Count empty input field[]?

Answer 1

$('#uploadimages input:file[value=""]').length

Answer 2

Accepted approach of Murtaza unfortunatelly doesn't work for me. I don't know why. https://jsfiddle.net/7vLrhqyw/

This works:

$(".count").click(function () {
    var count=0;
    $('#uploadimages input:file').each(function(){
       if($(this).val()=="")count++; 
    });
    alert(count);

});

Answer 3

Working with your example

<ul id="uploadimages">
    <li><input type="file" name="gallery[]" id="upload1"/></li>
    <li><input type="file" name="gallery[]" id="upload2"/></li>
    <li><input type="file" name="gallery[]" id="upload3"/></li>
    <li><input type="file" name="gallery[]" id="upload4"/></li>
</ul>

<input type="button" value="click" class="count"/>

Script in document.ready

$(".count").click(function(){
var count = $('#uploadimages input:file[value=""]').length
alert(count);

})