defer attribute for external scripts

- LS

IE

  1. 8
  2. 9
  3. 10
  4. 11

Edge

  1. 84
  2. 85
  3. 86
  4. 87

Firefox

  1. 80
  2. 81
  3. 82
  4. 83
  5. 84
  6. 85

Chrome

  1. 84
  2. 85
  3. 86
  4. 87
  5. 88
  6. 89
  7. 90

Safari

  1. 12.1
  2. 13
  3. 13.1
  4. 14
  5. TP

Opera

  1. 69
  2. 70
  3. 71
  4. 72

iOS Safari

  1. 13.2
  2. 13.3
  3. 13.4-13.7
  4. 14.0-14.2

Opera Mini

  1. all

Android Browser

  1. 4.2-4.3
  2. 4.4
  3. 4.4.3-4.4.4
  4. 81

Opera Mobile

  1. 11.5
  2. 12
  3. 12.1
  4. 59

Chrome for Android

  1. 87

Firefox for Android

  1. 83

UC Browser for Android

  1. 12.12

Samsung Internet

  1. 10.1
  2. 11.1-11.2
  3. 12.0
  4. 13.0

QQ Browser

  1. 10.4

Baidu Browser

  1. 7.12

KaiOS Browser

  1. 2.5