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image-upload.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Image Upload</title>
<style>
body {
margin: 0;
display: flex;
flex-direction: column;
align-items: center;
font-family: sans-serif;
}
button {
margin-top: 1rem;
border: none;
padding: 0.75rem 1.5rem;
border-radius: 1.25rem;
font-size: 1rem;
color: white;
background-color: hsl(216, 80%, 53%);
}
button:hover {
background-color: hsl(216, 80%, 60%);
}
button:active {
background-color: hsl(216, 80%, 68%);
}
button:disabled {
background-color: hsl(0, 0%, 70%);
}
.file-input {
display: none;
}
.images-div {
width: 70%;
}
.image-div {
position: relative;
margin-top: 1rem;
display: flex;
justify-content: center;
align-items: center;
border-radius: 0.75rem;
box-shadow: 0 0.25rem 0.5rem 0 rgba(0, 0, 0, 0.4);
}
.image-div img {
width: 100%;
border-radius: 0.75rem;
}
.del-img-btn {
z-index: 1;
margin: 0;
padding: 0;
position: absolute;
top: 0.75rem;
right: 0.75rem;
background-color: hsl(0, 100%, 50%);
width: 2rem;
height: 2rem;
border-radius: 1rem;
}
.del-img-btn.hidden {
display: none;
}
.del-img-btn:hover {
background-color: hsl(0, 100%, 65%);
}
.del-img-btn:active {
background-color: hsl(0, 100%, 75%);
}
.del-img-btn div {
position: absolute;
top: 50%;
left: 50%;
width: 1rem;
height: 0.25rem;
background-color: white;
}
.del-img-btn div:first-child {
transform: translate(-50%, -50%) rotateZ(-45deg);
}
.del-img-btn div:last-child {
transform: translate(-50%, -50%) rotateZ(45deg);
}
.overlay {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
border-radius: 0.75rem;
background-color: rgba(0, 0, 0, 0.6);
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
text-align: center;
}
.overlay .message {
color: white;
margin-top: 0.75rem;
}
.uploading-spinner {
width: 5rem;
height: 5rem;
border: 0.75rem solid rgba(39, 116, 231, 0.2);
border-left-color: rgb(39, 116, 231);
border-radius: 50%;
animation: load 1s infinite linear;
}
@keyframes load {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.error-overlay button {
width: 50%;
}
.cancel-btn {
background-color: hsl(0, 100%, 50%);
}
.cancel-btn:hover {
background-color: hsl(0, 100%, 65%);
}
.cancel-btn:active {
background-color: hsl(0, 100%, 75%);
}
.success-icon {
position: relative;
width: 5rem;
height: 5rem;
background-color: hsl(120, 68%, 44%);
border: 0.75rem solid hsl(120, 68%, 44%);
border-radius: 50%;
}
.success-checkmark {
background-color: white;
position: absolute;
width: 3.5rem;
height: 2rem;
top: 50%;
left: 50%;
transform: translate(-48%, -60%) rotateZ(-45deg);
}
.success-checkmark div {
background-color: hsl(120, 68%, 44%);
position: absolute;
bottom: 1rem;
left: 1rem;
width: 2.7rem;
height: 1.2rem;
}
.file-upload-btn {
margin-bottom: 2rem;
}
</style>
</head>
<body>
<button class="file-input-btn" onclick="chooseImages()">
Choose images to upload
</button>
<input class="file-input" type="file" accept="image/*" multiple />
<div class="images-div"></div>
<button class="file-upload-btn" onclick="uploadImages()" disabled>
Upload images
</button>
<script>
const fileInputBtn = document.querySelector('.file-input-btn')
const fileInput = document.querySelector('.file-input')
const imagesDiv = document.querySelector('.images-div')
const fileUploadBtn = document.querySelector('.file-upload-btn')
const chooseImages = () => fileInput.click()
let currentId = 1
const nextId = () => 'image-' + currentId++
const removeCurrentOverlay = (imageElement) => {
imageElement.lastChild.remove()
const delImgBtn = imageElement.querySelector('.del-img-btn')
delImgBtn.classList.remove('hidden')
}
const addOverlay = (imageElement, overlayElement) => {
const delImgBtn = imageElement.querySelector('.del-img-btn')
delImgBtn.classList.add('hidden')
imageElement.appendChild(overlayElement)
}
const addUploadingOverlay = (imageElement) => {
const uploadingOverlay = document.createElement('div')
uploadingOverlay.classList.add('overlay', 'uploading-overlay')
const uploadingSpinner = document.createElement('div')
uploadingSpinner.classList.add('uploading-spinner')
uploadingOverlay.appendChild(uploadingSpinner)
const uploadingMessage = document.createElement('div')
uploadingMessage.classList.add('message')
uploadingMessage.innerText = 'Uploading...'
uploadingOverlay.appendChild(uploadingMessage)
addOverlay(imageElement, uploadingOverlay)
}
const addSuccessOverlay = (imageElement) => {
const successOverlay = document.createElement('div')
successOverlay.classList.add('overlay', 'success-overlay')
const successIcon = document.createElement('div')
successIcon.classList.add('success-icon')
const successCheckmark = document.createElement('div')
successCheckmark.classList.add('success-checkmark')
successCheckmark.appendChild(document.createElement('div'))
successIcon.appendChild(successCheckmark)
successOverlay.appendChild(successIcon)
const successMessage = document.createElement('div')
successMessage.classList.add('message')
successMessage.innerText = 'Upload successful'
successOverlay.appendChild(successMessage)
imageElement.appendChild(successOverlay)
}
const addErrorOverlay = (imageElement) => {
const errorOverlay = document.createElement('div')
errorOverlay.classList.add('overlay', 'error-overlay')
const errorMessage = document.createElement('div')
errorMessage.classList.add('message')
errorMessage.innerText = 'Failed to upload image.'
errorOverlay.appendChild(errorMessage)
const retryBtn = document.createElement('button')
retryBtn.innerText = 'Try again'
retryBtn.onclick = () => {
removeCurrentOverlay(imageElement)
uploadImage(imageElement)
}
retryBtn.classList.add('retry-btn')
errorOverlay.appendChild(retryBtn)
const cancelBtn = document.createElement('button')
cancelBtn.innerText = 'Cancel'
cancelBtn.onclick = () => deleteImage(imageElement)
cancelBtn.classList.add('cancel-btn')
errorOverlay.appendChild(cancelBtn)
addOverlay(imageElement, errorOverlay)
}
const deleteImage = (imageElement) => {
imageElement.remove()
if (!imagesDiv.childElementCount) {
fileInputBtn.disabled = false
fileUploadBtn.disabled = true
}
}
let totalUploaded = 0
let failOnEvery = 3
let uploadDelayMs = 1000
const uploadImage = (imageElement) => {
addUploadingOverlay(imageElement)
const shouldFail = ++totalUploaded % failOnEvery == 0
if (!shouldFail) {
setTimeout(() => {
removeCurrentOverlay(imageElement)
addSuccessOverlay(imageElement)
}, uploadDelayMs)
} else {
setTimeout(() => {
removeCurrentOverlay(imageElement)
addErrorOverlay(imageElement)
}, uploadDelayMs)
}
}
const uploadImages = () => {
fileInputBtn.disabled = true
fileUploadBtn.disabled = true
imagesDiv.childNodes.forEach(uploadImage)
}
const addImage = (url) => {
const id = nextId()
const imageElement = document.createElement('div')
imageElement.classList.add('image-div')
imageElement.id = id
const img = document.createElement('img')
img.src = url
imageElement.appendChild(img)
const deleteImgBtn = document.createElement('button')
deleteImgBtn.classList.add('del-img-btn')
deleteImgBtn.onclick = () => deleteImage(imageElement)
deleteImgBtn.appendChild(document.createElement('div'))
deleteImgBtn.appendChild(document.createElement('div'))
imageElement.appendChild(deleteImgBtn)
imagesDiv.appendChild(imageElement)
fileUploadBtn.disabled = false
return imageElement
}
fileInput.addEventListener('change', e => {
for (let i = 0; i < e.target.files.length; i++) {
const reader = new FileReader()
reader.addEventListener('load', e => {
addImage(e.target.result)
})
reader.readAsDataURL(e.target.files[i])
}
fileInput.value = ''
})
</script>
</body>
</html>