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November 27, 2016 16:45
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Preview uploaded image and converting it into a base64 string
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>Image to Base64</title> | |
| </head> | |
| <body> | |
| <style> | |
| body { | |
| text-align: center; | |
| } | |
| .file-input{ | |
| padding: 10px; | |
| margin: 10px; | |
| } | |
| .view-box { | |
| height: 400px; | |
| } | |
| .view-image { | |
| width: 49%; | |
| float: left; | |
| } | |
| .view-image img{ | |
| max-width: 100%; | |
| } | |
| .image-data { | |
| float: right; | |
| width: 49%; | |
| height: 100%; | |
| } | |
| .image-data:after { | |
| display: block; | |
| clear: both; | |
| } | |
| </style> | |
| <div class="file-input"> | |
| <input type="file" accept="image/*" data-selector="change-image" /> | |
| </div> | |
| <div class="view-box"> | |
| <div class="view-image" data-selector="view-image">Chose image</div> | |
| <textarea class="image-data" data-selector="image-data"></textarea> | |
| </div> | |
| <script> | |
| const changeImage = document.querySelector('[data-selector="change-image"]'); | |
| const viewImage = document.querySelector('[data-selector="view-image"]'); | |
| const imageData = document.querySelector('[data-selector="image-data"]'); | |
| changeImage.addEventListener('change', onchangeFile); | |
| function onchangeFile(ev){ | |
| viewImage.innerHTML = ''; | |
| viewImage.innerHTML = 'loading...'; | |
| let img = new Image(); | |
| let reader = new FileReader(); | |
| reader.onload = function (e) { | |
| img.src = e.target.result; | |
| imageData.value = e.target.result; | |
| } | |
| img.onload = function () { | |
| viewImage.innerHTML = ''; | |
| viewImage.appendChild(img); | |
| }; | |
| reader.readAsDataURL(changeImage.files[0]); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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