Javascript - Working with Form and Form Fields
form.action
form.method
form.encoding
form.name
form.target
form.reset()
form.submit()
form.elements
form.length // provide access to the length of the elements array
element.value
document.forms[0].birthdate.value
document.form[0].submit();
var name = document.myform.name.value;
var password = document.myform.password.value;
document.getElementById(‘checkbox1’).checked // determine if the check box is checked
How to access the value of a form field?
element.value
document.forms[0].birthdate.value
The form object:
action // access the HTML action attribute
button
checkbox
elements
encoding
FileUpload
hidden
length // provide access to the length of the elements array
method // access the HTML method attribute
name // identifies the name of the form
password
radio
reset() // reset the form
select
submit() // submit the form
target // access the HTML target attribute
text
textarea
The properties of form elements:
button name
type
value
checkbox checked
defaultChecked
name
type
value
FileUpload name
type
value
hidden name
type
value
password defaultValue
name
type
value
radio checked
defaultChecked
name
type
value
reset name
type
value
select length
name
options
selectedIndex // identifies the first selected option within select list
type
submit name
type
value
text defaultValue
name
type
value
textarea defaultValue
name
type
value
Methods of form elements:
button click(), blur(), focus()
checkbox click(), blur(), focus()
FileUpload blur(), focus(), select() // select an input area of the file upload field
hidden
password blur(), focus(), select() // highlight the text displayed in the password field
radio click(), blur(), focus()
reset click(), blur(), focus()
select blur(), focus()
submit click(), blur(), focus()
text blur(), focus(), select()
textarea blur(), focus(), select()
page revision: 5, last edited: 15 Nov 2016 00:31