Javascript Error Nan
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Javascript Nan Check
Who is Who JavaScript Number - NaN Advertisements Previous Page Next Page Description Unquoted literal constant NaN is a special value representing Not-a-Number. Since NaN always compares unequal to any number, including NaN, it is usually used to indicate an error condition for a function that should return a valid number. Note − Use the isNaN() global function to see if a value is an NaN value. Syntax The syntax to use NaN is − var val = Number.NaN; Example Try the following example to learn how to use NaN.
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Nan Error In Jquery
docs Mozilla Docs Add-ons Firefox Developer ToolsFeedback Get Firefox help nan food Get web development help Join the MDN community Report a content problem Report a bug javascript nan to 0 Search Search Languages Català (ca) Čeština (cs) Deutsch (de) Español (es) Français (fr) Italiano (it) 日本語 (ja) 한국어 (ko) Polski (pl) Português (do Brasil) (pt-BR) https://www.tutorialspoint.com/javascript/number_nan.htm Русский (ru) 中文 (简体) (zh-CN) 正體中文 (繁體) (zh-TW) Add a translation Edit Advanced Advanced History Print this article MDN Web technology For developers JavaScript JavaScript reference Standard built-in objects NaN Your Search Results fscholz x2357 teoli Waldo Sheppy ethertank jswisher dbruant evilpie Daniel Gomola Mgjbot Yuichirou Sevenspade Callek Maian Nickolay Marcoos https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN Dria NaN In This Article SyntaxDescriptionTesting against NaNSpecificationsBrowser compatibilitySee also The global NaN property is a value representing Not-A-Number. Property attributes of NaN Writable no Enumerable no Configurable no Syntax NaN Description NaN is a property of the global object. The initial value of NaN is Not-A-Number — the same as the value of Number.NaN. In modern browsers, NaN is a non-configurable, non-writable property. Even when this is not the case, avoid overriding it. It is rather rare to use NaN in a program. It is the returned value when Math functions fail (Math.sqrt(-1)) or when a function trying to parse a number fails (parseInt("blabla")). Testing against NaN NaN compares unequal (via ==, !=, ===, and !==) to any other value -- including to another NaN value. Use Number.isNaN() or isNaN() to most clearly determine whether a value is NaN. Or perform a self-comparison: NaN, and only NaN, will co
in JavaScript Forum View Course » View Exercise 221 points Submitted by Bonnie Buckeye Phillips about 4 https://www.codecademy.com/en/forum_questions/50324d12ae0dc90002046192 years ago I am getting a NaN error. What does this mean? when I call the value of square "console.log(square(2))" I get a logical out put: 4. So I know that part of my code works. However, when I change it to print "console.log(cube(4))" all of a sudden I get an error " NaN. So the code must how to be breaking down here: ( the section I put in bold) But I just don't understand why. Any help would be appreciated, thanks! var square = function (x) { return x * x; }; var cube = function (x) { return x * square; }; console.log(cube(2)); 5 votes permalink Nan means "Not a number", this is because inside nan error in your cube function, you're not calling the square function, but getting it's contents. Change return x * square; with return x * square(x); and it should work. - Nico 3984 points Submitted by Nico Ekkart about 4 years ago 1 Comment Michael Donovan about 4 years ago May I ask why var square = function (x) { return x * x; }; var cube = function (x) { return (square * x); }; does not work? -3 votes permalink @Michael I would assume it is the same reasoning that @Nico just gave. Square is a function, so if you call just square you're calling that entire function and not an actual value. Square(x) passes a value through the parameter which is why that would work. So essentially, (square * x); is saying.. (square = function(x) { return x * x; }; * x) where square(3), x now equals 3 and it can do the math. Hope that makes a bit more sense. 770 points Submitted by Kevin Kendle about 4 years ago