Question

I am a newbie in Dojo, and I am trying add a tooltip dialog to show more info of an item in dijit.form.MultiSelect but I have no luck so far. Thanks in advance!

Answer 1

Try this…
1. connect tooltip namespace

 dojo.require("dijit.Tooltip");

1. get all options from multiselect:

   var options = dojo.query("#fruit option"); //where 'fruit' - multiselect id

2. add tooltip for each options

   dojo.forEach(options, function (option, i) {
new dijit.Tooltip({
connectId: [option],
label: "value <b> bla bla bla </b> "+ i
});
});

See working page example