Scratch 入門:Day1.關於 Scratch 3

 關於 Scratch 3Scratch 是由美國麻省理工學院媒體實驗室所開發，是一套完全免費的圖形化程式設計軟體，適合學生作為學習程式設計的入門・可以輕易設計動畫、遊戲、音樂、程式...等作品，創作完成後，也可將自己的作品與全世界分享，目前 Scratch 已在全球 150 多個國家或地區使用，並提供 60 多種語言版本。前往 Scratch：https://scratch.mit.edu/認識 Scratch 3Scratch 3 同時支援了線上及離線的操作環境。只要能連上網際網路，就能透過瀏覽器開啟 Scratch 官方網站進行創作，不需安裝任何軟體，當處於沒有網際網路連線的情況，也可以安裝 Scratch 軟體，同樣可以正常開發 Scratch ...

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如何在 Blogger 顯示程式碼

Step 1 新增 HTML / Javascript 1. 開啟 blogger 後台，點選左邊選單的 版面配置 2. 點選右方的新增小工具，選擇 HTML / Javascript 3. 在 HTML / Javascript 內容，貼上下列語法 <script src= "https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js" > </script> Step 2 將要放置的程式碼 放置在下列兩者語法之間，即可完成 <pre class="prettyprint">your code...</pre> 效果 String s = "ABC";...

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10 essential performance tips for MySQL

10 essential performance tips for MySQL MySQL performance tip No. 1: Profile your workloadMySQL 性能提示 1：分析您的工作負載 The best way to understand how your server spends its time is to profile the server's workload. By profiling your workload, you can expose the most expensive queries for further tuning. Here, time is the most important metric because when you issue a query against the server, you care very little about anything except how quickly it completes. The best way to profile your workload is with a tool such as MySQL Enterprise Monitor's query analyzer or the pt-query-digest from the Percona Toolkit. These tools capture queries the server...

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jQuery Table AddRow plugin

Enter Your Information (Max 3 Email) Email Email (function($){ $(document).ready(function(){ $(".addRow-Max3").btnAddRow({maxRow:3}); $(".delRow").btnDelRow(); }); })(jQuery); # <table border="1"> <tr><td colspan="3">Enter Your Information (Max 3 Email)</td></tr> <tr><td>Email</td><td><input type="text" size="24"/></td> <td><input type="button" class="delRow" value="Delete Row"/></td></tr> <tr><td>Email</td><td><input type="text" size="24"/></td> <td><input type="button" class="delRow" value="Delete Row"/></td></tr> <tr><td colspan="3" align="right"> <input type="button" class="addRow-Max3" value="Add Row"/></td></tr> </table> <script...

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