# Tag: numbers

## How to output numbers with leading zeros in JavaScript? (satoshi format)

Is there a way to prepend leading zeros and a dot to numbers so that it results in a string of fixed length? For example: 1 becomes “0.00000001 BTC”. 498 becomes “0.00000498 BTC”.

## Extract Numbers from Array mixed with strings – Javascript

I have an array from strings and numbers. I need to sort the numbers or better to extract only the numbers in another array. Here is the example: const myArr = [‘Prihodi 23456 danaci 34 razhodi …

## Mapping Array in Javascript with sequential numbers

The following code: Creates the following Array: I just don’t understand why. I can’t find anything on the internet that explains this behavior. Does anyone know why this works the way it does? Perhaps a link to some documentation? AdvertisementAnswer creates an array of length 10 with all elements being undefined. will invoke Number.call for […]

## Convert number to alphabet letter

I want to convert a number to its corresponding alphabet letter. For example: 1 = A 2 = B 3 = C Can this be done in javascript without manually creating the array? In php there is a range() function …

## HTML input type=”number” still returning a string when accessed from javascript

I’m new to javascript , I’m trying learning how functions etc in JS and trying to add 2 numbers If I remove the parseInt() the value is treated as a string only , then what is the point of using <input type=”number”> ?please explain to me. what field to use for getting input as a number? Answer It’s normal you

## How do I convert an integer to binary in JavaScript?

I’d like to see integers, positive or negative, in binary. Rather like this question, but for JavaScript.

## Format a number as 2.5K if a thousand or more, otherwise 900

I need to show a currency value in the format of 1K of equal to one thousand, or 1.1K, 1.2K, 1.9K etc, if its not an even thousands, otherwise if under a thousand, display normal 500, 100, 250 etc, …

## JavaScript numbers to Words

I’m trying to convert numbers into english words, for example 1234 would become: “one thousand two hundred thirty four”. My Tactic goes like this: Separate the digits to three and put them on Array (…

## Converting hexadecimal to float in JavaScript

I would like to convert a number in base 10 with fraction to a number in base 16. All is well there. Now I want to convert it back to decimal. But now I cannot write: As it doesn’t return the decimal part. And I cannot use parseFloat, since per MDC, the syntax of parseFloat is It wouldn’t have been

## Comparing negative numbers in javascript

I’m sure this is a simple problem, but I’m comparing negative numbers in javascript i.e.: This script will always take action 2, even though num1 is less than num2. Whats going on here? Answer How does if (parseFloat(num1) < parseFloat(num2)) work? Maybe your numbers are turning into strings somewhere.