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javascript Programming Glossary: isnanObject comparison in JavaScript [duplicate] http://stackoverflow.com/questions/1068834/object-comparison-in-javascript x y var p remember that NaN NaN returns false and isNaN undefined returns true if isNaN x isNaN y typeof x 'number'.. NaN NaN returns false and isNaN undefined returns true if isNaN x isNaN y typeof x 'number' typeof y 'number' return true Compare.. returns false and isNaN undefined returns true if isNaN x isNaN y typeof x 'number' typeof y 'number' return true Compare primitives..
Detecting an “invalid date” Date instance in JavaScript http://stackoverflow.com/questions/1353684/detecting-an-invalid-date-date-instance-in-javascript d object Date return false return isNaN d.getTime javascript date share improve this question .. d object Date it is a date if isNaN d.getTime d.valueOf could also work date is not valid else date..
How can I format numbers as money in JavaScript? http://stackoverflow.com/questions/149055/how-can-i-format-numbers-as-money-in-javascript Number.prototype.formatMoney function c d t var n this c isNaN c Math.abs c 2 c d d undefined . d t t undefined t s n 0 i..
How to get hex color value rather than RGB value? http://stackoverflow.com/questions/1740700/how-to-get-hex-color-value-rather-than-rgb-value # hex rgb 1 hex rgb 2 hex rgb 3 function hex x return isNaN x 00 hexDigits x x 16 16 hexDigits x 16 SOURCE Kindness Dan..
Is there a (built-in) way in JavaScript to check if a string is a valid number? http://stackoverflow.com/questions/175739/is-there-a-built-in-way-in-javascript-to-check-if-a-string-is-a-valid-number of whether the variable contains is a string or number. isNaN num returns true if the variable does NOT contain a valid number.. if the variable does NOT contain a valid number Examples isNaN 123 false isNaN '123' false isNaN 'foo' true isNaN '10px' true.. does NOT contain a valid number Examples isNaN 123 false isNaN '123' false isNaN 'foo' true isNaN '10px' true Of course you..
Validate numbers in JavaScript - IsNumeric() http://stackoverflow.com/questions/18082/validate-numbers-in-javascript-isnumeric
How to check if a number is float or integer? http://stackoverflow.com/questions/3885817/how-to-check-if-a-number-is-float-or-integer
Are there are any side effects of using this method to convert a string to an integer http://stackoverflow.com/questions/8112757/are-there-are-any-side-effects-of-using-this-method-to-convert-a-string-to-an-in code it says this is a number.. var str 123 str str 1 if isNaN str alert 'Hello' Please let me know if there are any concerns.. NaN 'number' NaN NaN . Because of this awkwardness use isNaN to check whether a value is NaN . When to use which method parseFloat..
jQuery scroll() detect when user stops scrolling http://stackoverflow.com/questions/9144560/jquery-scroll-detect-when-user-stops-scrolling Array.apply null arguments var last args args.length 1 if isNaN last last 1 args.pop return on.apply this args var delay args.pop..
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