react的 Objects are not valid as a React child (found: object with keys {name, content, time}).问题

问题原因：无法直接赋值数组到html里，需要用map等方法进行渲染

//错误方法
function App(){
    let vm = [{num:1},{num:2}]
    return (
        
{vm}
        
    )
}
//正确方法
function App(){
    let vm = [{num:1},{num:2}]
    return (
        

            {myArray.map((item,index)=>{
                {item.num}
              })}
        
   
    )
}