How to add comments to html: 1. Single-line comments, in the format [..]; 2. Multi-line comments, in the format [Copy after login Description: You can tell at a glance through the comments that the title of the article is in front of it. 2. Multi-line comments Copy after login Description: When there are bugs in the code, you can use comment tags to troubleshoot! 3. Conditional comments <!-- 这是一段JavaScript代码 //--> Copy after loginRelated learning recommendations: html video tutorial