8.html 682 B

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <meta charset="UTF-8">
  5. <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6. <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7. <title>Document</title>
  8. </head>
  9. <body>
  10. <script>
  11. /*
  12. 1. 首先执行所有的微任务
  13. 2. 执行宏任务
  14. 3. 再次执行新添加进来的微任务
  15. 4. 执行下一个宏任务
  16. */
  17. const timer1 = setTimeout(() => {
  18. console.log(1)
  19. const promise1 = Promise.resolve().then(() => {
  20. console.log('promise1')
  21. })
  22. }, 0)
  23. const timer2 = setTimeout(() => {
  24. console.log('timer2')
  25. }, 0)
  26. </script>
  27. </body>
  28. </html>