Canvas Developer Guide

Introducing Canvas
Quick Start
Quick Start—Advanced
Canvas SDK
Referencing the Canvas SDK
Authentication
Getting Context in Your Canvas App
Cross-Domain XHR
Alternatives to Cookies for User Tracking
Resizing a Canvas App
Automatically Resizing a Canvas App
Explicitly Resizing a Canvas App
Getting the Size of a Canvas App
Subscribing to Parent Events
Handling Orientation Changes in Your Canvas App
Implementing Canvas App Events
Using Streaming API in a Canvas App
Debugging in a Canvas App
Using the <select> Tag in a Canvas App
Canvas Apps and Visualforce Pages
Lightning Component Code Examples
Canvas Apps in a Page Layout or a Mobile Card
Canvas Apps in the Publisher
Canvas Apps in the Chatter Feed
Canvas in the Salesforce Mobile App
Customizing Your App Lifecycle
Objects
Canvas Limits
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Getting the Size of a Canvas App

The following code example shows how to call the size method to get the size of the canvas app. The console.log function outputs the frame sizes so you can see the sizes change as you resize the canvas app.