cookie

1. 设置cookie

function setCookie(key, val, expires) {
             let now = new Date()
             now.setDate(now.getDate() + expires)
             document.cookie = `${key}=${val};expires=${now.toUTCString()}`
         }
         

2. 获取cookie

function getCookie(key) {
            let obj = {}
            let cookies = document.cookie.split('; ')
            cookies.forEach(r => {
                let kv = r.split('=')
                let key = kv[0]
                let val = kv[1]
                obj[key] = val
            })
            if (key) return obj[key]
            return obj
        }

3. 删除cooie

function removeCookie(key) {
            setCookie(key, null, -1)
        }