<script>
放header和End of body有甚麼差別?stylesheet
呢?<script async defer>
差別?duplicate([1,2,3,4,5]);
result:[1,2,3,4,5,1,2,3,4,5]
https://github.com/h5bp/Front-end-Developer-Interview-Questions https://github.com/Asing1001/front-end-interview https://juejin.cn/post/6844903918753808398