bootstrap 4 file input doesn't show the file name [duplicate]

Answer 1

The answer of Anuja Patil only works with a single file input on a page. This works if there are more than one. This snippet will also show all files if multiple is enabled.

<script type="text/javascript">

    $('.custom-file input').change(function (e) {
        var files = [];
        for (var i = 0; i < $(this)[0].files.length; i++) {
            files.push($(this)[0].files[i].name);
        }
        $(this).next('.custom-file-label').html(files.join(', '));
    });

</script>

Note that $(this).next('.custom-file-label').html($(this)[0].files.join(', ')); does not work. So that is why the for loop is needed.

If you never work with mulitple files in the file upload, this simpler snippet can be used.

<script type="text/javascript">

    $('.custom-file input').change(function (e) {
        if (e.target.files.length) {
            $(this).next('.custom-file-label').html(e.target.files[0].name);
        }
    });

</script>

Answer 2

This code works for me:

<script type="application/javascript">
    $('#elementID').change(function(event){
        var fileName = event.target.files[0].name;
        if (event.target.nextElementSibling!=null){
            event.target.nextElementSibling.innerText=fileName;
        }
    });
</script>

Answer 3

This works with Bootstrap 4.1.3:

<script>
    $("input[type=file]").change(function () {
        var fieldVal = $(this).val();

        // Change the node's value by removing the fake path (Chrome)
        fieldVal = fieldVal.replace("C:\\fakepath\\", "");

        if (fieldVal != undefined || fieldVal != "") {
            $(this).next(".custom-file-label").attr('data-content', fieldVal);
            $(this).next(".custom-file-label").text(fieldVal);
        }
    });
</script>