如何访问对象Javascript中的元素？

Question

以下是对象

Object {
  "index": 0,
  "item": Object {
    "-1509965540253": "Hey Blade Runner!!",
    "fName": "Gaston Day Public School",
    "fromName": "Gaston Day Public School",
    "message": "HEy ! Full metal jacket !",
    "time": -1509967894467,
  },
  "separators": Object {
    "highlight": [Function highlight],
    "unhighlight": [Function unhighlight],
    "updateProps": [Function updateProps],
  },
}

我想在以下功能中访问fromName

renderInboxList= (item) =>{
 console.log("FromName",item.fromName);
  return (
        <TouchableOpacity key={item.fromId} onPress={() => {console.log("TOmoving to chat thread");navigate('ChatThread', { fromId: `${l.fromId}` });}}>
              <ListItem
                key={item.fromId}
                leftIcon={{ name: 'user-circle-o', type: 'font-awesome', style: {color: 'blue'} }}
                title={item.fromName}
                titleStyle={{color: 'red'}}
                subtitle={item.message}
                rightTitle={item.time}
                rightTitleStyle={{color: 'green'}}

                />
                </TouchableOpacity>);
              }

item.fromName给了我undefined。

Answer 1

请使用：

var fromName = item.item.fromName;