使用async+await+promise 报错 PromiseStatus pending

原因，把接受数据的变量this.nav写在了调用async定义的函数外面。

错误代码

initPage: async function () {				
    let url = 'http://examp.com/api/examp';
    let params = {
		code: "",
		level: 0,
    }
    return await this.$fetch.post(url, params);  // 关键点				
},
this.nav = this.initPage();

此时，this.nav的结果就会显示 PromiseStatus pending

正确代码

initPage: async function () {				
    let url = 'http://examp.com/api/examp';
    let params = {
		code: "",
		level: 0,
    }
    this.nav = await this.$fetch.post(url, params);  // 关键点				
},
this.initPage();

除非使用.then()来接收结果

this.initPage().then(res => this.nav = res);

https://www.jianshu.com/p/aaef3ab70b8f

https://stackoverflow.com/questions/47259953/js-async-await-return-promise?r=SearchResults