Form submit via JS

var elForm = document.querySelector('bsp-form[data-anchor] form')


var elUrl = new URL(elForm.action)
elUrl.searchParams.append('_someKey', 'clearCache')
elUrl.searchParams.append('_renderer', 'styleguide')
console.log('ELURL', elUrl)
fetch(elUrl, {
            method: 'POST',
            body: new FormData(elForm)
        })
        .then(response => {
            if (!response.ok) {
                throw new Error('Network response was not ok');
            }
            return response.json(); // Parse the JSON response
        })
        .then(data => {
            window.fakeDoc = document.createElement('div')
            window.fakeDoc.innerHTML = data
            // Update your UI based on the response
        })
        .catch(error => {
            console.error('Error:', error);
        });