JAVASCRIPT

html form data to json

var formData= new FormData(form)
JSON.stringify(Object.fromEntries(formData))

form data to json

function formDataToJson(formData){
    let json = {};
    if(!(formData instanceof FormData)) return json;
    formData.forEach((value,key)=>{
        json[key] = value;
    });
    return json;
}