Promise及async/await 等待某个值变为true后,才执行接下来的代码
场景:需要等待其他事件触发vuex中的方法,使得值haveGroupList改为true后,才能执行之后接下来的代码
Promise写法:
getData(){ let r = new Promise((resolve) =>{ let timer = setInterval(() =>{ if(this.haveGroupList){ clearInterval(timer) resolve(true) } },100) }) r.then((res) =>{ console.log('ddddddddddddddo somting') ... }) }
async/await 写法:
async getData(){ await new Promise( (resolve) =>{ let timer = setInterval(() =>{ if(this.haveGroupList){ clearInterval(timer) resolve(true) } },100) }) console.log('ddddddddddddddo somting') ... }