I wanted to display a number to 2 decimal places.  I thought I could use toPrecision(2) in JavaScript .  However, if the number is 0.05, I get 0.0500. I'd rather it stay the same.  See it on JSbin.  What is the best way to do this?  I can think...
I am making a webpage that displays the digits of pi. I was able to get my pi variable to display 20 digits of pi using the toFixed method but I am wondering if I can display more. Is the number of decimal places limited by the memory size of my vari...
I heard that you could right-shift a number by .5 instead of using Math.floor(). I decided to check its limits to make sure that it was a suitable replacement, so I checked the following values and got the following results in Google Chrome:   2.5 &g...
I'm new to JavaScript and just discovered toFixed() and toPrecision() to round numbers. However, I can't figure out what the difference between the two is.  What is the difference between number.toFixed() and number.toPrecision()?...
I want to generate a really large random number. I don't need this number to be cryptographically secure. Hence, I'm not using crypto.getRandomValues. Currently, I'm generating the random number as follows:    const random = length =>...
Number 6.35 can't be accurately represented:  alert( 6.35.toFixed(20) ); // 6.34999999999999964473   But why 6.35 * 10 == 63.5 is true?   6.35 is not accurate, 10 is accurate, and 63.5 is accurate. I can't understand how (inaccurate * accurat...
It seems django, or the sqlite database, is storing datetimes with microsecond precision. However when passing a time to javascript the Date object only supports milliseconds:  var stringFromDjango = "2015-08-01 01:24:58.520124+10:00"; var ti...
In javascipt I have av floating point "a" like this:  var a = 5.;   Now I want a new number "b" that is barely larger than "a". I could do this:  var b = a + 1.e-10;   But what if "a" is a really small number?  var a =...
Javascript's toPrecision rounds half up so  (123.46).toPrecision(4)    // 123.5 (123.44).toPrecision(4)    // 123.4   But what is a straightforward method to choose the direction of the rounding (up/ceil or down/floor)? so  (123.46).toPrecisionFl...
When I run, Number(123456789012345.12).toFixed(3), it is returning "123456789012345.125" as a String.  Where is last 5 (in the decimal) coming from?  I would have expected it to return "123456789012345.120".  I executed this code on M...

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