Enable submit button only when all fields are filled

Question

In my form, I want to enable form only when all fields (and radio button list) has been selected.

So far, I have successfully made the submit button enable

Answer 1

Here is a fiddle for you. http://jsfiddle.net/soyn0xag/6/

$("input[type='text'], textarea").on("keyup", function(){
    if($(this).val() != "" && $("textarea").val() != "" && $("input[name='category']").is(":checked") == true){
        $("input[type='submit']").removeAttr("disabled");
    } else {
        $("input[type='submit']").attr("disabled", "disabled");
    }
});

$("input[name='category']").on("change", function(){
    if($(this).val() != "" && $("textarea").val() != "" && $("input[name='category']").is(":checked") == true){
        $("input[type='submit']").removeAttr("disabled");
    } else {
        $("input[type='submit']").attr("disabled", "disabled");
    }
});