Question

I’m looking for a command to clean the beginning of content inside my form

but I would like to preserve last elements (that are some buttons (tag a)

$('#Detail form').not('a').html('');

is not working

Answer 1

You need to select the children of the form, and then remove the a elements from the collection:

$('#Detail form').children().not('a').remove();

Note that I’ve used remove, which will actually remove any elements that are not a elements from the DOM. If you don’t want that, then you can replace the call to remove with your call to html, which will simply remove all content from those elements.

Your current code will select all form elements that are descendants of #Detail and then try to remove all a elements from the collection. Since you have only selected form elements, there are obviously not going to be any a elements to remove!