailRegist(funId, email, password, code) {
-  promiseCb(
-    funId,
-    jc.wallet.emailVerifySvr.registByEmail(email, password, code)
-  );
+  const wallet =
+    !window.jc || !jc.wallet ? new jcwallet.default({ type: 0 }) : jc.wallet;
+  promiseCb(funId, wallet.emailVerifySvr.registByEmail(email, password, code));
 }
 
 function emailLogin(funId, email, password) {
-  promiseCb(funId, jc.wallet.emailLogin(email, password));
+  const wallet =
+    !window.jc || !jc.wallet ? new jcwallet.default({ type: 0 }) : jc.wallet;
+  promiseCb(funId, wallet.emailLogin(email, password));
 }