maybe I should expand a little more (general JS experience, not AngularJS)

<div class="input-group" style="margin-top: 20px;" ng-keyup="function(e){if ((e.which || e.keyCode) === 13 /*enter*/ && $(this).find('input').val().length ) doSimpleSearch(simpleSearch)}">

>>>Why it doesn't work in the Modal form?
>>>
>>>Thanks in advance.
>>
>>I think you need to wrap in a form with ng-submit to get that behaviour ?
>
>Hi Viv,
>
>Last night I was thinking exactly the same thing. I'll try first Thierry's suggestion and then may try yours if that will not work.