Tag:color

  • The fastest way to implement a color picker (color eyedropper) in Chrome

    Time:2022-11-2

    When it comes to the implementation method of the web page color picker (color eyedropper tool) in the front end, we usually think of doing it first.webpage Screenshot, then viaCanvasDraw a screenshot, at this time useCanvasThe provided API can parse out the color of each pixel of the image, and finally obtain themouse positioning, get […]

  • Real-time highlighting of stdout log logs

    Time:2022-10-29

    Development and debuggingstdout logLogs are highlighted in real time Highlight In fact, it is to search for specific keywords and replace them with ANSI escape code Regular replacement,perl -pe ‘s/<pattern>;/<replacement>;/g’ egrepkeyword replacementegrep “fatal|error|warning|info|debug” -A10 -B10 –color=auto The way perl can specify different colors for different keywords, egrep custom color estimation is very troublesome. Cooperate with […]