When interviewing front-end engineers in Internet companies, one of the first fundamental questions that will be mentioned is about W3C and T3C international Web standards

W3C International Standard

The main purpose is to put forward standardized requirements for WEB standards

  1. On the overall structure of the project, it requires

    (1) Label letters should be lowercase; (2) The label should be closed; (3) Labels are not allowed to be nested randomly.Copy the code

  2. Requirements for CSS and JS include

    (1) The external CSS style sheet and JS script, improve the page rendering speed (2) less use of inter-line style sheets, tag ID and class name to do see the text, the less tag, the faster loading (3) high reproducability of the pageCopy the code