Visualforce Developer Guide

Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Advanced Examples
Override Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrate Email with Visualforce
Visualforce Charting
Creating Maps with Visualforce
Render Flows with Visualforce
Templating with Visualforce
Developing Salesforce Apps with Visualforce
Adding Visualforce to a Salesforce AppExchange App
Using JavaScript in Visualforce Pages
Using $Component to Reference Components from JavaScript
Using JavaScript Libraries with Visualforce
JavaScript Remoting for Apex Controllers
What Is JavaScript Remoting?
When to Use JavaScript Remoting
Adding JavaScript Remoting to a Visualforce Page
Configuring a JavaScript Remoting Request
Namespaces and JavaScript Remoting
OAuth 2.0 Authentication for JavaScript Remoting
Declaring a Remote Method in Apex
Handling the Remote Response
Debugging JavaScript Remoting
JavaScript Remoting Limits and Considerations
JavaScript Remoting Example
Common Visualforce JavaScript Remoting API Validation Errors
Visualforce Remote Objects
Communicating Across the DOM with Lightning Message Service
Visualforce Best Practices
Standard Visualforce Component Reference
Appendices
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Configuring a JavaScript Remoting Request

Configure a remoting request by providing an object with configuration settings when you declare the remoting request.
For example, the default configuration parameters look like this:
These configuration parameters aren’t ordered, and you can omit parameters you don’t want to change from the default.
JavaScript remoting supports the following configuration parameters:
Name Data Type Description
buffer Boolean Whether to group requests executed close to each other in time into a single request. The default is true.

JavaScript remoting optimizes requests that are executed close to each other in time and groups the calls into a single request. This buffering improve the efficiency of the overall request-and-response cycle, but sometimes it’s useful to ensure all requests execute independently.
escape Boolean Whether to escape the Apex method’s response. The default is true.
timeout Integer The timeout for the request, in milliseconds. The default is 30,000 (30 seconds). The maximum is 120,000 (120 seconds, or 2 minutes).
The request timeout can also be configured for all requests made by a page, by setting the timeout using the Visualforce remoting object:

Override a page-level timeout configuration on a per-request basis by setting the timeout in the configuration object for that request, as described above.