Reactjs 检查用户是否已登录React Js

大家好，我在react项目中有一个JWT身份验证，我想做一个函数来检查用户是否登录。我的登录功能如下：

export function login(data) {
    const endpoint = '/api/auth/jwt/'
    const csrfToken = cookie.load('csrftoken')
    let thisComp = this
    if (csrfToken !== undefined) {
      let lookupOptions = {
          method: "POST",
          headers: {
              'Content-Type': 'application/json'

          },
          body: JSON.stringify(data),
          credentials: 'include'
      }

      fetch(endpoint, lookupOptions)
      .then(function(response){
          return response.json()
      }).then(function(responseData){
          console.log(responseData)
          localStorage.token = responseData.token
          localStorage.expires = responseData.expires // Store the token
          console.log("Token Stored", localStorage.token)
          console.log("Token Expires", responseData.expires)

          refreshToken(data) // Put in to the refresh function


        }).catch(function(error){

          console.log("error", error)
      })
     }
}

export function isLoggedIn() {
    // Check if we have a token stored 
    if (localStorage.token !== undefined) {
    // I also want to check if the token is still work and don't expire 
    // i have acces to the expiration date like this :
    // localStorage.token == > Token Expires 2018-06-19T14:51:59.451703Z in 
    the console 
    // How can check if the token still work ? 
    return true
    }
    return false

}

我的函数是这样的：

export function login(data) {
    const endpoint = '/api/auth/jwt/'
    const csrfToken = cookie.load('csrftoken')
    let thisComp = this
    if (csrfToken !== undefined) {
      let lookupOptions = {
          method: "POST",
          headers: {
              'Content-Type': 'application/json'

          },
          body: JSON.stringify(data),
          credentials: 'include'
      }

      fetch(endpoint, lookupOptions)
      .then(function(response){
          return response.json()
      }).then(function(responseData){
          console.log(responseData)
          localStorage.token = responseData.token
          localStorage.expires = responseData.expires // Store the token
          console.log("Token Stored", localStorage.token)
          console.log("Token Expires", responseData.expires)

          refreshToken(data) // Put in to the refresh function


        }).catch(function(error){

          console.log("error", error)
      })
     }
}

export function isLoggedIn() {
    // Check if we have a token stored 
    if (localStorage.token !== undefined) {
    // I also want to check if the token is still work and don't expire 
    // i have acces to the expiration date like this :
    // localStorage.token == > Token Expires 2018-06-19T14:51:59.451703Z in 
    the console 
    // How can check if the token still work ? 
    return true
    }
    return false

}

---

您不能检查存储在本地存储中的expires属性并将其与当前日期进行比较吗

其他处理方法：将过期日期存储在令牌本身中，然后使用jwt解码库对令牌进行解码并从中提取。如果您使用的是刷新令牌，您只需等待服务器返回401未经授权的响应，然后发送刷新令牌以请求新的响应