var x = Math.sqrt(-2); var y = Math.log(-1); console.log(x === y); // false Arrgh! var min=5, max = 10 alert( min + Math.random()*(max-min) ) Write the code to generate a random integer value between min and max, with both min,max as possible values. For example, division of zero by zero is not defined in mathematical sense, so it returns NaN. alert( 0 / 0 ) // NaN NaN has following properties: NaN is not equal to anything, including itself. have a peek here
alert(9999999999999999) The reason is, of course, precision loss. Forum New Posts FAQ Calendar Community Groups Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders What's New? From database errors, t… .NET Programming SQL CLR .Net Integration in 2015 (year not product version) Article by: Éric A long time ago (May 2011), I have written an article showing
What about… var x = Math.sqrt(-2); var y = Math.sqrt(-2); console.log(x == y); // false Even crazier: var x = Math.sqrt(-2); console.log(x == x); // false What about comparing two real Nan Error In Jquery Fortunately, for the upcoming ECMAScript 6, there is Number.isNaN() which provides a true NaN detection (BTW, you can already use this function in the latest version of Chrome and Firefox). As we all should know, exceptions are a mechanism for handling errors which are typically out of our control. Rounding One of most often operations with numbers is rounding.
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share|improve this answer answered Feb 26 '13 at 7:37 Denys Séguret 214k27416468 This seemed to help, thanks alot, the problem was that i got the roof_ridge out of a For example: alert( +" 12") // 12 alert( +" \n34 \n") // 34, newlines are whitespace symbols too If the value can't be converted to a number, the operation returns NaN: This forum is now read-only. Check This Out In maths, when you divide by 0, you get Infinity (or -Infinity).
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How to round numbers. Let’s compare two NaNs: var x = Math.sqrt(-2); var y = Math.log(-1); console.log(x == y); // false Maybe that’s because we’re supposed to use strict equal (===) operator instead? Change the browser, run it again. this contact form Are non-english speakers better protected from (international) Phishing?
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