Password Generator Tool Code HTML CSS JavaScript

                Copy Your Code 

HTML

      <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

* {

    margin: 0;

    padding: 0;

    -webkit-box-sizing: border-box;

            box-sizing: border-box;

  }

  

  body {

    width: 100%;

    height: 100%;

    background-color: #666666;

    display: -webkit-box;

    display: -ms-flexbox;

    display: flex;

    -webkit-box-pack: center;

        -ms-flex-pack: center;

            justify-content: center;

    -webkit-box-align: center;

        -ms-flex-align: center;

            align-items: center;

  }

  

  button {

    border: 0;

    outline: 0;

  }

  

  .container {

    margin: 40px 0;

    width: 400px;

    height: 600px;

    padding: 10px 25px;

    background: linear-gradient(0deg, rgba(0, 0, 0, 0.0001) -0.77%, rgba(0, 0, 0, 0.4) 100.77%), rgba(170, 170, 170, 0.0001);

    border-radius: 10px;

    -webkit-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);

            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";

  }

  

  .container h2.title {

    font-size: 1.75rem;

    margin: 10px -5px;

    margin-bottom: 30px;

    color: #fff;

    text-align: center;

  }

  

  .result {

    position: relative;

    width: 100%;

    height: 65px;

    overflow: hidden;

  }

  

  .result__info {

    position: absolute;

    bottom: 4px;

    color: #fff;

    font-size: 0.8rem;

    -webkit-transition: all 150ms ease-in-out;

    transition: all 150ms ease-in-out;

    -webkit-transform: translateY(200%);

            transform: translateY(200%);

    opacity: 0;

  }

  

  .result__info.right {

    right: 8px;

  }

  

  .result__info.left {

    left: 8px;

  }

  

  .result__viewbox {

    width: 100%;

    height: 100%;

    background: rgba(255, 255, 255, 0.08);

    border-radius: 8px;

    color: #fff;

    text-align: center;

    line-height: 65px;

  }

  

  .result #copy-btn {

    position: absolute;

    top: var(--y);

    left: var(--x);

    width: 38px;

    height: 38px;

    background: #fff;

    border-radius: 50%;

    opacity: 0;

    -webkit-transform: translate(-50%, -50%) scale(0);

            transform: translate(-50%, -50%) scale(0);

    -webkit-transition: all 350ms cubic-bezier(0.175, 0.885, 0.32, 1.275);

    transition: all 350ms cubic-bezier(0.175, 0.885, 0.32, 1.275);

    cursor: pointer;

    z-index: 2;

  }

  

  .result #copy-btn:active {

    -webkit-box-shadow: 0 0 0 200px rgba(255, 255, 255, 0.08);

            box-shadow: 0 0 0 200px rgba(255, 255, 255, 0.08);

  }

  

  .result:hover #copy-btn {

    opacity: 1;

    -webkit-transform: translate(-50%, -50%) scale(1.35);

            transform: translate(-50%, -50%) scale(1.35);

  }

  

  .field-title {

    position: absolute;

    top: -10px;

    left: 8px;

    -webkit-transform: translateY(-50%);

            transform: translateY(-50%);

    font-weight: 800;

    color: rgba(255, 255, 255, 0.5);

    text-transform: uppercase;

    font-size: 0.65rem;

    pointer-events: none;

    -webkit-user-select: none;

       -moz-user-select: none;

        -ms-user-select: none;

            user-select: none;

  }

  

  .options {

    width: 100%;

    height: auto;

    margin: 50px 0;

  }

  

  .range__slider {

    position: relative;

    width: 100%;

    height: calc(65px - 10px);

    display: -webkit-box;

    display: -ms-flexbox;

    display: flex;

    -webkit-box-pack: center;

        -ms-flex-pack: center;

            justify-content: center;

    -webkit-box-align: center;

        -ms-flex-align: center;

            align-items: center;

    background: rgba(255, 255, 255, 0.08);

    border-radius: 8px;

    margin: 30px 0;

  }

  

  .range__slider::before, .range__slider::after {

    position: absolute;

    color: #fff;

    font-size: 0.9rem;

    font-weight: bold;

  }

  

  .range__slider::before {

    content: attr(data-min);

    left: 10px;

  }

  

  .range__slider::after {

    content: attr(data-max);

    right: 10px;

  }

  

  .range__slider .length__title::after {

    content: attr(data-length);

    position: absolute;

    right: -16px;

    font-variant-numeric: tabular-nums;

    color: #fff;

  }

  

  #slider {

    -webkit-appearance: none;

    width: calc(100% - (70px));

    height: 2px;

    border-radius: 5px;

    background: rgba(255, 255, 255, 0.314);

    outline: none;

    padding: 0;

    margin: 0;

    cursor: pointer;

  }

  

  #slider::-webkit-slider-thumb {

    -webkit-appearance: none;

    width: 20px;

    height: 20px;

    border-radius: 50%;

    background: white;

    cursor: pointer;

    -webkit-transition: all 0.15s ease-in-out;

    transition: all 0.15s ease-in-out;

  }

  

  #slider::-webkit-slider-thumb:hover {

    background: #d4d4d4;

    -webkit-transform: scale(1.2);

            transform: scale(1.2);

  }

  

  #slider::-moz-range-thumb {

    width: 20px;

    height: 20px;

    border: 0;

    border-radius: 50%;

    background: white;

    cursor: pointer;

    -webkit-transition: background 0.15s ease-in-out;

    transition: background 0.15s ease-in-out;

  }

  

  #slider::-moz-range-thumb:hover {

    background: #d4d4d4;

  }

  

  .settings {

    position: relative;

    height: auto;

    widows: 100%;

    display: -webkit-box;

    display: -ms-flexbox;

    display: flex;

    -webkit-box-orient: vertical;

    -webkit-box-direction: normal;

        -ms-flex-direction: column;

            flex-direction: column;

  }

  

  .settings .setting {

    position: relative;

    width: 100%;

    height: calc(65px - 10px);

    background: rgba(255, 255, 255, 0.08);

    border-radius: 8px;

    display: -webkit-box;

    display: -ms-flexbox;

    display: flex;

    -webkit-box-align: center;

        -ms-flex-align: center;

            align-items: center;

    padding: 10px 25px;

    color: #fff;

    margin-bottom: 8px;

  }

  

  .settings .setting input {

    opacity: 0;

    position: absolute;

  }

  

  .settings .setting input + label {

    -webkit-user-select: none;

       -moz-user-select: none;

        -ms-user-select: none;

            user-select: none;

  }

  

  .settings .setting input + label::before, .settings .setting input + label::after {

    content: "";

    position: absolute;

    -webkit-transition: 150ms cubic-bezier(0.24, 0, 0.5, 1);

    transition: 150ms cubic-bezier(0.24, 0, 0.5, 1);

    -webkit-transform: translateY(-50%);

            transform: translateY(-50%);

    top: 50%;

    right: 10px;

    cursor: pointer;

  }

  

  .settings .setting input + label::before {

    height: 30px;

    width: 50px;

    border-radius: 30px;

    background: rgba(214, 214, 214, 0.434);

  }

  

  .settings .setting input + label::after {

    height: 24px;

    width: 24px;

    border-radius: 60px;

    right: 32px;

    background: #fff;

  }

  

  .settings .setting input:checked + label:before {

    background: #5d68e2;

    -webkit-transition: all 150ms cubic-bezier(0, 0, 0, 0.1);

    transition: all 150ms cubic-bezier(0, 0, 0, 0.1);

  }

  

  .settings .setting input:checked + label:after {

    right: 14px;

  }

  

  .settings .setting input:focus + label:before {

    -webkit-box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.75);

            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.75);

  }

  

  .btn.generate {

    -webkit-user-select: none;

       -moz-user-select: none;

        -ms-user-select: none;

            user-select: none;

    position: relative;

    width: 100%;

    height: 50px;

    margin: 10px 0;

    border-radius: 8px;

    color: #fff;

    border: none;

    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    letter-spacing: 1px;

    font-weight: bold;

    text-transform: uppercase;

    cursor: pointer;

    -webkit-transition: all 150ms ease;

    transition: all 150ms ease;

  }

  

  .btn.generate:active {

    -webkit-transform: translateY(-3%);

            transform: translateY(-3%);

    -webkit-box-shadow: 0 4px 8px rgba(255, 255, 255, 0.08);

            box-shadow: 0 4px 8px rgba(255, 255, 255, 0.08);

  }

 

JavaScript 

 // 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);

}

// 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()

})

})

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