add placeholder

public/react/src/modules/developer/newOrEditTask/leftpane/editorTab/index.js

@@ -4,7 +4,7 @@
  * @Github: 
  * @Date: 2019-11-20 10:35:40
  * @LastEditors: tangjiang
- * @LastEditTime: 2019-12-20 16:12:02
+ * @LastEditTime: 2019-12-20 16:53:55
  */
 import './index.scss';
 // import 'katex/dist/katex.css';
@@ -24,17 +24,20 @@ const FormItem = Form.Item;
 const { Option } = Select;
 const maps = {
   language: [
+    { title: (<span style={{ color: 'rgba(0, 0, 0, 0.35)' }}>请选择</span>), key: '' },
     { title: 'C', key: 'C' },
     { title: 'C++', key: 'C++' },
     { title: 'Python', key: 'Python' },
     { title: 'Java', key: 'Java' }
   ],
   difficult: [
+    { title: (<span style={{ color: 'rgba(0, 0, 0, 0.35)' }}>请选择</span>), key: '' },
     { title: '简单', key: '1' },
     { title: '中等', key: '2'},
     { title: '困难', key: '3' }
   ],
   category: [
+    { title: (<span style={{ color: 'rgba(0, 0, 0, 0.35)' }}>请选择</span>), key: '' },
     { title: '程序设计', key: '1' },
     { title: '算法', key: '2'}
   ],

public/react/src/redux/actions/ojForm.js

@@ -4,7 +4,7 @@
  * @Github: 
  * @Date: 2019-11-20 16:35:46
  * @LastEditors: tangjiang
- * @LastEditTime: 2019-12-19 17:20:48
+ * @LastEditTime: 2019-12-20 16:40:42
  */
 import types from './actionTypes';
 import CONST from '../../constants';

public/react/src/redux/reducers/ojFormReducer.js

@@ -4,7 +4,7 @@
  * @Github: 
  * @Date: 2019-11-20 16:40:32
  * @LastEditors: tangjiang
- * @LastEditTime: 2019-12-17 16:19:04
+ * @LastEditTime: 2019-12-20 16:40:52
  */
 import { Base64 } from 'js-base64';
 import types from '../actions/actionTypes';
@@ -14,8 +14,8 @@ const init = {
     name: '', // 任务名称
     language: '',
     description: '',
-    difficult: 1,
-    category: 1,
+    difficult: '',
+    category: '',
     // openOrNot: 1,
     timeLimit: 3
   },