How can JavaScript save to a local file?
There's already a solution for writing file JSON online but I want to save json file locally.
I've tried to use this example http://jsfiddle.net/RZBbY/10/
It creates a link to download the file, using this call
a.attr('href', 'data:application/x-json;base64,' + btoa(t.val())).show();
Is there a way to save the file locally instead of providing a downloadable link?
There are other types of conversion beyond data:application/x-json;base64?
Here's my code:
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>jQuery UI Sortable - Default functionality</title>
<link rel="stylesheet" href="http://jqueryui.com/themes/base/jquery.ui.all.css">
<script src="http://jqueryui.com//jquery-1.7.2.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.core.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.widget.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.mouse.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.sortable.js"></script>
<script src="http://jqueryui.com/ui/jquery.ui.accordion.js"></script>
<link rel="stylesheet" href="http://jqueryui.com/demos/demos.css">
<meta charset="utf-8">
<style>a { font: 12px Arial; color: #ac9095; }</style>
<script type='text/javascript'>
$(document).ready(function() {
var f = $('form'), a = $('a'),
i = $('input'), t = $('textarea');
$('#salva').click(function() {
var o = {}, v = t.val();
a.hide();//nasconde il contenuto
i.each(function() {
o[this.name] = $(this).val(); });
if (v === '') {
t.val("[\n " + JSON.stringify(o) + " \n]")
}
else {
t.val(v.substr(0, v.length - 3));
t.val(t.val() + ",\n " + JSON.stringify(o) + " \n]")
}
});
});
$('#esporta').bind('click', function() {
a.attr('href', 'data:application/x-json;base64,' + btoa(t.val())).show();
});
</script>
</head>
<body>
<form>
<label>Nome</label> <input type="text" name="nome"><br />
<label>Cognome</label> <input type="text" name="cognome">
<button type="button" id="salva">Salva</button>
</form>
<textarea rows="10" cols="60"></textarea><br />
<button type="button" id="esporta">Esporta dati</button>
<a href="" style="display: none">Scarica Dati</a>
</body>
</html>
Answer
You should check the download attribute and the window.URL method because the download attribute doesn't seem to like data URI.
This example by Google is pretty much what you are trying to do.