JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Upload image:</h1>
<input type="file" name="blog[opload]" id="blog_opload" class="imagec">
<input type="url" size="50" name="blog[url]" id="blog_url" class="imagec">
<div id="preview">
</div>

CSS

html {font-family:verdana;}
#preview {border:1px solid black;height:200px;width:200px;display:none;}

#preview img {height:200px;width:200px;}

JavaScript

$('input').change(function() {
    var el = $(this);
    if (this.value === "") {
        $('.imagec').prop('disabled', false);
        this.disabled = false;
        $('#preview').hide();
    } else {
        $('.imagec').prop('disabled', true);
        el.prop('disabled', false);
        alert(el.val());
        if (el.attr('type') == 'url') {
            $('#preview').show().html('<img src=' + '"' + el.val() + '"' + ' />');
        }
    }
});

function reset_html(id) {
    $('#' + id).html( $('#' + id).html() );

}

var imagec_index = 0;
    $('input[type=file]').each(function() {
    imagec_index++;
    $(this).wrap('<div id="imagec_' + imagec_index + '"></div>');
    $(this).after('<input type="button" value="Clear" onclick="reset_html(\'imagec_' + imagec_index + '\')" />');
});