How to set priority for executing functions inside an event

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ASP.NET

Javascript

Ajax

jQuery

I have a button click event like this, I want to execute 'each function' before 'CategoryCombo(count)'

$('body').on('click', '.btnEdit', function () {

    $(".DetailsTB tr").each(function () {
      ......
    });

    CategoryCombo(count);

}

What I have tried:

$('body').on('click', '.btnEdit', function () {

$(".DetailsTB tr").each(function () {
......
});

CategoryCombo(count);

}