disableInjectedStyle

FormBuilder ships with a minimal Bootstrap 3 set of CSS classes for rendering form controls. You may choose to disable these to ensure they do not clash with a Bootstrap 4 or 5 included stylesheet

Disable Embedded Bootstrap Classes

var options = {
  disableInjectedStyle: "bootstrap"
};
$(container).formBuilder(options);

Disable all embedded styles

You can also completely disable all embedded styles, I'm not sure why anyone would want to do this, but it's been requested a couple of times so here it is... disableInjectedStyle enables you to disable the injected style that ships with the plugin.

var options = {
  disableInjectedStyle: true
};
$(container).formBuilder(options);

See it in Action