我是一个前端开发小白,照书上抄了一段代码
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!--meta http-equiv="X-UA-Compatible" content="ie=edge"-->
<title>Account Preferences with Dijit</title>
<br>
@import "./dojoroot/dijit/themes/tundra/tundra.css";<br>
@import "./dojoroot/dojo/resources/dojo.css";<br>
data-dojo-config="async:true,parseOnLoad:true,isdebug:true" >
<script type="text/javascript" >
dojo.require("dojo.parser");
dojo.require("dijit.layout.ContentPane");
dojo.require("dijit.layout.TabContainer");
dojo.require("dijit.form.ValidationTextBox");
dojo.require("dijit.form.DateTextBox");
dojo.require("dijit.form.Button");
</script>
明明引用了Dojo,为什么firebug 提示 dojo is not defined