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script.js
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script.js
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const [inputFile, inputURL] = document.querySelectorAll('input')
const div = document.querySelector('div')
const handle = (filename, imgSrc, pass) =>
{
const img = document.createElement('img')
img.src = imgSrc
img.crossOrigin = ''
img.addEventListener('load', () => {
const color = 'rgba(' + img.getRgba().join(', ') + ')'
const p = document.createElement('p')
p.style.color = color
p.textContent = filename + ' => ' + color
pass(p)
})
}
inputFile.addEventListener('change', () => {
for (const file of inputFile.files)
{
const reader = new FileReader
reader.addEventListener('load', () => {
handle(file.name, reader.result, img => div.prepend(img))
})
reader.readAsDataURL(file)
}
})
inputURL.addEventListener('input', () => {
try
{
const { href, pathname, protocol } = new URL(inputURL.value)
let filename
switch (protocol)
{
case 'data:':
filename = 'data url'
break
case 'http:':
filename = pathname.split('/').pop()
break
case 'https:':
filename = pathname.split('/').pop()
break
default:
alert(protocol + ' is an unsupported protocol')
}
if (filename) handle(filename, href, img => div.prepend(img))
}
catch ({ message }) { alert(message) }
})