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              p 名前
  input#name(type="text" placeholder="名前を入力してください")
p url
  input#url(type="text" placeholder="urlを入力してください")
button#download ダウンロード
              window.onload = () => {
  const download =document.getElementById('download');
  const getData = () =>{
    return {
      name: document.getElementById('name').value,
      url: document.getElementById('url').value
  download.addEventListener('click', function(){
    const data = getData();
    const blob = new Blob([JSON.stringify(data, null, '  ')],
	{type: 'application\/json'});
    const url = URL.createObjectURL(blob);
    const link = document.createElement('a');
    link.href = url;
    link.download = 'sample.json';
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