dijit.byId return undefined
It's very strange, I call dijit.byId() in dojo.addOnLoad(function{...}), it return undefined. In order to check if the id exist, i call dojo.byId() at the same time, it return some object. So I guess the component is not a dijit component? this is the whole code: Please help me, thanks in advice!
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title></title>
<!-- Dojo/Diji definations -->
<link href='../dojoroot/dijit/themes/tundra/tundra.css' type='text/css' rel='stylesheet'/>
<link href='../dojoroot/dojo/resources/dojo.css' type='text/css' rel='stylesheet'/>
<script type="text/javascript" src="../dojoroot/dojo/dojo.js" djConfig="parseOnLoad: true"></script>
<!-- Main scripts -->
<script type="text/javascript">
dojo.addOnLoad(function()
{
// Include library
dojo.require("dijit.layout.BorderContainer");
dojo.require("dijit.layout.TabContainer");
dojo.require("dijit.layout.ContentPane");
// add t开发者_运维百科he select child event to the tab panel
alert(dijit.byId("contentTabPanel")); // return no defined
alert(dojo.byId("contentTabPanel")); // return an object
});
</script>
</head>
<body class="tundra">
<div dojoType="dijit.layout.BorderContainer" style="width: 100%; height: 100%;">
<!-- Content Tab Panel -->
<div id="contentTabPanel" dojoType="dijit.layout.TabContainer" region="center">
<!-- Tab UserGroup -->
<div dojoType="dijit.layout.ContentPane" title="UserGroup">
</div>
</div>
</div>
</body>
</html>
OMFG!!!!! I know the reason!!!!! I cost 5 Hours just for this STUPID error:
I MUST write the
// Include library
dojo.require("dijit.layout.BorderContainer");
dojo.require("dijit.layout.TabContainer");
dojo.require("dijit.layout.ContentPane");
outside the dojo.addOnLoad(function() { !!!
加载中,请稍侯......
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