ASP.NET MVC5 - JavaScriptillä EditorFor arvo toisesta EditorFor-kentästä

how-can-i-get-value-of-editorfor-and-assign-this-value-to-another-editorfor 

$(document).ready(function () {
    $("#projectName").blur(function(){
        $("#identifier").val($(this).val());
        alert($("#identifier").val())
    });
});