YUI Library Examples: Button Control: Radio Buttons

Creating Radio Buttons

The ButtonGroup class creates a set of Buttons that are mutually exclusive; checking one button in the group will uncheck all others in the group. The ButtonGroup class is defined by YAHOO.widget.ButtonGroup and a ButtonGroup's root HTML element is a <div/>.

A ButtonGroup can be instantiated three different ways:

Using an existing set of <input type="radio"/> elements
Using an existing set of Buttons defined using Button Control HTML
Using no existing HTML

Using an existing set of `<input type="radio"/>` elements

A ButtonGroup can be created from a set of existing <input type="radio"/> elements:


1	<div id="buttongroup1" class="yui-buttongroup">
2	<input id="radio1" type="radio" name="radiofield1" value="Radio 1" checked>
3	<input id="radio2" type="radio" name="radiofield1" value="Radio 2">
4	<input id="radio3" type="radio" name="radiofield1" value="Radio 3">
5	<input id="radio4" type="radio" name="radiofield1" value="Radio 4">
6	</div>
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To instantiate a ButtonGroup from existing HTML, pass the id of the ButtonGroup's <div/> element as the first argument to the ButtonGroup constructor and any additional configuration attributes as the second argument via an object literal. The ButtonGroup will automatically search its child nodes for HTML radio buttons (<input type="radio"/>) and use those elements to create instances of YAHOO.widget.Button of type "radio."


1	var oButtonGroup1 = new YAHOO.widget.ButtonGroup("buttongroup1")
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Using an existing set of Buttons defined using Button Control HTML

Alternatively, each Button in a ButtonGroup can be defined using the YUI Button HTML: An element with a class of "yui-button" and "yui-radio-button" containing a element with a class of "first-child" containing a <button/> element.


1	<div id="buttongroup2" class="yui-buttongroup">
2	<span id="radio5" class="yui-button yui-radio-button yui-button-checked">
3	<span class="first-child">
4	<button type="button" name="radiofield2" value="Radio 5">
5	Radio 5
6	</button>
7	</span>
8	</span>
9	<span id="radio6" class="yui-button yui-radio-button">
10	<span class="first-child">
11	<button type="button" name="radiofield2" value="Radio 6">
12	Radio 6
13	</button>
14	</span>
15	</span>
16	<span id="radio7" class="yui-button yui-radio-button">
17	<span class="first-child">
18	<button type="button" name="radiofield2" value="Radio 7">
19	Radio 7
20	</button>
21	</span>
22	</span>
23	<span id="radio8" class="yui-button yui-radio-button">
24	<span class="first-child">
25	<button type="button" name="radiofield2" value="Radio 8">
26	Radio 8
27	</button>
28	</span>
29	</span>
30	</div>
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<div id="buttongroup2" class="yui-buttongroup">
    <span id="radio5" class="yui-button yui-radio-button yui-button-checked">
        <span class="first-child">
            <button type="button" name="radiofield2" value="Radio 5">
                Radio 5
            </button>
        </span>
    </span>
    <span id="radio6" class="yui-button yui-radio-button">
        <span class="first-child">
            <button type="button" name="radiofield2" value="Radio 6">
                Radio 6
            </button>
        </span>
    </span>
    <span id="radio7" class="yui-button yui-radio-button">
        <span class="first-child">
            <button type="button" name="radiofield2" value="Radio 7">
                Radio 7
            </button>
        </span>
    </span>
    <span id="radio8" class="yui-button yui-radio-button">
        <span class="first-child">
            <button type="button" name="radiofield2" value="Radio 8">
                Radio 8
            </button>
        </span>
    </span>
</div>

To instantiate a ButtonGroup using the Button Control HTML, pass the id of the ButtonGroup's root element (the element with the classes "yui-buttongroup" and "yui-radio-button" applied) as the first argument to constructor and any additional configuration attributes as the second argument via an object literal.


1	var oButtonGroup2 = new YAHOO.widget.ButtonGroup("buttongroup2");
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Using no existing HTML

To build a ButtonGroup with no existing HTML, pass a set of configuration attributes as a single argument to the ButtonGroup constructor using an object literal. Add buttons to the ButtonGroup via the addButton or addButtons methods.


1	var oButtonGroup3 = new YAHOO.widget.ButtonGroup({
2	id: "buttongroup3",
3	name: "radiofield3",
4	container: "radiobuttonsfromjavascript" });
5
6	oButtonGroup3.addButtons([
7
8	{ label: "Radio 9", value: "Radio 9", checked: true },
9	{ label: "Radio 10", value: "Radio 10" },
10	{ label: "Radio 11", value: "Radio 11" },
11	{ label: "Radio 12", value: "Radio 12" }
12
13	]);
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In most cases, it is necessary to specify the ButtonGroup's id and container (the HTML element that the ButtonGroup should be appended to once created). If an id is not specified for the ButtonGroup, one will be generated using the generateId method of the Dom utility.

Configuration for This Example

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YUI Logger Output:

Logger Console

INFO 638ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup2
Initialization completed.

INFO 638ms (+0) 10:00:30 AM:

ButtonGroup buttongroup2

Searching for child nodes with the type of "radio" to add to the button group.

INFO 638ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup2
Button radio8 added.

INFO 638ms (+0) 10:00:30 AM:
Button  radio8
Initialization completed.

INFO 638ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 8"

INFO 638ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield2"

INFO 638ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 638ms (+1) 10:00:30 AM:
ButtonGroup  buttongroup2
Button radio7 added.

INFO 637ms (+0) 10:00:30 AM:
Button  radio7
Initialization completed.

INFO 637ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 7"

INFO 637ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield2"

INFO 637ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 637ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup2
Button radio6 added.

INFO 637ms (+1) 10:00:30 AM:
Button  radio6
Initialization completed.

INFO 636ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 6"

INFO 636ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield2"

INFO 636ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 636ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup2
Button radio5 added.

INFO 636ms (+1) 10:00:30 AM:
Button  radio5
Initialization completed.

INFO 635ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 5"

INFO 635ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield2"

INFO 635ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 635ms (+1) 10:00:30 AM:
ButtonGroup  buttongroup2
Found 4 child nodes with the class name "yui-radio-button."  Attempting to add to button group.

INFO 634ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup2
Searching for child nodes with the class name "yui-radio-button" to add to the button group.

INFO 634ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup1
Initialization completed.

INFO 634ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup1
Button radio4 added.

INFO 634ms (+4) 10:00:30 AM:
Button  radio4
Initialization completed.

INFO 630ms (+0) 10:00:30 AM:

Button null

Source element could not be used as is. Creating a new HTML element for the button.

INFO 630ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 4"

INFO 630ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield1"

INFO 630ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 630ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup1
Button radio3 added.

INFO 630ms (+1) 10:00:30 AM:
Button  radio3
Initialization completed.

INFO 629ms (+0) 10:00:30 AM:

Button null

Source element could not be used as is. Creating a new HTML element for the button.

INFO 629ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 3"

INFO 629ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield1"

INFO 629ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 629ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup1
Button radio2 added.

INFO 629ms (+1) 10:00:30 AM:
Button  radio2
Initialization completed.

INFO 628ms (+0) 10:00:30 AM:

Button null

Source element could not be used as is. Creating a new HTML element for the button.

INFO 628ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 2"

INFO 628ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield1"

INFO 628ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 628ms (+0) 10:00:30 AM:
ButtonGroup  buttongroup1
Button radio1 added.

INFO 628ms (+2) 10:00:30 AM:
Button  radio1
Initialization completed.

INFO 626ms (+0) 10:00:30 AM:

Button null

Source element could not be used as is. Creating a new HTML element for the button.

INFO 626ms (+0) 10:00:30 AM:

Button null

Setting attribute "value" using source element's attribute value of "Radio 1"

INFO 626ms (+0) 10:00:30 AM:

Button null

Setting attribute "name" using source element's attribute value of "radiofield1"

INFO 626ms (+0) 10:00:30 AM:

Button null

Building the button using an existing HTML element as a source element.

INFO 626ms (+0) 10:00:30 AM:

ButtonGroup buttongroup1

Found 4 child nodes with the type of "radio." Attempting to add to button group.

INFO 626ms (+1) 10:00:30 AM:

ButtonGroup buttongroup1

Searching for child nodes with the type of "radio" to add to the button group.

INFO 625ms (+87) 10:00:30 AM:
ButtonGroup  buttongroup1
Searching for child nodes with the class name "yui-radio-button" to add to the button group.

INFO 538ms (+0) 10:00:30 AM:
ButtonGroup  undefined
Button yui-gen3 added.

INFO 538ms (+0) 10:00:30 AM:
Button  yui-gen3
Initialization completed.

INFO 538ms (+0) 10:00:30 AM:

Button null

No source HTML element. Building the button using the set of configuration attributes.

INFO 538ms (+0) 10:00:30 AM:

Button null

No value specified for the button's "id" attribute. Setting button id to "yui-gen3".

INFO 538ms (+0) 10:00:30 AM:
ButtonGroup  undefined
Button yui-gen2 added.

INFO 538ms (+1) 10:00:30 AM:
Button  yui-gen2
Initialization completed.

INFO 537ms (+0) 10:00:30 AM:

Button null

No source HTML element. Building the button using the set of configuration attributes.

INFO 537ms (+0) 10:00:30 AM:

Button null

No value specified for the button's "id" attribute. Setting button id to "yui-gen2".

INFO 537ms (+0) 10:00:30 AM:
ButtonGroup  undefined
Button yui-gen1 added.

INFO 537ms (+1) 10:00:30 AM:
Button  yui-gen1
Initialization completed.

INFO 536ms (+0) 10:00:30 AM:

Button null

No source HTML element. Building the button using the set of configuration attributes.

INFO 536ms (+0) 10:00:30 AM:

Button null

No value specified for the button's "id" attribute. Setting button id to "yui-gen1".

INFO 536ms (+0) 10:00:30 AM:
ButtonGroup  undefined
Button yui-gen0 added.

INFO 536ms (+3) 10:00:30 AM:
Button  yui-gen0
Initialization completed.

INFO 533ms (+0) 10:00:30 AM:

Button null

No source HTML element. Building the button using the set of configuration attributes.

INFO 533ms (+0) 10:00:30 AM:

Button null

No value specified for the button's "id" attribute. Setting button id to "yui-gen0".

INFO 533ms (+1) 10:00:30 AM:
ButtonGroup  undefined
Initialization completed.

INFO 532ms (+0) 10:00:30 AM:

ButtonGroup undefined

Searching for child nodes with the type of "radio" to add to the button group.

INFO 532ms (+1) 10:00:30 AM:
ButtonGroup  undefined
Searching for child nodes with the class name "yui-radio-button" to add to the button group.

INFO 531ms (+531) 10:00:30 AM:

ButtonGroup undefined

No source HTML element. Building the button group using the set of configuration attributes.

INFO 0ms (+0) 10:00:29 AM:
global
Logger initialized

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YUI Library Examples: Button Control: Radio Buttons

Creating Radio Buttons

Using an existing set of `<input type="radio"/>` elements

Using an existing set of Buttons defined using Button Control HTML

Using no existing HTML

Configuration for This Example

YUI Logger Output:

Logger Console

Button Control Examples:

More Button Control Resources:

YUI Library Examples: Button Control: Radio Buttons

Button Control: Radio Buttons

Creating Radio Buttons

Using an existing set of <input type="radio"/> elements

Using an existing set of Buttons defined using Button Control HTML

Using no existing HTML

Configuration for This Example

YUI Logger Output:

Logger Console

Button Control Examples:

More Button Control Resources:

Using an existing set of `<input type="radio"/>` elements