比如我后端设置延迟3s再响应给前端，我用的是node之koa2

router.get('/vueDemo/getStudents', async ( ctx ) => {    //延迟3s    async function delay(time) {        return new Promise(function(resolve, reject) {            setTimeout(function(){                resolve();            }, time);        });    };    await delay(3000);    //向后断返回数据    let st = await students.find();    ctx.response.type = 'application/json';    ctx.body = st;})

 

前端设置超时

 

 

前端设置非超时