How to zoom the chart drawn by canvas

use canvas to draw a chart, but how to implement an adaptive browser

Mar.02,2021

canvas's view and browser view ratio convert


listen to the onresize event of the browser, set the width and height of the container according to the size of the browser window, and redraw

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e96515-15c9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e96515-15c9.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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