copyToClipboardWithFallback.js

export async function copyToClipboard (text) {
  try {
    // try to use Clipboard API
    await navigator.clipboard.writeText(text);
    return true
  } catch (_) {
    // Clipboard API is not supported
    const el = document.createElement('textarea')
    el.value = text
    document.body.appendChild(el)
    el.select()
    const result = document.execCommand('copy')
    document.body.removeChild(el)
    return result === 'unsuccessful' ? false : true
  }
}