我需要检查localStorage中是否有任何密钥此代码不起作用
if (localStorage.user === undefined) {
alert('There is no key!');
}
if (Object.keys(localStorage).length === 0) {
alert('There is no key!');
}
你需要使用getItem
if (localStorage.getItem("user") === null) {
alert('Não há chave!');
}
编辑您可以检查本地存储是否为空
if (localStorage.length == 0)