js 同步函数举例

写了很久c# 突然写js 用到同步函数 踩了很多坑 原理还不是很明白,但是做出来了,做记录
用的vue`
这是实际项目中用到的 带着接口的,这个接口很耗时,要等接口返回值后 根绝返回的值做后面的功能

async function test3() {
    return agencyBox.pushCertificateInfos({
        ywh: this.configData.ywh,
      }).then((res) => {
        var status = 2;
        for( let i=0;i<res.length;i++){
          let code=res[i].code;
          let msg=res[i].msg;
          let resultCode=res[i].resultCode;

          if((code === '1'&& msg.includes("该证照类型已存在编号为"))||(code === '0' && resultCode === 'A000')){
            //成功
            status = 1;
            console.log('111111');
            this.$message.success('推送电子证照成功!');

          }else if (code === '11') {
            status = 1;
            console.log('222222');
            this.$message.success('推送电子证照成功!');

          }else{
            //失败
            status = 2;
            console.log('333333');
            this.$message.warning('推送电子证照失败!');

          }
        }

        return Promise.resolve(status);

      });
    
}

async function init() {
    let success = await test3();	
    console.log('success',success);
}
init();

下面这个是可以直接跑起来做测试的 更直观

function test1() {
    return new Promise(resolve => {
        setTimeout(() => resolve("test1"), 2000);
    });
}

function test2() {
    console.log("test2");
}

async function test3() {
    const result = await new Promise(resolve => {
        setTimeout(() => resolve("test1"), 3000);
    });
    console.log(result);
	return 1
    
}

async function aaa() {
    let success = await test3();	
    console.log('success',success);
}
	
	
	
aaa()

这个是很久之前写的同步函数 也是实际项目的 具有一定的参考意义

async function asyncAwaitFn(route) {
          return await new Promise((resolve, reject) => {
            route.push({ path: '/', query: { types: types, userid: userId }})
            const routeUrl = route.resolve({
              path: '/dashboard',
              query: {
                types: types, userid: userId
              }
            })
            resolve(routeUrl)
          })
        }
        async function asyncAwaitFf(routeUrl) {
          function timer(interval) {
            var wlh = window.location.href
            if (wlh.indexOf('types') > 0 && wlh.indexOf('userid') > 0) {
              window.location.reload()
              clearInterval(interval)
            }
          }
          return await new Promise((resolve, reject) => {
            if (routeUrl.href.indexOf('types') > 0 && routeUrl.href.indexOf('userid') > 0) {
              var interval = setInterval(timer(interval), 10)
            } else {
              Cookies.set('company', company_old)
              Cookies.set('role', role_old)
              Cookies.set('entuserid', entuserid_old)
            }
          })
        }

        const serialFn = async() => { // 串行执行
          const routeUrl = await asyncAwaitFn(this.$router)
          await asyncAwaitFf(routeUrl)
        }
        serialFn()