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javascript Programming Glossary: nan

Object comparison in JavaScript [duplicate]

http://stackoverflow.com/questions/1068834/object-comparison-in-javascript

function compare2Objects x y var p remember that NaN NaN returns false and isNaN undefined returns true if isNaN.. function compare2Objects x y var p remember that NaN NaN returns false and isNaN undefined returns true if isNaN x isNaN.. x y var p remember that NaN NaN returns false and isNaN undefined returns true if isNaN x isNaN y typeof x 'number'..

javascript - Array#map and parseInt

http://stackoverflow.com/questions/262427/javascript-arraymap-and-parseint

Why then does this '1' '2' '3' .map parseInt yield this 1 NaN NaN I have tested in Firefox 3.0.1 and Chrome 0.3 and just as.. then does this '1' '2' '3' .map parseInt yield this 1 NaN NaN I have tested in Firefox 3.0.1 and Chrome 0.3 and just as a..

Remove empty elements from an array in Javascript

http://stackoverflow.com/questions/281264/remove-empty-elements-from-an-array-in-javascript

example removes every falsy value undefined null 0 false NaN and '' function cleanArray actual var newArray new Array for..

What does “options = options || {}” mean in Javascript?

http://stackoverflow.com/questions/2851404/what-does-options-options-mean-in-javascript

How to check for “undefined” in JavaScript?

http://stackoverflow.com/questions/3390396/how-to-check-for-undefined-in-javascript

include these falsy values so it's not very robust false 0 NaN null undefined Thanks to @CMS for pointing out that your third..

Difference between == and === in JavaScript [duplicate]

http://stackoverflow.com/questions/523643/difference-between-and-in-javascript

they are numerically equal have the same number value . NaN is not equal to anything including NaN. Positive and negative.. same number value . NaN is not equal to anything including NaN. Positive and negative zeros are equal to one another. Two Boolean..

What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for CodeMash 2012?

http://stackoverflow.com/questions/9032856/what-is-the-explanation-for-these-bizarre-javascript-behaviours-mentioned-in-the

Maybe my JSFiddle is wrong. Array 16 .join wat 1 result NaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaN Doing wat 1 results.. Maybe my JSFiddle is wrong. Array 16 .join wat 1 result NaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaN Doing wat 1 results.. my JSFiddle is wrong. Array 16 .join wat 1 result NaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaNNaN Doing wat 1 results in..