Convert exponential notation of number (e+) to 10^ in JavaScript

March 1, 2021 by admin

I have a script, where I can convert gigs to megs to kilobytes to bytes to bits.

After that it uses the .toExponential function to turn it into scientific notation.

But I want it to change into an exponent, instead of it being +e# I want it to be ^#, any way I can change it to print that way instead, if not, anyway I can alter the string to change +e to ^?

Code:

console.log('calculator');
const gigabytes = 192;
console.log(`gigabytes equals ${gigabytes}`);
var megabytes = gigabytes * 1000;
console.log(`megabytes = ${megabytes}`);
var kilabytes = megabytes * 1000;
console.log (`kilabytes = ${kilabytes}`);
bytes = kilabytes * 1000;
console.log(`bytes = ${bytes}`);
bites = bytes * 8;
console.log(`bites are equal to ${bites}`);
console.log (bites.toExponential());

24 thoughts on “Convert exponential notation of number (e+) to 10^ in JavaScript”

You can just replace e+ with ^ using replace

console.log('calculator');
const gigabytes = 192;
console.log(`gigabytes equals ${gigabytes}`);
var megabytes = gigabytes * 1000;
console.log(`megabytes = ${megabytes}`);
var kilabytes = megabytes * 1000;
console.log (`kilabytes = ${kilabytes}`);
bytes = kilabytes * 1000;
console.log(`bytes = ${bytes}`);
bites = bytes * 8;
console.log(`bites are equal to ${bites}`);
console.log (bites.toExponential().replace(/e\+/g, '^'));

Instead of using

console.log(bites.toExponential);

You may need to use

bites = bites.toExponential;
console.log(bites.replace(“e+”, “*10^”);

Hope this helped!

You can use .replace:

const bytes = '1.536e+12'
console.log(convert(bytes))

const inputs = [
  '1.536e+12',
  '1.536e-12',
  '123',
  '-123',
  '123.456',
  '-123.456',
  '1e+1',
  '1e-1',
  '0e+0',
  '1e+0',
  '-1e+0'
]

function convert(value) {
  return value.replace(/e\+?/, ' x 10^')
}

inputs.forEach(i => console.log(convert(i)))