How to preview multiple images before uploading it to server?
Previewing multiple images before uploading them to the server can be achieved using JavaScript and the HTML5 **FileReader**
API. Here's an example:
- Add an input element for file selection: In your HTML file, add an input element with a type of
**file**
and the**multiple**
attribute that allows the user to select multiple image files:
<input type="file" id="imageInput" multiple>
- Add an image container element: Add a container element to your HTML file that will be used to display the previews of the selected images:
<div id="imagePreviewContainer"></div>
- Attach a change event to the input element: In your JavaScript file, attach a change event to the input element that triggers when the user selects files:
document.querySelector('#imageInput').addEventListener('change', function () {
previewImages(this);
});
- Implement the
**previewImages**
function: Implement the**previewImages**
function that uses the**FileReader**
API to read the selected image files and add image elements to the image container element to display the previews:
function previewImages(input) {
document.querySelector('#imagePreviewContainer').innerHTML = '';
for (var i = 0; i < input.files.length; i++) {
var reader = new FileReader();
reader.onload = function (e) {
var img = document.createElement('img');
img.setAttribute('src', e.target.result);
document.querySelector('#imagePreviewContainer').appendChild(img);
};
reader.readAsDataURL(input.files[i]);
}
}
By following these steps, you should be able to preview multiple images before uploading them to the server. The image previews are achieved by using the **FileReader**
API to read the contents of the selected image files and adding image elements to the image container element to display the previews.
@abcd 1 days ago
Aquí los que apoyamos a Los del limit desde sus inicios..