Learn with us how to create an amazing Password Generator in HTML, CSS, and Javascript!
If you found us on TikTok on the following post, check out this article and copy-paste the full code!
Happy coding! 😻
Contents:
1. HTML Code
2. CSS Code
3. Javascript Code
Get your code ⬇️
1. HTML Code
<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> <div class="support"> <a href="https://twitter.com/DevLoop01" target="_blank"><i class="fab fa-twitter-square"></i></a> <a href="https://codepen.io/dev_loop/" target="_blank"><i class="fab fa-codepen"></i></a>
</div> <a class="github-corner" href="https://github.com/devloop01/password-generator" title="Fork me on GitHub" target="_blank"> <svg width="80" height="80" viewbox="0 0 250 250"> <title>Fork me on GitHub</title> <path d="M0 0h250v250" /> <path class="octo-arm" d="M127.4 110c-14.6-9.2-9.4-19.5-9.4-19.5 3-7 1.5-11 1.5-11-1-6.2 3-2 3-2 4 4.7 2 11 2 11-2.2 10.4 5 14.8 9 16.2" fill="currentColor" style="transform-origin:130px 110px;" /> <path class="octo-body" d="M113.2 114.3s3.6 1.6 4.7.6l15-13.7c3-2.4 6-3 8.2-2.7-8-11.2-14-25 3-41 4.7-4.4 10.6-6.4 16.2-6.4.6-1.6 3.6-7.3 11.8-10.7 0 0 4.5 2.7 6.8 16.5 4.3 2.7 8.3 6 12 9.8 3.3 3.5 6.7 8 8.6 12.3 14 3 16.8 8 16.8 8-3.4 8-9.4 11-11.4 11 0 5.8-2.3 11-7.5 15.5-16.4 16-30 9-40 .2 0 3-1 7-5.2 11l-13.3 11c-1 1 .5 5.3.8 5z" fill="currentColor" /> </svg>
</a>
2. CSS Code
* { 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: $field-border-radius; color: #fff; border: none; background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%); letter-spacing: 1px; font-weight: bold; text-transform: uppercase; cursor: pointer; transition: all 150ms ease; &:active { transform: translateY(-3%); box-shadow: 0 4px 8px rgba(255, 255, 255, 0.08); }
} .support{ position: fixed; right: 10px; bottom: 10px; padding: 10px; display: flex;
}
a{ margin: 0 20px; color: #fff; font-size: 2rem; transition: all 400ms ease;
} a:hover{ color: #222;
} .github-corner svg{ position:absolute; right:0; top:0; mix-blend-mode:darken; color:#eeeeee; fill:#353535; clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.github-corner:hover .octo-arm{ animation:octocat-wave .56s;
}
@keyframes octocat-wave{ 0%, 100%{ transform:rotate(0); } 20%, 60%{ transform:rotate(-20deg); } 40%, 80%{ transform:rotate(10deg); }
}
3. Javascript Code
// This is a simple Password Generator App that will generate random password maybe you can you them to secure your account.
// I tried my best to make the code as simple as possible please dont mind the variable names.
// Also this idea came in my mind after checking Traversy Media's latest video. // Clear the concole on every refresh
console.clear();
// set the body to full height
// document.body.style.height = `${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() })
})
I hope you did find this tutorial useful!
For more web development or UI/UX design tutorials, follow us on:
- TikTok
- Blog
Other useful resources:
- Free Resources (UI Kits, Admin, and Mobile Templates)
- UI/UX Design Book
- Tailwind CSS UI/UX Design Course – Code Included
- The Ultimate UI/UX Design Course
