Javascript : Client Side Scripting :: Form Object in JavaScript

• Form Object in Javascript
• Multiple Form in a Page

• The form object allows your script to interact with HTML forms.
• The form object is accessed as a property of the document object.
• Form[] array can be used when more than one form in the same HTML.
• Any one of these statements will access form1.
  • document.myform1 or
  • document.forms[0]

Syntax:
window.document.form_name or document.form_name

• Every form can contain one or more of the elements such as radio button, push button, checkbox, submit button, reset button, options menu and text area.
• The elements on the form can be accessed by:

window.document.form_name.element_name 

• The elements array is a property of the form object.
• It contains the list of all elements contained in a form.

document.myform1.elements[3].value

The number of elements in the elements array can be determined using the length property

document.myform1.elements.length