how to download and read file javascript code example

Example 1: download file javascript

function download(link) {
  var element = document.createElement('a');
  element.setAttribute('href', link);

  element.style.display = 'none';
  document.body.appendChild(element);

  element.click();

  document.body.removeChild(element);
}

Example 2: javascript download file

$('a#someID').attr({target: '_blank', 
                    href  : 'http://localhost/directory/file.pdf'});

Example 3: js download file from webserver

<iframe id="download_iframe" style="display:none;"></iframe>
<script>
	document.getElementById('download_iframe').src = "/example/example.txt";
</script>