Answer 1

+""
you got it!

Answer 2

convert number to string by concatenating the number to an empty string. it's a pair of double quotes "", but you can also use a pair of single quotes ''.
you can use toString() too, but I'm lazy...
using string templates seems to be faster, though...

https://dev.to/sanchithasr/5-ways-to-convert-number-to-string-3fhd

https://i.stack.imgur.com/mPxVd.png

Answer 3

Swap second and first. Also tell the user what they are entering ie min or max

Answer 4

To generate random numbers within a range use a function that takes two arguments(max, min) and return Math.random(max-min) + min

Answer 5

Your Mom
function convert() {
let min = ~~document.getElementById("num1").value;
let max = ~~document.getElementById("num2").value;
min = Math.ceil(min);
max = Math.floor(max);
document.getElementById("demo").innerHTML = Math.floor(Math.random() * (max - min + 1)) + min + "";
}

converting to number(using ~~) and converting to string(using +"") seems to make the button click more responsive, too.

Answer 6

~~ is a risky shortcut to convert to number. Probably better to use Number(....), but Number returns a Nan for invalid inputs while ~~ converts it to 0.

Javascript will convert values into strings when doing string concatenation, so + '' (an empty string) will convert the number to string.

Might be a good idea to use type="number" for the inputs to prevent invalid string inputs.

https://stackoverflow.com/questions/4055633/what-does-double-tilde-do-in-javascript

Answer 7

Sajjad Cheraghi with out the +1 in (max-min) the max is not inclusive. Remember math.random always produces a number less than 1 not one inclusive.

Answer 8

Math.random always returns a number less than 1 you have to make an adjustment to the random

math.floor(math.round() * ((max - min + 1) + min)

Answer 9

https://code.sololearn.com/WiZP0KD0SHkW/?ref=app

Answer 10

Yes you will still use math.floor as well so you can round the decimal that math.round creates. You will then * by the range you want.

math.floor(math.round() * 100)

Is random 0 to 99.

Answer 11

Look at your math.round()

It needs to be:

math.round() * ((max - min + 1) + min)

You have:

math.random() * max, min

Answer 12

Almost you have one ) in the wrong spot. Look at (max - min +1) + min

Answer 13

Let's build it:

math.floor()

math.floor(math.round())

math.floor(math.round() * ())

math.floor(math.round() * (()))

math.floor(math.round() * ((max - min + 1) + min))

Answer 14

Awesome have fun see ya around.

Answer 15

Your Mom
put the entire thing inside the function so it updates everytime the button is clicked. Also, you want the value, not the input element.

function convert() {
let firstNumber = document.getElementById("num1").value;
let secondNumber = document.getElementById("num2").value;
let result = Math.floor(Math.random() * (secondNumber - firstNumber + 1) + firstNumber); document.getElementById("demo").innerHTML = result;
}

Answer 16

yes,
and maybe it is gibberish now, but it will make sense as you learn more.
Keep learning!

Answer 17

well, the innerHTML is expecting a string.

Answer 18

a number is well, a number. like 1
a string is a string, like "1"

the value of an input element is a string,
even if you use type="number".
you need numbers for calculation, so you convert the string to number.
your innerHTML expects a string, so you convert the result back to string.

types are really loosely implemented in javascript. So it would probably not choke if you mess those up, ...probably... . But type correctness is something to watch out for.

Answer 19

but in this case we are mis-using it to convert string to number
string --> number
~~"3" becomes 3

Answer 20

use console.log
experiment...

its -4