JavaScript - New Array via prompt

I am new to learning JS and am trying to create an array through a prompt. It seems to work, but I believe it is treating the prompted numbers as strings not numbers. I am parsing the negatives and zeros, and positives and counting them. It doesn't recognize the negative sign.

Here's my js:

function counter()
{
var numArr = new Array(Number(prompt("Please enter and array of numbers, in any order, separated by a comma..." + '\n' +
"In the following format: -2,0,2")));

var positives = 0;
var negatives = 0;
var zeros = 0;

for (var i = 0; i < numArr.length; i++)
{
switch (true) {

case numArr[i] < 0:
negatives++;
break;
case numArr[i] == 0:
zeros++;
break;
case numArr[i] > 0:
positives++;
break;
}
}
alert("You entered:"+ '\n' +
"Number of Negatives: " + negatives + '\n' +
"Number of Zeros: " + zeros + '\n' +
"Number of Positives: " + positives);
}
counter();



Any suggestions?

The values returned by prompts and form elements are strings and you need to apply the functions parseInt or parseFloat to them to convert them to numbers.

elresleff is already converting the prompt input to numbers by using Number(). The problem is the prompt is expecting the input to be a comma delimited numbers and he/she is converting the whole string as a number which obviously will not work.

elresleff, you need to split the input to form an array then convert each string to number before the switch statement.


var input = prompt("Please enter and array of numbers, in any order, separated by a comma..." + '\n' +
"In the following format: -2,0,2", "");
var numArr = [];
if (input){
numArr = input.split(',');
}

for (var i = 0; i < numArr.length; i++) {
var num = Number(numArr[i]);
switch (true) {
case num < 0:
negatives++;
break;
case num == 0:
zeros++;
break;
case num > 0:
positives++;
break;
}
}
alert("You entered:"+ '\n' +
"Number of Negatives: " + negatives + '\n' +
"Number of Zeros: " + zeros + '\n' +
"Number of Positives: " + positives);

Many thanks Glenn... I do remember seeing the input.split in an example. Thanks for showing it to me in use!

Ed