Android 错误：var是保留字-反应本机

我在React Native中创建了一个简单的ListView。我得到一个错误，如图所示。我在网上搜索，但找不到相关的帖子。代码如下所示

import React, {Component} from "react";
import {StyleSheet, View, AppRegistry, ListView, Text} from "react-native";

class dhrumil extends Component{

constructor(props){
super(props);
this.state = {
var ds = new ListView.DataSource({rowsHasChanged : (r1,r2) => r1!==r2})
return {
dataSource: ds.cloneWithRows(["1","2","3","4","5"])
};
}
}

_renderer(rowData){
  return <Text>{rowData}</Text>;
}

render(){
return(
<ListView
dataSource = {() => this.state.dataSource}
renderRow = {() => this._renderer()}
/>
);


}

}
AppRegistry.registerComponent("dhrumil",()=>dhrumil);

---

如何解决它？

您在构造函数中编写了错误的编码

constructor(props) {
    super(props);
    var ds = new ListView.DataSource({rowsHasChanged : (r1,r2) => r1!==r2})
    this.state = {
        dataSource: ds.cloneWithRows(["1","2","3","4","5"])
    };
}

---

您的对象文字语法错误。。