Visualforce Developer Guide

Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Styling Visualforce Pages
Using Salesforce Styles
Extending Salesforce Styles with Stylesheets
Using the Lightning Design System
Style Existing Visualforce Pages with Lightning Experience Stylesheets
Using Custom Styles
Suppressing the Salesforce User Interface and Styles
Defining Styles for a Component’s DOM ID
Using Styles from Salesforce Stylesheets
Identifying the Salesforce Style Your Users See
Determining the Salesforce Style That Users See in JavaScript
HTML Comments and IE Conditional Comments
HTML Tags Added or Modified by Visualforce
Using a Custom Doctype
Using a Custom ContentType
Setting Custom HTML Attributes on Visualforce Components
Offline Caching Using the HTML5 manifest Attribute
Render a Visualforce Page as a PDF File
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
Communicating Across the DOM with Lightning Message Service
Best Practices
Standard Component Reference
Appendices
Glossary
PDF

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Determining the Salesforce Style That Users See in JavaScript

If you use a lot of JavaScript in your pages and apps, identifying the Salesforce theme that a user sees in JavaScript code is important. Identifying the current user experience context allows you to correctly manage navigation in your JavaScript code.

The UITheme.getUITheme() JavaScript function returns a string containing one of the following values to identify the current user interface theme.

  • Theme1—Obsolete Salesforce theme
  • Theme2—Salesforce Classic 2005 user interface theme
  • Theme3—Salesforce Classic 2010 user interface theme
  • Theme4d—Modern “Lightning Experience” Salesforce theme
  • Theme4t—Salesforce mobile app theme
  • Theme4u—Lightning Console theme
  • PortalDefault—Salesforce Customer Portal theme
  • Webstore—AppExchange theme

The string values returned are the same values returned by the Visualforce $User.UITheme and $User.UIThemeDisplayed global variables.

The following markup checks if the current user experience context is the Lightning Experience theme.

1function isLightningDesktop() {
2  return UITheme.getUITheme === "Theme4d";
3}