Development Log - June

June 1, 2026

  • Suddenly noticed most people watching this page will mostly be English speakers, or at least more comfortable in English.
  • So I decided to write my development logs in English from now on. Also translated previous logs into English and updated them.

June 3, 2026

  • Learned about rowspan and colspan attributes in <td> tags. Former one combines multiple columns into one cell, and the latter combines multiple rows into one cell.

June 6, 2026

  • Studied <col> and <colgroup> tag. These tags are used to select columns in a table. Span and style attributes can be used to specify the appearance of the selected columns.
  • Studied <img> tag and its attributes. This part was quite hard to understand at first because I couldn't fully grasp the concept of DPR (Device Pixel Ratio).
    Multiple bulbs can be used to light up one physical pixel of the image. So, for example, if you have a 100x100 pixel image and a device with a DPR of 2, the image will be displayed as 50x50 pixels on the screen, but it will still use all 100x100 pixels of the image file to ensure it looks sharp on high-resolution displays.
    This would be really helpful because the web page I created before had problem with image rendering on high-resolution devices.
  • Studied <figure> and <figcaption> tags. These tags are used to group an image with a caption.