# compare(_:) ``` func compare(_ other: Double) -> JSRelationCondition ``` ## Return Value A value of JSRelationCondition, a kJSRelationConditionUndefined is returned if an exception is thrown. ## Discussion \abstract Compare a JSValue with a double. \discussion The JSValue is converted to a double according to the rules specified by the JavaScript language then compared with other. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)