Salesforce Console Developer Guide

Salesforce Console Developer Guide
Lightning Console API
How are the Classic and Lightning Console APIs Different?
Lightning Console JavaScript API
Lightning Console JavaScript API Syntax
JavaScript Promises
Error Handling with Promises
Using Background Utility Items
Using Pop-Out Utilities
Using Events with the Lightning Console JavaScript API
Using Page Context in the Utility Bar API
Using Page References to Open Console Workspace Tabs and Subtabs
Debugging
Methods
Events
Salesforce Classic API
Other Resources
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Error Handling with Promises

Promises can simplify code that handles the success or failure of asynchronous calls. To use error handling with promises, use the catch() method on the promise that is returned from calling an API method.

The catch() method returns a promise and accepts a single function parameter that’s called if the promise is rejected. This function has one argument that shows the reason for the rejection. The promise returned by catch() is rejected if the function that is passed in either throws an error or returns a promise that’s rejected. Otherwise, the promise is resolved.