feat:add showPwd

src/views/login/index.vue

         <span class="svg-container">
           <svg-icon icon-class="password"></svg-icon>
         </span>
-        <el-input name="password" type="password" @keyup.enter.native="handleLogin" v-model="loginForm.password" autoComplete="on"
+        <el-input name="password" :type="pwdType" @keyup.enter.native="handleLogin" v-model="loginForm.password" autoComplete="on"
           placeholder="password"></el-input>
+          <span class="show-pwd" @click="showPwd"><svg-icon icon-class="eye" /></span>
       </el-form-item>
       <el-form-item>
         <el-button type="primary" style="width:100%;" :loading="loading" @click.native.prevent="handleLogin">
         username: [{ required: true, trigger: 'blur', validator: validateUsername }],
         password: [{ required: true, trigger: 'blur', validator: validatePass }]
       },
-      loading: false
+      loading: false,
+      pwdType: 'password'
     }
   },
   methods: {
+    showPwd() {
+      if (this.pwdType === 'password') {
+        this.pwdType = ''
+      } else {
+        this.pwdType = 'password'
+      }
+    },
     handleLogin() {
       this.$refs.loginForm.validate(valid => {
         if (valid) {
       font-size: 16px;
       color: $dark_gray;
       cursor: pointer;
+      user-select:none;
     }
     .thirdparty-button{
       position: absolute;