提示输入内容

static/html/chat_main.html

@@ -147,7 +147,7 @@
                             <el-button :disabled="sendDisabled" size="small" class="floatRight" type="primary" v-on:click="chatToUser">发送</el-button>
                         </div>
                         <div class="clear"></div>
-                        <el-input type="textarea" class="chatArea" v-model="messageContent"  v-on:keyup.enter.native="chatToUser"></el-input>
+                        <el-input type="textarea" class="chatArea" v-model="messageContent"  v-on:keyup.enter.native="chatToUser"  placeholder="请输入内容"></el-input>
                     </div>
                 </el-col>
                 <el-col :span="6" class="chatRight">