Math.log10() function in JavaScript

@Buddy94Aug 27.2016

I’m using the Math.log10() function in JavaScript for logarithmic calculations. It works fine in Chrome, FireFox and Microsoft Edge, but when executing the same code in IE 11 I get an error saying ‘object doesn’t support property or method log10’. I was wondering if anyone had any ideas on why this occurs only in IE but not the other browsers and had a suggestion.

Thanks

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JavaScript

@shakazorbaAug 27.2016 — #Well, believe it or not

Math.log10() is not

supported in ie11

or older ?

@TrainAug 28.2016 — #Supported in Microsoft Edge (Edge browser). Also supported in Store apps (Microsoft Edge on Windows 10). See Version Information.

Not supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Not supported in Windows 8.1.

https://msdn.microsoft.com/en-us/library/mt179293(v=vs.94).aspx

@alexgm24May 30.2017 — #Math.log() is the neperian logarithm ([I]ln[/I]).

So you should use [B]Math.log(value)/Math.log(10)[/B] since [I]log10(X) = ln(X)/ln(10)[/I]

and Math.log() has much greater browser support.

@rootMay 30.2017 — #Make a workaround function.

It would be something like this,

if( typeof Math.log10 == "undefined" ){
 Object.prototype.log10 = function(n){
 return Math.log(n)/Math.log(10);
 }
 }

I tried Math.prototype and got errors, I tried Number.prototype and got errors, I tried Object.prototype with no errors and the following result.

The output is,

(using native) Math.log10( 45 ) = 1.6532125137753437

(using workaround) Math.log( 45 ) / Math.log(10) = 1.6532125137753435

Then any browsers not supporting Math.log10() will have an equivalent method that works.

Math.log10() function in JavaScript

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