[英]Uncaught Error:Objects are not valid as a React child (found: object with keys.If you meant to render a collection of children, use an array instead
[英]Uncaught Error: Objects are not valid as a React child (found: object with keys {todo}). If you meant to render a collection of children, use an array
我目前正在做一個 mern 應用程序,我遇到了以下問題
我正在調用我的 API,它給了我一個數組,當我嘗試通過它 map 時,它給出了一個錯誤
我正在接收一個數組,在那個數組里面,里面還有另一個數組,我需要那個數組的信息,但是我不能使用 map function
在這里,我正在嘗試 map 陣列
import React from "react";
import { TodoMain, Todo, Close, CloseIcon, TaskContainer } from "./ToDoStyled";
import { useSelector, useDispatch } from "react-redux";
const ToDo = ({ setTodo, idRoom, setIdRoom }) => {
const handleTodo = () => {
setTodo(false);
setIdRoom("");
document.body.style = "overflow: auto";
};
const user = JSON.parse(localStorage.getItem("profile"));
const todo = useSelector(state => state.tasks);
console.log(todo);
return (
<div>
<TodoMain>
<Todo>
<Close>
<CloseIcon onClick={handleTodo} />
</Close>
<TaskContainer>
{todo.map((task) => {
return (
<div key={task._id}>
<h1>{task.task}</h1>
</div>
);
})}
</TaskContainer>
</Todo>
</TodoMain>
</div>
);
};
export default ToDo;
這就是數據的樣子,我需要獲取這些信息,但我不知道如何
我在這 5 個小時內嘗試了一切,試圖改變數據的結構,試圖改變后端的行為,這樣我就可以以不同的方式將數據發送到數據庫,但這實際上是迄今為止唯一的方法接收數據,我被困在這個:7
您可以訪問該數組的方式,在映射到第一個數組之后,它是 map
import React from "react";
import { TodoMain, Todo, Close, CloseIcon, TaskContainer } from "./ToDoStyled";
import { useSelector, useDispatch } from "react-redux";
const ToDo = ({ setTodo, idRoom, setIdRoom }) => {
const handleTodo = () => {
setTodo(false);
setIdRoom("");
document.body.style = "overflow: auto";
};
const user = JSON.parse(localStorage.getItem("profile"));
const todo = useSelector(state => state.tasks);
console.log(todo);
return (
<div>
<TodoMain>
<Todo>
<Close>
<CloseIcon onClick={handleTodo} />
</Close>
<TaskContainer>
{todo.map((data) => {
const {task,_id} = data
return (
<div key={_id}>
{task.map((stuff)=>{
const {todo,name,room} = stuff
return(
<h1 style={{color: 'white'}} >{todo}</h1>
)
})}
</div>
);
})}
</TaskContainer>
</Todo>
</TodoMain>
</div>
);
};
export default ToDo;
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