Insert default option to the drop downs using jQuery

There are some cases where we need to add dynamically a default value to the dropdowns. A simple code snippet which enters default option to all the dropdown inside a container :

//Used to insert default value for the dropdowns
function InsertFirstOptionToDropdowns(divId) {

//Find all the select and add span
$("#divContainer").find('select').each(function () {
$(this).prepend("<option value='' selected='selected'>Please Select</option>");
});

}

cheers