http://www.bing.com:80/search?q=Optional+Function+Parameter+JavaScriptSearch resultshttp://www.bing.com:80/s/a/rsslogo.gifhttp://www.bing.com:80/search?q=Optional+Function+Parameter+JavaScriptCopyright © 2026 Microsoft. All rights reserved. These XML results may not be used, reproduced or transmitted in any manner or for any purpose other than rendering Bing results within an RSS aggregator for your personal, non-commercial use. Any other use of these results requires express written permission from Microsoft Corporation. By accessing this web page or using these results in any manner whatsoever, you agree to be bound by the foregoing restrictions.https://www.merriam-webster.com/dictionary/optionalThe meaning of OPTIONAL is involving an option : not compulsory. How to use optional in a sentence.Mon, 17 Aug 2026 09:01:00 GMThttps://dictionary.cambridge.org/dictionary/english/optionalOPTIONAL definition: 1. If something is optional, you can choose if you want to do it, pay it, buy it, etc.: 2. If…. Learn more.Mon, 17 Aug 2026 14:02:00 GMThttps://www.dictionary.com/browse/optionalOPTIONAL definition: left to one's choice; not required or mandatory. See examples of optional used in a sentence.Mon, 17 Aug 2026 19:02:00 GMThttps://www.merriam-webster.com/thesaurus/optionalSynonyms for OPTIONAL: voluntary, elective, discretionary, alternative, unnecessary, chosen, alternate, unwanted; Antonyms of OPTIONAL: mandatory, compulsory, required, obligatory, necessary, essential, requisite, nonvoluntarySun, 16 Aug 2026 21:20:00 GMThttps://www.thefreedictionary.com/optionalDefine optional. optional synonyms, optional pronunciation, optional translation, English dictionary definition of optional. adj. Left to choice; not compulsory or automatic. op′tion·al·ly adv. American Heritage® Dictionary of the English Language, Fifth Edition.Fri, 14 Aug 2026 06:20:00 GMThttps://dictionary.cambridge.org/us/dictionary/english/optionalOPTIONAL meaning: 1. If something is optional, you can choose if you want to do it, pay it, buy it, etc.: 2. If…. Learn more.Sun, 26 Jul 2026 03:08:00 GMThttps://www.vocabulary.com/dictionary/optionalIf you can choose whether or not to do something, it is optional. Extra credit is always optional; death and taxes are not.Sun, 16 Aug 2026 00:13:00 GMThttps://www.collinsdictionary.com/dictionary/english/optionalIf something is optional, you can choose whether or not you do it or have it. A holiday isn't an optional extra. In this stressful, frantic world it's a must. Sex education is a sensitive area for some parents, and thus it should remain optional.Tue, 04 Aug 2026 05:13:00 GMThttps://en.wiktionary.org/wiki/optionalNoun optional (plural optionals) Something that is not compulsory, especially part of an academic course. (programming, sometimes capitalized) In various programming languages, a kind of variable that is assigned a specific data type but may or may not hold an actual value.Mon, 17 Aug 2026 09:23:00 GMThttps://www.definitions.net/definition/OptionalOptional refers to something that is not compulsory or required, and can be chosen at one's own discretion or preference. It offers the freedom to decide whether to follow, participate, include, or select it.Mon, 17 Aug 2026 01:09:00 GMT