CODEWITHSUNDEEP
javascript
Stanfrancisco
Stanfrancisco

Reputation: 352

Random number generator not printing numbers correctly

My JavaScript program is supposed to print out random numbers, between two max and min values given by the user. It works great with pre-input numbers, but as soon as I introduce the prompts to get max and min, the numbers start printing out funny.

var min, max, hmany, i;
var n, w, ans, rsp;


min = prompt("Minimum number for addition problems");
//console.log(min);
max = prompt("Maximum number for addition problems");
//console.log(max);
hmany = prompt("How many questions do you want to answer?");

 for (i = 0; i < 10; i++)
   {
     n = Math.floor(Math.random() * (max - min + 1)) + min;
     console.log(n);
   }

Sample Output:(when given 1 for min and 10 for max)

21
61
71
51
41
01
01
11
21
11

Upvotes: 0

Views: 52

Answers (1)

Denys S&#233;guret
Denys S&#233;guret

Reputation: 382102

Right now, you're doing operations on strings. And when the min is "1", what you do is

n = someOperation + "1",

which gives a string ending in "1".

You have to parse the strings to numbers :

min = parseFloat(prompt("Minimum number for addition problems"));

Upvotes: 3

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