JavaScript Reference :: Button

The easiest way to create a Button object is to get the HTML element using either the document method getElementById or getElementsByTagName to get a reference to an HTML button tag or an HTML input tag that has a type attribute of "button". Of course, you may also use document.createElement("button") or document.createElement("input") and set the type to "button". Once you have the element, you can assign event handlers or modify the properties.

Button

methods

void handeEvent(event)

Calls the handler for the specified event.

object toSource()

Returns a literal representing the source code of the object e.g "function Object() { [native code] }" or "function Car(manufactuer, model, productionyear) { this.make = manufactuer; this.model = model; this.year = productionyear; }".

string toString()

Returns a string representing the object i.e. "[object Object]".

void unwatch(property)

Removes a previously set watchpoint.

object valueOf()

Returns the primitive value of the object e.g. "function Object() { [native code] }".

void watch(property, handlingFunction)

Calls the handlingFunction when the property is changed.

properties

className: The value provided in the class attribute of the HTML tag.
constructor: The constructor method is the base method used to create an instance of the object.
form: The form in which the button object is contained.
id: The value provided in the id attribute of the HTML tag.
name: The value provided in the name attribute of the HTML tag.
prototype: Exposes the prototype for the method or property of the object.
type: A string representing the type of the control, i.e. "button".
value: The text displayed to the user.

events

onblur
onclick
ondblclick
onfocus
onkeydown
onkeypress
onkeyup
onmousedown
onmouseout
onmouseover
onmouseup
onresize