REST API live demo

Convert CSV to JSON using query parameter

csv = $('#publishedCSV').val();
fetch("/api/?csv=" + encodeURIComponent(csv))
.then(response => response.json())
.then(data => $('#output').text(JSON.stringify(data, null, 2)));
                    

OR

Convert CSV to JSON using request with body parameter

data.csv = $('#publishedCSV').val();
fetch("/api", { method: 'POST', mode: 'cors', 
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(data) 
})
.then(response => response.json())
.then(data => $('#output').text(JSON.stringify(data, null, 2)));
                    

JSON will appear here