D3 Examples - OPTIONS preflight headers response

xxxxxxxxxx
 
<html>
<body><title>example</title>
<form action="">
    <input type="button" value="post" onclick="return postForm()">
</form>
<textarea id="out" rows=25 cols=80></textarea>
<script>
    function postForm() {
        let opts = {"user": "vlad", "pass": "vlad pass"};
​
        fetch('https://localhost:5001', {
            method: 'post',
            body: JSON.stringify(opts),
            headers: {
                "Content-Type": "application/json",
                "Authorization": "Basic " + btoa("one:pass")
            }
        }).then(function (response) {
            return response.json();
        }).then(function (data) {
            console.log('Created Gist:', data.html_url);
        });
​
    }
</script>
</body>
</html>
    