javascript 使用 onShow 和 onLoad 为 dijit.layout.ContentPane 创建程序化
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using onShow and onLoad for dijit.layout.ContentPane created programatic
提问by noru
I have a ContentPane created both declarative and programmatic.
我有一个 ContentPane 创建了声明性和程序性。
Declarative :
声明：
<div dojoType="dijit.layout.ContentPane" id="abccp" href="abc.php?id=1" title="abc" onShow="do_abc()">
Programmatic
程序化
var obj_abc;
var abchref= "abc.php?id=1";
obj_abc = new dijit.layout.ContentPane({id:'abccp',title:'abc', href:abchref});
How can I call do_abc() in the programmatic ex
如何在程序化前调用 do_abc()
回答by Ken Franqueiro
To be technically equivalent to your first example, you'd just include onShow: do_abcwithin the arguments object passed to ContentPane's constructor. (Note no parentheses after do_abc- we're interested in the function object itself, not the result of calling it!)
为了在技术上等同于您的第一个示例，您只需onShow: do_abc在传递给 ContentPane 构造函数的参数对象中包含。（注意后面没有括号do_abc——我们对函数对象本身感兴趣，而不是调用它的结果！）
However, if you'd like to do it in a bit more extensible of a fashion, then I'd suggest doing it like this:
但是，如果您想以更具可扩展性的方式进行操作，那么我建议您这样做：
obj_abc = new dijit.layout.ContentPane(...);
obj_abc.connect(obj_abc, 'onShow', do_abc);
What this does is perform a hookup such that whenever obj_abc's onShowmethod is called, the do_abcfunction will in turn be called (though in the context of obj_abc, which presumably is what you want anyway). You also get the following added bonuses:
它的作用是执行一个连接，这样无论何时调用obj_abc的onShow方法，该do_abc函数都会被调用（尽管在 的上下文中obj_abc，这大概是您想要的）。您还将获得以下额外奖励：
- It no longer clobbers any default functionality that might be originally present in the method (though in this case,
onShowis a stub meant to be clobber-able) - You can connect any number of functions to
onShowin this way - The connection will automatically be torn down when the widget is destroyed (as opposed to
dojo.connectwhich you would have to tear down manually).
- 它不再破坏方法中最初可能存在的任何默认功能（尽管在这种情况下，它
onShow是一个可以破坏的存根） - 您可以通过
onShow这种方式连接任意数量的功能 - 当小部件被销毁时，连接将自动断开（与
dojo.connect您必须手动拆卸相反）。
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