diff --git a/demo/demolist/Demo30.js b/demo/demolist/Demo30.js
index e1235e1..47c2017 100644
--- a/demo/demolist/Demo30.js
+++ b/demo/demolist/Demo30.js
@@ -10,7 +10,57 @@ import Tooltip from "bee-tooltip";
 import Table from "../../src";
 import BigData from "../../src/lib/bigData";
 const BigDataTable = BigData(Table);
-
+const columns = [
+    {
+        title:'序号',
+        dataIndex:'index',
+        width:'50',
+        render:(text,record,index)=>{
+            return index
+        },
+        fixed:'left'
+    },
+    {
+    title: "用户名", dataIndex: "a", key: "a", width: 580, className: "rowClassName",
+    render: (text, record, index) => {
+      return (
+        <Tooltip inverse overlay={text}>
+          <span tootip={text} style={{
+            display: "inline-block",
+            width: "80px",
+            textOverflow: "ellipsis",
+            overflow: "hidden",
+            whiteSpace: "nowrap",
+            verticalAlign: "middle",
+          }}>{text}</span>
+        </Tooltip>
+      );
+    }
+  },
+  { id: "123", title: "性别", dataIndex: "b", key: "b", width: 80},
+  { title: "年龄", dataIndex: "c", key: "c", width: 200 },
+  {
+    title: "操作",
+    dataIndex: "d",
+    key: "d",
+    fixed:'right',
+    render(text, record, index) {
+      return (
+        <div style={{ position: 'relative' }} title={text} >
+          <a
+            href="javascript:;"
+            tooltip={text}
+            onClick={() => {
+              alert('这是第' + index + '列，内容为:' + text);
+            }}
+          >
+            一些操作
+              </a>
+        </div>
+      );
+    }
+  }
+];
 
 const data = [ ...new Array(10000) ].map((e, i) => {
     const rs = { a: i + 'a', b: i + 'b', c: i + 'c', d: i + 'd', key: i };
@@ -22,106 +72,30 @@ const data = [ ...new Array(10000) ].map((e, i) => {
 
 
 class Demo30 extends Component {
-  
+
   constructor(props) {
     super(props);
-    const _this = this;
     this.state = {
       data: data,
-      selectedRowIndex: 0,
-      currentIndex:-1
+      selectedRowIndex: 0
     }
-    this.columns = [
-      {
-          title:'序号',
-          dataIndex:'index',
-          width:'50',
-          render:(text,record,index)=>{
-              return index
-          },
-          fixed:'left'
-      },
-      {
-      title: "用户名", dataIndex: "a", key: "a", width: 580, className: "rowClassName",
-      render: (text, record, index) => {
-        return (
-          <Tooltip inverse overlay={text}>
-            <span tootip={text} style={{
-              display: "inline-block",
-              width: "80px",
-              textOverflow: "ellipsis",
-              overflow: "hidden",
-              whiteSpace: "nowrap",
-              verticalAlign: "middle",
-            }}>{text}</span>
-          </Tooltip>
-        );
-      }
-    },
-    { id: "123", title: "性别", dataIndex: "b", key: "b", width: 80},
-    { title: "年龄", dataIndex: "c", key: "c", width: 200 },
-    {
-      title: "操作",
-      dataIndex: "d",
-      key: "d",
-      fixed:'right',
-      render(text, record, index) {
-      
-        return (
-          <div style={{ position: 'relative' }} title={text} >
-            <a
-              href="javascript:;"
-              tooltip={text}
-              onClick={() => {
-                alert(record.key+'这是第' + index + '列，内容为:' + text);
-              }}
-            >
-             {record.key+'这是第' + index}
-                </a>
-                <button onClick={_this.del(record,index) }>删除</button>
-          </div>
-        );
-      }
-    }
-  ];
   }
- 
-  add=()=>{
-    let {currentIndex} = this.state;
-    let data = this.state.data;
-    const key = data.length;
-    
-    data.push({a: key + 'a', b: key + 'b', c: key + 'c', d: key + 'd', key: key});
-    currentIndex = data.length
-    this.setState({data,currentIndex});
-  }
-  del=(record,index)=>(record,index)=>{
-    
-    let data = this.state.data;
-    data.splice(index,1);
 
-    this.setState(data);
-  }
   render() {
-   const {currentIndex} = this.state;
     return (
-      <div>
-        <button onClick = {this.add}>增加</button>
         <BigDataTable
-          columns={this.columns}
+          columns={columns}
           data={data}
-          parentNodeId='parent'
           scroll={{y:300}}
-          currentIndex = {currentIndex}
           height={40}
           onRowClick={(record, index, indent) => {
             console.log('currentIndex--'+index);
           }}
         />
-</div>
+
      
     );
   }
 }
 
-export default Demo30;
+export default Demo30;
\ No newline at end of file