I'm creating a password generator of n length. The user deciedes the length by inputting a number. I'm having trouble with how to validate that 'num' is between the values of 6-25 also If the number entered by the user is valid, I want to use a for loop that iterates that number of times. In each iteration of the loop, randomly select one of the characters from the chars string and concatenate it to the password variable.

Here is my HTML

Generate a Strong Password

Number of characters:

Password:

JAVASCRIPT/ JQUERY

"use strict";

$(document).ready(function() {

var getRandomNumber = function(max) {

var random;

if (!isNaN(max)) {

random = Math.random(); //value >= 0.0 and < 1.0

random = Math.floor(random * max); //value is an integer between 0 and max - 1

random = random + 1; //value is an integer between 1 and max

}

return random;

};

$("#generate").click(function() {

var isValid = true;

var num = $("#num").val().trim();

//HELP

if(num.length < 6 & num.length > 25){

$("#num").next().text("Please enter a valid number 6 - 25");

isValid = false;

}else{

$("#num").next().text("");

}

$("#num").val(num);

if(isValid == "true"){

for(var i = 1; i <= num; i ++){

r = getRandomNumber().random;

}

$("#password").val(r);

}

//HELP

$("#password").val( "" ); // clear previous entry

var chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz_-+!@";

}); // end click()

$("#clear").click(function() {

$("#num").val( "" );

$("#password").val( "" );

$("#num").focus();

}); // end click()

// set focus on initial load

$("#num").focus();

}); // end ready()