7-如何中断Promise链
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<head>
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<title>Document</title>
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<script>
let p = new Promise((resolve, reject) => {
setTimeout(() => {
resolve("Ok");
}, 1000);
});
p.then((value) => {
console.log(111);
// 中断Promise链只有一个方式,返回一个状态为pending状态的Promise,当then方法的返回值是pending的时候后面的then和catch方法都不会执行
return new Promise((resolve, reject) => {});
})
.then((value) => {
console.log(222);
})
.then((value) => {
console.log(333);
})
.catch((reason) => {
console.log(reason);
});
</script>
</body>
</html>
