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Old school D3 from simpler times
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vladimir-ivanov
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OPTIONS preflight headers response
<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>