Generator losowego hasła

Gotowy kod: Generator losowego hasła

HTML

<section class="lab"><h2>Generator losowego hasła</h2><label>Długość <input class="pass-length" type="range" min="12" max="40" value="18"></label><output class="pass-output"></output><button class="pass-generate">Wylosuj hasło</button><p>Hasło powstaje w przeglądarce. Nie jest wysyłane na serwer.</p></section>

CSS

*{box-sizing:border-box}body{margin:0;padding:35px 24px;background:#f4f5ef;color:#293322;font:15px/1.7 Arial,sans-serif;min-height:100vh;display:grid;place-items:center}button,input{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #738858;outline-offset:4px}h2,h3,p{margin-top:0}[hidden]{display:none!important}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.lab{max-width:800px;margin:25px auto;padding:25px;border:1px solid #d4dec9;border-radius:14px;background:#fff;color:#273724;font:15px/1.6 system-ui,sans-serif;overflow-wrap:anywhere}.lab *{box-sizing:border-box}.lab h2{font-size:23px;margin:0 0 25px;line-height:1.3}.lab h3{line-height:1.3}.lab label{display:block;margin:10px 0}.lab input:not([type=checkbox]):not([type=radio]),.lab select,.lab textarea{font:inherit;padding:9px;border:1px solid #bac9ad;border-radius:6px;max-width:100%;background:#fff;color:#273724}.lab input[type=range]{width:100%;accent-color:#6f8e58}.lab input[type=color]{height:45px;width:70px}.lab input[type=checkbox]{accent-color:#6f8e58;margin-right:8px}.lab textarea{width:100%}.lab button{font:inherit;font-weight:600;border:0;border-radius:14px;background:#6f8e58;color:#fff;padding:10px 16px;cursor:pointer}.lab button:disabled{opacity:.45;cursor:default}.lab :focus-visible{outline:3px solid #315f8b;outline-offset:3px}.lab pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f0f4e9;padding:15px;font:12px/1.6 monospace}.lab table{border-collapse:collapse;width:100%}.lab th,.lab td{padding:10px;text-align:left;border-bottom:1px solid #d9e3ce}.lab progress{accent-color:#6f8e58}.lab .lab-hint{font-size:11px;color:#687861;border-top:1px solid #dbe3d0;padding-top:16px;margin-top:25px}.lab [hidden]{display:none!important}@media(max-width:480px){.lab{padding:16px;margin:10px auto}.lab h2{font-size:20px}.lab table{font-size:12px}.lab th,.lab td{padding:7px}}@media(prefers-reduced-motion:reduce){.lab *{animation:none!important;transition:none!important}}
.pass-output{display:block;padding:25px;background:#eaf1e2;word-break:break-all;font:18px monospace;margin:15px 0}

JavaScript

const output=document.querySelector('.pass-output');function generate(){if(!globalThis.crypto?.getRandomValues){output.textContent='Ta przeglądarka nie udostępnia bezpiecznego generatora.';return}const alphabet='ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz23456789!@#$%&*+-',length=Number(document.querySelector('.pass-length').value);let result='';while(result.length<length){const bytes=crypto.getRandomValues(new Uint8Array(64));for(const byte of bytes){if(byte>=Math.floor(256/alphabet.length)*alphabet.length)continue;result+=alphabet[byte%alphabet.length];if(result.length===length)break}}output.textContent=result}document.querySelector('.pass-generate').onclick=generate;document.querySelector('.pass-length').oninput=generate;generate();