湖濱散記部落格的樹心幽徑[<a href=login.php>login</a>][<a href= . >主頁</a>]<hr>
728:20211216用JavaScript在網頁canvas(畫布)物件上繪圖<br><table width=800 border=8><tr><td bgcolor=cyan><H3>上課文件下載：<a href="uploads/20211225jscANVAS.odt">20211225jscANVAS.odt</a>
</a>

<br>網頁程式1a連結：<a href="uploads/20211228LOAe4.htm">用JS在畫布繪螺線：20211228LOAe4.htm</a>
<br>網頁程式1b連結：<a href="uploads/20211228LOA.htm">用JS在畫布繪螺線：20211228LOA.htm</a>
<br>網頁程式1c連結：<a href="uploads/20211217jsDraw.htm">用JS在畫布繪圖：20211217jsDraw.htm</a>
<br>網頁程式1d連結：<a href="uploads/20211227draw1.htm">用JS在畫布繪圖：uploads/20211227draw1.htm</a>
<br>網頁程式2連結：<a href="uploads/20211221jsDraw2.htm">用JS在畫布按方向鍵來移動小狗:20211221jsDraw2.htm</a>
<br>網頁程式3連結：<a href="uploads/jsDraw.htm">jsDraw.htm</a>
<br>參考JS繪圖： <a href="https://developer.mozilla.org/zh-TW/docs/Web/API/Canvas_API/Tutorial/Basic_usage">
https://developer.mozilla.org/zh-TW/docs/Web/API/Canvas_API/Tutorial/Basic_usage</a>
<br><img src="uploads/blackdog.png" width=300></table><br> select id,article_id,topic,text from lt_articles_text where article_id =728; ok.
update lt_articles set num_reads=num_reads +1 where id=728; ok.