JSFiddle - React, Tailwind, and code Playground

by elclanrs

HTML

<div class="customfile-container">
  <label>File: </label>
  <input type="file" id="file" name="myfiles[]" multiple />
</div>

CSS

body { margin: 50px; }

/* It's easier to calculate widths 
 * with border-box layout */
.customfile-container * {
  box-sizing:border-box;
  -moz-box-sizing:border-box;
  -webkit-box-sizing:border-box;
  font: normal 14px Arial, sans-serif; /* Global font to use ems with precision */
}

.customfile-container {
  width: 300px;
  background: #FFF2B8;
  padding: 1em;
}

.customfile-container label:first-child {
  width: 100px;
  display: block;
  margin-bottom: .5em;
  font: bold 18px Arial, sans-serif;
  color: #333;
}

.customfile-wrap {
  position: relative;
  padding: 0;
  margin-bottom: .5em;
}

.customfile-filename,
.customfile-upload { 
  margin: 0;
  padding: 0;
}

.customfile-filename {
  width: 230px;
  padding: .4em .5em;
  border: 1px solid #A8A49D;
  border-radius: 2px 0 0 2px;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.2);
}
.customfile-filename:focus { 
  outline: none;
}

.customfile-upload {
  display: inline-block;
  width: 70px;
  padding: .4em 1em;
  border: 1px solid #A8A49D;
  color: #6B6863;
  background: #ddd;
  border-radius: 0 2px 2px 0;
  margin-left: -1px; /* align with input */
  cursor: pointer;
  background: #fcfff4;
  background: -moz-linear-gradient(top, #fcfff4 0%, #e9e9ce 100%);
  background: -webkit-linear-gradient(top, #fcfff4 0%, #e9e9ce 100%);
  background: -o-linear-gradient(top, #fcfff4 0%, #e9e9ce 100%);
  background: -ms-linear-gradient(top, #fcfff4 0%, #e9e9ce 100%);
  background: linear-gradient(to bottom, #fcfff4 0%, #e9e9ce 100%);
}

.customfile-upload:hover {
  background: #fafafa;
  box-shadow: 0 0 2px rgba(0,0,0,.2);
}
.customfile-upload::-moz-focus-inner { /* Fix firefox padding */
  padding: 0; border: 0 
}

JavaScript

;(function( $ ) {

  // Browser supports HTML5 multiple file?
  var multipleSupport = typeof $('<input/>')[0].multiple !== 'undefined',
      isIE = /msie/i.test( navigator.userAgent );

  $.fn.customFile = function() {

    return this.each(function() {

      var $file = $(this).addClass('customfile'), // the original file input
          $wrap = $('<div class="customfile-wrap">'),
          $input = $('<input type="text" class="customfile-filename" />'),
          // Button that will be used in non-IE browsers
          $button = $('<button type="button" class="customfile-upload">Open</button>'),
          // Hack for IE
          $label = $('<label class="customfile-upload" for="'+ $file[0].id +'">Open</label>');

      // Hide by shifting to the left so we
      // can still trigger events
      $file.css({
        position: 'absolute',
        left: '-9999px'
      });

      $wrap.insertAfter( $file )
        .append( $file, $input, ( isIE ? $label : $button ) );

      // Prevent focus
      $file.attr('tabIndex', -1);
      $button.attr('tabIndex', -1);

      $button.click(function () {
        $file.focus().click(); // Open dialog
      });

      $file.change(function() {

        var files = [], fileArr, filename;

        // If multiple is supported then extract
        // all filenames from the file array
        if ( multipleSupport ) {
          fileArr = $file[0].files;
          for ( var i = 0, len = fileArr.length; i < len; i++ ) {
            files.push( fileArr[i].name );
          }
          filename = files.join(', ');

        // If not supported then just take the value
        // and remove the path to just show the filename
        } else {
          filename = $file.val().split('\\').pop();
        }

        $input.val( filename ) // Set the value
          .attr('title', filename) // Show filename in title tootlip
          .focus(); // Regain focus

      });

      $input.on({
        blur: function() { $file.trigger('blur');...