Javascript Password Generator.

generatepassword.js

    function generatePassword() {
        var numCaps = 1;
        var numLower = 6;
        var numChars = 1;

        var stringLength = numCaps + numLower + numChars;
        var randomString = '';

        var caps = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];
        var lower = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];
        var chars = ['!','@','€','£','#','$','%','^','&','*','(',')','-','_','+','='];

        for(var i=0; i<numCaps; i++){
            var rcap = caps[Math.floor(Math.random()*caps.length)]
            randomString += rcap;
        }

        for(var i=0; i<numLower; i++){
            var rlow = lower[Math.floor(Math.random()*lower.length)]
            randomString += rlow;
        }

        for(var i=0; i<numChars; i++){
            var rchr = chars[Math.floor(Math.random()*chars.length)]
            randomString += rchr;
        }

        var genPassword = randomString.split('').sort(function(){return 0.5-Math.random()}).join('');
        console.log(genPassword);
    }