Random Password Generator using HTML, CSS and JavaScript – Coding Torque

Share your love

Hello Guys! Welcome to Coding Torque. In this blog, we are going to create a Random Password Generator using HTML, CSS and JavaScript. You should create this project if you are a beginner and learning JavaScript.

Before we start, here are some JavaScript Games you might like to create:

1.Ā Snake Game using JavaScript

2.Ā 2D Bouncing Ball Game using JavaScript

3.Ā Rock Paper Scissor Game using JavaScript

4.Ā Tic Tac Toe Game using JavaScript

5. Whack a Mole Game using JavaScript

I would recommend you don’t just copy and paste the code, just look at the code and type by understanding it.

 

HTML CodeĀ 

Starter Template

<!doctype html>
<html lang="en">

<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- CSS -->
    <link rel="stylesheet" href="style.css">

    <title>Random Strong Password Generator using JavaScript with Source Code - @code.scientist x @codingtorque</title>
</head>

<body>
    <!-- Further code here -->

    <script src="script.js"></script>
</body>

</html>

Paste the below code in your <body> tag

<div class="container">
    <h2 class="title">Password Generator</h2>
    <div class="result">
        <div class="result__title field-title">Generated Password</div>
        <div class="result__info right">click to copy</div>
        <div class="result__info left">copied</div>
        <div class="result__viewbox" id="result">CLICK GENERATE</div>
        <button id="copy-btn" style="--x: 0; --y: 0"><i class="far fa-copy"></i></button>
    </div>
    <div class="length range__slider" data-min="4" data-max="32">
        <div class="length__title field-title" data-length='0'>length:</div>
        <input id="slider" type="range" min="4" max="32" value="16" />
    </div>

    <div class="settings">
        <span class="settings__title field-title">settings</span>
        <div class="setting">
            <input type="checkbox" id="uppercase" checked />
            <label for="uppercase">Include Uppercase</label>
        </div>
        <div class="setting">
            <input type="checkbox" id="lowercase" checked />
            <label for="lowercase">Include Lowercase</label>
        </div>
        <div class="setting">
            <input type="checkbox" id="number" checked />
            <label for="number">Include Numbers</label>
        </div>
        <div class="setting">
            <input type="checkbox" id="symbol" />
            <label for="symbol">Include Symbols</label>
        </div>
    </div>

    <button class="btn generate" id="generate">Generate Password</button>
</div>

CSS CodeĀ 

Create a fileĀ style.css and paste the code below.

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    width: 100%;
    height: 100vh;
    background-image: linear-gradient(to top, #209cff 100%, #68e0cf 200%);
    display: flex;
    justify-content: center;
    align-items: center;
}
button {
    border: 0;
    outline: 0;
}

.container {
    margin: 40px 0;
    width: 400px;
    height: 600px;
    padding: 10px 25px;
    background: #0a0e31;
    border-radius: 10px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.45), 0 4px 8px rgba(0, 0, 0, 0.35), 0 8px 12px rgba(0, 0, 0, 0.15);
    font-family: "Montserrat";
    h2.title {
        font-size: 1.75rem;
        margin: 10px -5px;
        margin-bottom: 30px;
        color: #fff;
    }
}

$field-color: rgba(255, 255, 255, 0.08);
$field-height: 65px;
$field-border-radius: 8px;

.result {
    position: relative;
    width: 100%;
    height: 65px;
    overflow: hidden;
    &__info {
        &.right {
            right: 8px;
        }
        &.left {
            left: 8px;
        }
        position: absolute;
        bottom: 4px;
        color: #fff;
        font-size: 0.8rem;
        transition: all 150ms ease-in-out;
        transform: translateY(200%);
        opacity: 0;
    }
    &__viewbox {
        width: 100%;
        height: 100%;
        background: $field-color;
        border-radius: $field-border-radius;
        color: #fff;
        text-align: center;
        line-height: 65px;
    }
    #copy-btn {
        position: absolute;
        top: var(--y);
        left: var(--x);
        width: 38px;
        height: 38px;
        background: #fff;
        border-radius: 50%;
        opacity: 0;
        transform: translate(-50%, -50%) scale(0);
        transition: all 350ms cubic-bezier(0.175, 0.885, 0.32, 1.275);
        cursor: pointer;
        z-index: 2;
        &:active {
            box-shadow: 0 0 0 200px rgba(255, 255, 255, 0.08);
        }
    }
    &:hover {
        #copy-btn {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1.35);
        }
    }
}
.field-title {
    position: absolute;
    top: -10px;
    left: 8px;
    transform: translateY(-50%);
    font-weight: 800;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
    font-size: 0.65rem;
    pointer-events: none;
    user-select: none;
}

.options {
    width: 100%;
    height: auto;
    margin: 50px 0;
}
.range__slider {
    position: relative;
    width: 100%;
    height: calc(#{$field-height} - 10px);
display: flex;
justify-content: center;
align-items: center;
background: $field-color;
border-radius: $field-border-radius;
margin: 30px 0;

&::before,
&::after {
    position: absolute;
    color: #fff;
    font-size: 0.9rem;
    font-weight: bold;
}
&::before {
    content: attr(data-min);
    left: 10px;
}
&::after {
    content: attr(data-max);
    right: 10px;
}
.length__title::after {
    content: attr(data-length);
    position: absolute;
    right: -16px;
    font-variant-numeric: tabular-nums;
    color: #fff;
}
}

$range-handle-color: rgb(255, 255, 255) !default;
$range-handle-color-hover: rgb(212, 212, 212) !default;
$range-handle-size: 20px !default;

$range-track-color: rgba(255, 255, 255, 0.314) !default;
$range-track-height: 2px !default;

$range-label-width: 60px !default;

#slider {
    -webkit-appearance: none;
    width: calc(100% - (#{$range-label-width + 10px}));
    height: $range-track-height;
    border-radius: 5px;
    background: $range-track-color;
    outline: none;
    padding: 0;
    margin: 0;
    cursor: pointer;

    // Range Handle
    &::-webkit-slider-thumb {
        -webkit-appearance: none;
        width: $range-handle-size;
        height: $range-handle-size;
        border-radius: 50%;
        background: $range-handle-color;
        cursor: pointer;
        transition: all 0.15s ease-in-out;
        &:hover {
            background: $range-handle-color-hover;
            transform: scale(1.2);
        }
    }
    &::-moz-range-thumb {
        width: $range-handle-size;
        height: $range-handle-size;
        border: 0;
        border-radius: 50%;
        background: $range-handle-color;
        cursor: pointer;
        transition: background 0.15s ease-in-out;
        &:hover {
            background: $range-handle-color-hover;
        }
    }
}

.settings {
    position: relative;
    height: auto;
    widows: 100%;
    display: flex;
    flex-direction: column;

    .setting {
        position: relative;
        width: 100%;
        height: calc(#{$field-height} - 10px);
    background: $field-color;
    border-radius: $field-border-radius;
    display: flex;
    align-items: center;
    padding: 10px 25px;
    color: #fff;
    margin-bottom: 8px;
    input {
        opacity: 0;
        position: absolute;
        + label {
            user-select: none;
            &::before,
            &::after {
                content: "";
                position: absolute;
                transition: 150ms cubic-bezier(0.24, 0, 0.5, 1);
                transform: translateY(-50%);
                top: 50%;
                right: 10px;
                cursor: pointer;
            }
            &::before {
                height: 30px;
                width: 50px;
                border-radius: 30px;
                background: rgba(214, 214, 214, 0.434);
            }
            &::after {
                height: 24px;
                width: 24px;
                border-radius: 60px;
                right: 32px;
                background: #fff;
            }
        }
        &:checked {
            & + label:before {
                background: #5d68e2;
                transition: all 150ms cubic-bezier(0, 0, 0, 0.1);
            }
            & + label:after {
                right: 14px;
            }
        }
        &:focus {
            + label:before {
                box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.75);
            }
        }
        &:disabled{
            + label{
                &:before, &:after{ cursor: not-allowed }
                &:before{ background: #4f4f6a }
                &:after{ background: #909090 }
            }
        }
    }
}
}

.btn.generate {
    user-select: none;
    position: relative;
    width: 100%;
    height: 50px;
    margin: 10px 0;
    border-radius: $field-border-radius;
    color: #fff;
    border: none;
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    letter-spacing: 1px;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 150ms ease;
    &:active {
        transform: translateY(-3%);
        box-shadow: 0 4px 8px rgba(255, 255, 255, 0.08);
    }
}



.support{
    position: fixed;
    right: 10px;
    bottom: 10px;
    padding: 10px;
    display: flex;
}
a{
    margin: 0 20px;
    color: #fff;
    font-size: 2rem;
    transition: all 400ms ease;
}

a:hover{
    color: #222;
}

.github-corner svg{
    position:absolute;
    right:0;
    top:0;
    mix-blend-mode:darken;
    color:#eeeeee;
    fill:#353535;
    clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.github-corner:hover .octo-arm{
    animation:octocat-wave .56s;
}
@keyframes octocat-wave{
    0%, 100%{
        transform:rotate(0);
    }
    20%, 60%{
        transform:rotate(-20deg);
    }
    40%, 80%{
        transform:rotate(10deg);
    }
}

Output Till Now

random password generator using javascript with source code

JavaScript CodeĀ 

Create a fileĀ script.jsĀ and paste the code below.
// This is a simple Password Generator App that will generate random password maybe you can you them to secure your account.
// I tried my best to make the code as simple as possible please dont mind the variable names.
// Also this idea came in my mind after checking Traversy Media's latest video.

// Clear the concole on every refresh
console.clear();
// set the body to full height
// document.body.style.height = `${innerHeight}px`

// Range Slider Properties.
// Fill : The trailing color that you see when you drag the slider.
// background : Default Range Slider Background
const sliderProps = {
    fill: "#0B1EDF",
    background: "rgba(255, 255, 255, 0.214)",
};

// Selecting the Range Slider container which will effect the LENGTH property of the password.
const slider = document.querySelector(".range__slider");

// Text which will show the value of the range slider.
const sliderValue = document.querySelector(".length__title");

// Using Event Listener to apply the fill and also change the value of the text.
slider.querySelector("input").addEventListener("input", event => {
    sliderValue.setAttribute("data-length", event.target.value);
    applyFill(event.target);
});
// Selecting the range input and passing it in the applyFill func.
applyFill(slider.querySelector("input"));
// This function is responsible to create the trailing color and setting the fill.
function applyFill(slider) {
    const percentage = (100 * (slider.value - slider.min)) / (slider.max - slider.min);
    const bg = `linear-gradient(90deg, ${sliderProps.fill} ${percentage}%, ${sliderProps.background} ${percentage +
            0.1}%)`;
    slider.style.background = bg;
    sliderValue.setAttribute("data-length", slider.value);
}

// Object of all the function names that we will use to create random letters of password
const randomFunc = {
    lower: getRandomLower,
    upper: getRandomUpper,
    number: getRandomNumber,
    symbol: getRandomSymbol,
};

// Random more secure value
function secureMathRandom() {
    return window.crypto.getRandomValues(new Uint32Array(1))[0] / (Math.pow(2, 32) - 1);
}

// Generator Functions
// All the functions that are responsible to return a random value taht we will use to create password.
function getRandomLower() {
    return String.fromCharCode(Math.floor(Math.random() * 26) + 97);
}
function getRandomUpper() {
    return String.fromCharCode(Math.floor(Math.random() * 26) + 65);
}
function getRandomNumber() {
    return String.fromCharCode(Math.floor(secureMathRandom() * 10) + 48);
}
function getRandomSymbol() {
    const symbols = '~!@#$%^&*()_+{}":?><;.,';
    return symbols[Math.floor(Math.random() * symbols.length)];
}

// Selecting all the DOM Elements that are necessary -->

// The Viewbox where the result will be shown
const resultEl = document.getElementById("result");
// The input slider, will use to change the length of the password
const lengthEl = document.getElementById("slider");

// Checkboxes representing the options that is responsible to create differnt type of password based on user
const uppercaseEl = document.getElementById("uppercase");
const lowercaseEl = document.getElementById("lowercase");
const numberEl = document.getElementById("number");
const symbolEl = document.getElementById("symbol");

// Button to generate the password
const generateBtn = document.getElementById("generate");
// Button to copy the text
const copyBtn = document.getElementById("copy-btn");
// Result viewbox container
const resultContainer = document.querySelector(".result");
// Text info showed after generate button is clicked
const copyInfo = document.querySelector(".result__info.right");
// Text appear after copy button is clicked
const copiedInfo = document.querySelector(".result__info.left");

// if this variable is trye only then the copyBtn will appear, i.e. when the user first click generate the copyBth will interact.
let generatedPassword = false;

// Update Css Props of the COPY button
// Getting the bounds of the result viewbox container
let resultContainerBound = {
    left: resultContainer.getBoundingClientRect().left,
    top: resultContainer.getBoundingClientRect().top,
};
// This will update the position of the copy button based on mouse Position
resultContainer.addEventListener("mousemove", e => {
    resultContainerBound = {
        left: resultContainer.getBoundingClientRect().left,
        top: resultContainer.getBoundingClientRect().top,
    };
    if(generatedPassword){
        copyBtn.style.opacity = '1';
        copyBtn.style.pointerEvents = 'all';
        copyBtn.style.setProperty("--x", `${e.x - resultContainerBound.left}px`);
        copyBtn.style.setProperty("--y", `${e.y - resultContainerBound.top}px`);
    }else{
        copyBtn.style.opacity = '0';
        copyBtn.style.pointerEvents = 'none';
    }
});
window.addEventListener("resize", e => {
    resultContainerBound = {
        left: resultContainer.getBoundingClientRect().left,
        top: resultContainer.getBoundingClientRect().top,
    };
});

// Copy Password in clipboard
copyBtn.addEventListener("click", () => {
    const textarea = document.createElement("textarea");
    const password = resultEl.innerText;
    if (!password || password == "CLICK GENERATE") {
        return;
    }
    textarea.value = password;
    document.body.appendChild(textarea);
    textarea.select();
    document.execCommand("copy");
    textarea.remove();

    copyInfo.style.transform = "translateY(200%)";
    copyInfo.style.opacity = "0";
    copiedInfo.style.transform = "translateY(0%)";
    copiedInfo.style.opacity = "0.75";
});

// When Generate is clicked Password id generated.
generateBtn.addEventListener("click", () => {
    const length = +lengthEl.value;
    const hasLower = lowercaseEl.checked;
    const hasUpper = uppercaseEl.checked;
    const hasNumber = numberEl.checked;
    const hasSymbol = symbolEl.checked;
    generatedPassword = true;
    resultEl.innerText = generatePassword(length, hasLower, hasUpper, hasNumber, hasSymbol);
    copyInfo.style.transform = "translateY(0%)";
    copyInfo.style.opacity = "0.75";
    copiedInfo.style.transform = "translateY(200%)";
    copiedInfo.style.opacity = "0";
});

// Function responsible to generate password and then returning it.
function generatePassword(length, lower, upper, number, symbol) {
    let generatedPassword = "";
    const typesCount = lower + upper + number + symbol;
    const typesArr = [{ lower }, { upper }, { number }, { symbol }].filter(item => Object.values(item)[0]);
    if (typesCount === 0) {
        return "";
    }
    for (let i = 0; i < length; i++) {
        typesArr.forEach(type => {
            const funcName = Object.keys(type)[0];
            generatedPassword += randomFunc[funcName]();
        });
    }
    return generatedPassword.slice(0, length)
                                    .split('').sort(() => Math.random() - 0.5)
                                    .join('');
}

// function that handles the checkboxes state, so at least one needs to be selected. The last checkbox will be disabled.
function disableOnlyCheckbox(){
    let totalChecked = [uppercaseEl, lowercaseEl, numberEl, symbolEl].filter(el => el.checked)
    totalChecked.forEach(el => {
        if(totalChecked.length == 1){
            el.disabled = true;
        }else{
            el.disabled = false;
        }
    })
}

[uppercaseEl, lowercaseEl, numberEl, symbolEl].forEach(el => {
    el.addEventListener('click', () => {
        disableOnlyCheckbox()
    })
})

 

Written by: Piyush Patil
If you have any doubts or any project ideas feel free to Contact Us
Hope you find this post helpfulšŸ’–
Share your love