Dojo fiddle

This JSFiddle is configured and ready to use for testing the Dojo framework.

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.9.1/dijit/themes/claro/claro.css">
<div dojoType="dijit.layout.TabContainer" style="width: 100%;height: 100px" tabStrip="true" onclick="getInnerDivId">
    <div dojoType="dijit.layout.ContentPane" class="one" title="First tab" selected="true" id="1" >
        11
    </div>
    <div dojoType="dijit.layout.ContentPane" class="one" title="Second tab" id="2">
        2222
    </div>
    <div dojoType="dijit.layout.ContentPane" class="one" title="Last tab" id="3">
        333333
    </div>
</div>

JavaScript

require(["dijit/layout/TabContainer", "dijit/layout/ContentPane", "dojo/parser"]);

 

function getInnerDivId() {
    var value = this.selectedChildWidget.domNode.attributes["id"].value;
    alert("get inner div iD: " + value);
}