dojo需要什么功能？

Question

// Load the dom module 
require(["dojo/dom"], function(dom){ 
}); 

我知道当dom模块被加载时调用该函数，但我不清楚函数中的代码是什么。它是我的页面上所有javascript代码的容器吗？

Answer 1

该函数是回调函数，当加载器加载所有你需要的模块时会调用它。

如果我有

require(["dojo/_base/ready", "dojo/_base/declare"], function(ready, declare) { 

    // do something with declare and ready 

}); 

AMD将会加载准备和申报。这可能需要AMD向服务器进行异步回调。一旦AMD加载模块，它会调用您传递给require方法的函数。

我的回答在Dojo Builds...? What now?有关于AMD API的更多细节。

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回答评论中的问题。以下两条语句可以位于页面上的任何位置。

<script type="text/javascript"> 
require(["dojo/_base/ready", "dojo/_base/declare"], function(ready, declare) { 
    // do something with declare and ready 
}); 
</script> 

<script type="text/javascript"> 
require(["dojo/_base/ready", "dojo/_base/declare", "dijit/form/Button"], 
    function(ready, declare, Button) { 
    // Assuming this is the second statement to be executed, AMD will 
    // realize that ready and declare have previously been loaded, 
    // so it will use the previously loaded modules, load the Button module, 
    // and then execute the callback 

    // do something with declare, ready, and Button 
}); 
</script>