Styled file input

index.html

<div class='file-input'>
  <input type='file'>
  <span class='button'>Choose</span>
  <span class='label' data-js-label>No file selected</label>
</div>

script.js

// Also see: https://www.quirksmode.org/dom/inputfile.html

var inputs = document.querySelectorAll('.file-input')

for (var i = 0, len = inputs.length; i < len; i++) {
  customInput(inputs[i])
}

function customInput (el) {
  const fileInput = el.querySelector('[type="file"]')
  const label = el.querySelector('[data-js-label]')
  
  fileInput.onchange =
  fileInput.onmouseout = function () {
    if (!fileInput.value) return
    
    var value = fileInput.value.replace(/^.*[\\\/]/, '')
    el.className += ' -chosen'
    label.innerText = value
  }
}

style.css

* {
  box-sizing: border-box;
}

body {
  padding: 42vh 32px;
  font-size: 14px;
  background: #eee;
  text-align: center;
}

.file-input {
  display: inline-block;
  text-align: left;
  background: #fff;
  padding: 16px;
  width: 450px;
  position: relative;
  border-radius: 3px;
}

.file-input > [type='file'] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  z-index: 10;
  cursor: pointer;
}

.file-input > .button {
  display: inline-block;
  cursor: pointer;
  background: #eee;
  padding: 8px 16px;
  border-radius: 2px;
  margin-right: 8px;
}

.file-input:hover > .button {
  background: dodgerblue;
  color: white;
}

.file-input > .label {
  color: #333;
  white-space: nowrap;
  opacity: .3;
}

.file-input.-chosen > .label {
  opacity: 1;
}

styled-file-input.markdown

Styled file input

A Pen by Rico Sta. Cruz on CodePen.

License.