HTMLFormElement: length property

{{APIRef("HTML DOM")}}

The HTMLFormElement.length read-only property returns the number of controls in the {{HTMLElement("form")}} element.

You can access the list of the form's controls using the {{domxref("HTMLFormElement.elements", "elements")}} property.

This includes both elements that are descendants of the <form> element as well as elements that are made members of the form using their form property.

Elements that are considered for this property are: {{HTMLElement("button")}}, {{HTMLElement("fieldset")}}, {{HTMLElement("input")}} (with the exception that any whose type is "image" are omitted for historical reasons), {{HTMLElement("object")}}, {{HTMLElement("output")}}, {{HTMLElement("select")}}, and {{HTMLElement("textarea")}}.

Value

A number.

Examples

if (document.getElementById("form1").length > 1) {
  // more than one form control here
}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}