通俗易懂直接上代码：
先了解下promise
let p1 = new Promise((resolve, reject) => {
resolve('成功了')
})
let p2 = new Promise((resolve, reject) => {
resolve('success')
})
let p3 = Promse.reject('失败')
Promise.all([p1, p2]).then((result) => {
console.log(result) //['成功了', 'success']
}).catch((error) => {
console.log(error)
})
Promise.all([p1,p3,p2]).then((result) => {
console.log(result)
}).catch((error) => {
console.log(error) // 失败了，打出 '失败'
})
实际中调用代码使用：
getDate(){
let p1 = new Promise(resolve => {
request.projectChartCalculationWork().then(({ r }) => { //调用后台接口
resolve(r)
})
})
let p2 = new Promise(resolve => {
request.formInterfacesPrdOperatingNum_kl({}).then(({ r }) => {
resolve(r)
})
})
Promise.all([p1, p2]).then(res => {
console.log(res[0]) // P1结果
console.log(res[1]) // P2结果
})
}
注意：错误返回reject需要自己加上
