13 lines
224 B
JavaScript
13 lines
224 B
JavaScript
const pro1 = new Promise((resolve, reject) => {
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console.log('学习');
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resolve();
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});
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const pro2 = pro1.then(() => {
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return new Promise((resolve, reject) => {});
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});
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setTimeout(() => {
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console.log(pro2);
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}, 1000);
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