fix bug

@@ -9,7 +9,7 @@
             </label>
         </li>
         <li>
-            <label>昵称<input class="nickname" v-model='nickname' @blur="setNickname"></label>
+            <label>昵称<input class="nickname" v-model='nickname' @input="setNickname" @change="checkNickname"></label>
         </li>
         <li>
             <label @click="setAender">性别
@@ -53,14 +53,19 @@
             setAvatar: function() {
                 yoho.goSetAvatar();
             },
-            setNickname: function() {
+            checkNickname: function() {
                 if (!this.nickname) {
                     tip('昵称不能为空');
                     this.nickname = this.currentval;
                     return false;
                 }
-
                 this.currentval = this.nickname;
+            },
+            setNickname: function() {
+                if (!this.nickname || this.currentval === this.nickname) {
+                    return false;
+                }
+
                 this.saveDetails({
                     nickname: this.nickname
                 });