object to formdata

object to formdata

function toFormData(obj, form, namespace) {
  let fd = form || new FormData();
  let formKey;
  
  for(let property in obj) {
    if(obj.hasOwnProperty(property) && obj[property]) {
      if (namespace) {
        formKey = namespace + '[' + property + ']';
      } else {
        formKey = property;
      }
     
      // if the property is an object, but not a File, use recursivity.
      if (obj[property] instanceof Date) {
        fd.append(formKey, obj[property].toISOString());
      }
      else if (typeof obj[property] === 'object' && !(obj[property] instanceof File)) {
        toFormData(obj[property], fd, formKey);
      } else { // if it's a string or a File object
        fd.append(formKey, obj[property]);
      }
    }
  }
  
  return fd;
}