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- 毅Roger 2022-01-23
promise有多个then方法的时候会按照顺序依次执行
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- zrey 2021-08-14
new Promise( resolve => { setTimeout( ()=> { resolve('hello'); }, 2000); }).then( value => { console.log(value); //value值为'hello' return new Promise( resolve => { setTimeout( ()=> { resolve('world') }, 2000); }); }).then( value=> { //value值world console.log( value + ' world'); });- 0赞 · 1采集
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- 慕后端2065396 2021-05-02
- 按摩ex3D嗯哦哟哟9哦马3呢6我9呃呃呃
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- UFO2015 2020-11-16
return new Promise
Async/Await
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截图0赞 · 0采集
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- 慕UI5236663 2018-12-06
code-
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- cassie要早睡早起 2018-08-10
结果应该是：
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截图0赞 · 0采集
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- aSuncat 2018-05-31
一、
new Promise(resolve => { setTimeout(() => { resolve('hello'); }, 2000); }) .then(value => { console.log(value); return new Promise(resolve => { // 自己用自己的回调 setTimeout(() => { resolve('world'); }, 2000) }) }) .then(value => { console.log(value + 'world'); })- 0赞 · 0采集
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- 彈指 2018-04-10
console.log("here we go");
new Promise(resolve=>{
setTimeout(()=>{
resolve("hello");
},2000);
}).then (value=>{
console.log(value);
return new Promise(resolve=>{
setTimeout(()=>{
resolve("world");
},2000);
});
}).then(value=>{ //两个then依次执行，value=上一个then的resolve的回调“world”
console.log(value+"girl");
});
//here we go
//2s后hello
//再2s后worldgirl
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