[英]Rendering react components multiple times based on cookies
因此,我试图创建一个购物车来显示保存在Cookie中的商品。 这是我所拥有的:
function safe_item(name) {
document.cookie += 'item name: ' + name + '?';
}
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"
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;
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。 虽然我需要循环此过程并从cookie中插入项目名称。
console.log(cookie)提供良好的输出,我缺少什么?
您不能多次return
。 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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