if (c_start!=-1){
c_start=c_start + c_name.length+1
let c_end=document.cookie.indexOf(";",c_start)
if (c_end==-1) c_end=document.cookie.length
return unescape(document.cookie.substring(c_start,c_end))
}
}
return ""
}

export function delCookie(c_name){
setCookie(c_name,"",-1)
}

用户名存进cookie，第三个参数60为秒，意味着一分钟后cookie自动消失。一天为 86400 s this.$cookieStore.setCookie( 'username',this.username,60);