1.2.2.7.框架小叮嚀：預設值

  • library彼此間的關西是被疊成一個連續的檔案

<html>
    <head>

    </head>
    <body>

        <script src="lib1.js"></script>
        <script src="lib2.js"></script>
        <script src="app.js"></script>
    </body>
</html>

  • 有的library原始碼為了避免彼此間衝突, 會使用以下程式碼

window.libraryName = window.libraryName || "Lib 2";
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