Visualforce Developer Guide
japex:param
A parameter for the parent component. The <apex:param> component can only be a child of the following components:
- <apex:actionFunction>
- <apex:actionSupport>
- <apex:commandLink>
- <apex:outputLink>
- <apex:outputText>
- <flow:interview>
Use this component to get user input for a controller method that does not correspond to a field on an sObject. Only <apex:inputField> and <apex:outputField> can be used with sObject fields.
Within <apex:outputText>, there’s support for the <apex:param> tag to match the syntax of the MessageFormat class in Java.
apex:outputLink Example
1<!-- For this example to render fully, associate the page
2with a valid contact record in the URL.
3For example: https://MyDomain_login_URL/apex/myPage?id=001D000000IRt53 -->
4
5<apex:page standardController="Contact">
6 <apex:outputLink value="http://google.com/search">
7 Search Google
8 <apex:param name="q" value="{!contact.name}"/>
9 </apex:outputLink>
10</apex:page>Attributes
| Attribute Name | Attribute Type | Description | Required? | API Version | Access |
|---|---|---|---|---|---|
| assignTo | Object | A setter method that assigns the value of this param to a variable in the associated Visualforce controller. If this attribute is used, getter and setter methods, or a property with get and set values, must be defined. | 10.0 | global | |
| id | String | An identifier that allows the param component to be referenced by other components in the page. | 10.0 | global | |
| name | String | The key for this parameter, for example, name="Location". | Yes | 10.0 | global |
| value | Object | The data associated with this parameter, for example, value="San Francisco, CA". The value attribute must be set to a string, number, or boolean value. | Yes | 10.0 | global |