av/cmd/audio-player/main.js

26 lines
719 B
JavaScript

window.onload = function () {
document.getElementById('input').addEventListener('change', getFile)
}
function getFile(){
const input = event.target
if ('files' in input && input.files.length > 0) {
placeFileContent(document.getElementById('content'), input.files[0])
}
}
function placeFileContent(target, file) {
readFileContent(file).then(content => {
target.value = content
}).catch(error => console.log(error))
}
function readFileContent(file) {
const reader = new FileReader()
return new Promise((resolve, reject) => {
reader.onload = event => resolve(event.target.result)
reader.onerror = error => reject(error)
reader.readAsText(file)
})
}