I know this is very basic question but
Is this a good practice although code works fine?
I'm working on mvc project and i just need to confirm wether it is a good practice to do this or not?
code .cshtml
$(document).ready(function () {
    var serviceURL = '/AjaxTest/FirstAjax';
    if(serviceURL = null ) { alert ("BANG! error")}
    else {
        $.ajax({
                type: "POST",
                url: serviceURL,
                data: param = "",
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: successFunc,
                error: errorFunc
        });
    }
}
please share your comments.