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in Technique[技术] by (71.8m points)

JS如何让一个function在请求之后再返回值?

function checkToken(token: string) {
    let flag:boolean = false;
    if (Cookies.get('token')) {
            Reqwest({
                url: 'token/check'
            }).then(res=> {
                flag = true
            }).fail((res) => {
                flag = false;
            })
            return flag;
    } else {
        flag = false;
    }
    console.log('checkToken flag', flag);
    return flag
 
}

大概能看懂吧,就是里面有个请求来根据返回值确定token是否有效。然后现在的问题是,此函数先return再执行reqwest,我想在reqwest请求之后,次函数再返回,怎么搞? 同时reqwest返回的是一个proimise。


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0 votes
by (71.8m points)

既然你都说了里面有Promise对象了,也就涉及异步编程,就继续返回一个Promise对象,在外部对这个返回的Promise进行判断操作


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