JavaScript DHTML/Dojo toolkit/byId

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Add action to tag by using dojo.byId("id")

 
<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/"
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script language="JavaScript" type="text/javascript">
      function setup() {
        dojo.byId("outerDiv").onclick = doOuterClick;
        dojo.byId("innerDiv").onclick = doInnerClick;
      }
      function doOuterClick(e) {
        alert("out");
      }
      function doInnerClick(e) {
        alert("inner");
        dojo.stopEvent(e);
      }
    </script>
  </head>
  <body onLoad="setup();">
    <div id="outerDiv">
      outer
      <div id="innerDiv">
        inner
      </div>
    </div>
  </body>
</html>



Get Element by id

 
<html>
  <head>
    <script type="text/javascript">
      var djConfig = {
        baseScriptUri : "js/dojo/"
      };
    </script>
    <script type="text/javascript" src="js/dojo/dojo/dojo.js"></script>
    <script>
      function testIt() {
        alert(dojo.isDescendant(dojo.byId("div3"), dojo.byId("div1")));
      }
    </script>
  </head>
  <body onLoad="testIt();">
    <span id="div1"></span>
    <span id="div2"><span id="div3"></span></span>
  </body>
</html>