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
Live Controller (Pilot)
Advanced Examples
Overriding Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrating 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
Declaring a Remote Method in Apex
Handling the Remote Response
Understanding Date and Time Serialization
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
Best Practices
Standard Component Reference
Appendices
Glossary
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Understanding Date and Time Serialization

Date and time values are serialized as epoch time when passed via Visualforce remoting.

Date, DateTime, and Time objects are returned from a RemoteAction function are serialized as a long integer.

Serialized Datetime Value

1[{
2    "statusCode": 200,
3    "type": "rpc",
4    "tid": 8,
5    "ref": false,
6    "action": "DateTestController",
7    "method": "add",
8    "result": 1432047600000
9}]