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根据Cookie多次渲染组件

[英]Rendering react components multiple times based on cookies

so I'm trying to create a shooping cart that displays items saved in cookies. 因此,我试图创建一个购物车来显示保存在Cookie中的商品。 Here is what I have: 这是我所拥有的:

function safe_item(name) {
document.cookie += 'item name: ' + name + '?';
}

This function is called by onClick event, but I guess it does not matter since my console.log(document.cookie.split('?')) returns data properly: 该函数由onClick事件调用,但是我想没关系,因为我的console.log(document.cookie.split('?'))正确返回数据:

0: "item name: Blekk BROTHER LC1000 Value Pack"
1: "item name: Blekk BROTHER LC1000 Value Pack"
2: "item name: Blekk BROTHER LC1000Y gul"
3: "item name: Blekk BROTHER LC1100 Value sort+CMY (4)"
4: "item name: Blekk BROTHER LC1000 Value Pack"
5: "item name: Blekk BROTHER LC1280XLC blå"
6: "item name: Blekk BROTHER LC1280XLM rød"
7: "item name: Blekk BROTHER LC1280XLC blå"
8: "item name: Blekk BROTHER LC1280XLC blå"
9: "item name: Blekk BROTHER LC1280XLM rød"

Now, I want to render component with item names from cookies: 现在,我想使用Cookie中的项目名称来呈现组件:

let cookie = document.cookie.split('?');

function InCart() {
for (let i = 0; i < cookie.length; i++) {
return (
  <ItemInCart>
      <InCartFont>{cookie[i].item name}</InCartFont>
      <CartRemove>
        <CartX>x</CartX>
        <br></br>
        remove
      </CartRemove>
    </ItemInCart>
  )
  }
  }

  export default InCart;

When I run my app it renders as expected, but only once and empty. 当我运行我的应用程序时,它会按预期呈现,但只有一次且为空。 While I need to loop this process and insert item names from cookies. 虽然我需要循环此过程并从cookie中插入项目名称。

console.log(cookie) gives good output, what am I missing? console.log(cookie)提供良好的输出,我缺少什么?

You can't return multiple times. 您不能多次return Use a single return with map() instead: 使用带有map()的单return代替:

function InCart() {

return (
<div>
{ cookies.map( cookie =>
  (<ItemInCart>
      <InCartFont>{cookie.item name}</InCartFont>
      <CartRemove>
        <CartX>x</CartX>
        <br></br>
        remove
      </CartRemove>
    </ItemInCart>)
</div>
  ))
  }
  }

  export default InCart;

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