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// This is a simple Password Generator App that will generate random password maybe you can you them to secure your account. |
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// I tried my best to make the code as simple as possible please dont mind the variable names. |
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// Also this idea came in my mind after checking Traversy Media's latest video. |
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// Clear the concole on every refresh |
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console.clear(); |
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// set the body to full height |
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// document.body.style.height = `${innerHeight}px` |
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// Range Slider Properties. |
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// Fill : The trailing color that you see when you drag the slider. |
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// background : Default Range Slider Background |
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const sliderProps = { |
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fill: "#0B1EDF", |
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background: "rgba(255, 255, 255, 0.214)", |
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}; |
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// Selecting the Range Slider container which will effect the LENGTH property of the password. |
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const slider = document.querySelector(".range__slider"); |
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// Text which will show the value of the range slider. |
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const sliderValue = document.querySelector(".length__title"); |
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// Using Event Listener to apply the fill and also change the value of the text. |
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slider.querySelector("input").addEventListener("input", event => { |
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sliderValue.setAttribute("data-length", event.target.value); |
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applyFill(event.target); |
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}); |
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// Selecting the range input and passing it in the applyFill func. |
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applyFill(slider.querySelector("input")); |
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// This function is responsible to create the trailing color and setting the fill. |
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function applyFill(slider) { |
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const percentage = (100 * (slider.value - slider.min)) / (slider.max - slider.min); |
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const bg = `linear-gradient(90deg, ${sliderProps.fill} ${percentage}%, ${sliderProps.background} ${percentage + |
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0.1}%)`; |
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slider.style.background = bg; |
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sliderValue.setAttribute("data-length", slider.value); |
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} |
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// Object of all the function names that we will use to create random letters of password |
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const randomFunc = { |
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lower: getRandomLower, |
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upper: getRandomUpper, |
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number: getRandomNumber, |
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symbol: getRandomSymbol, |
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}; |
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// Random more secure value |
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function secureMathRandom() { |
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return window.crypto.getRandomValues(new Uint32Array(1))[0] / (Math.pow(2, 32) - 1); |
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} |
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// Generator Functions |
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// All the functions that are responsible to return a random value taht we will use to create password. |
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function getRandomLower() { |
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return String.fromCharCode(Math.floor(Math.random() * 26) + 97); |
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} |
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function getRandomUpper() { |
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return String.fromCharCode(Math.floor(Math.random() * 26) + 65); |
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} |
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function getRandomNumber() { |
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return String.fromCharCode(Math.floor(secureMathRandom() * 10) + 48); |
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} |
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function getRandomSymbol() { |
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const symbols = '~!@#$%^&*()_+{}":?><;.,'; |
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return symbols[Math.floor(Math.random() * symbols.length)]; |
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} |
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// Selecting all the DOM Elements that are necessary --> |
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// The Viewbox where the result will be shown |
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const resultEl = document.getElementById("result"); |
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// The input slider, will use to change the length of the password |
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const lengthEl = document.getElementById("slider"); |
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// Checkboxes representing the options that is responsible to create differnt type of password based on user |
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const uppercaseEl = document.getElementById("uppercase"); |
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const lowercaseEl = document.getElementById("lowercase"); |
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const numberEl = document.getElementById("number"); |
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const symbolEl = document.getElementById("symbol"); |
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// Button to generate the password |
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const generateBtn = document.getElementById("generate"); |
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// Button to copy the text |
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const copyBtn = document.getElementById("copy-btn"); |
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// Result viewbox container |
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const resultContainer = document.querySelector(".result"); |
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// Text info showed after generate button is clicked |
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const copyInfo = document.querySelector(".result__info.right"); |
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// Text appear after copy button is clicked |
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const copiedInfo = document.querySelector(".result__info.left"); |
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// if this variable is trye only then the copyBtn will appear, i.e. when the user first click generate the copyBth will interact. |
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let generatedPassword = false; |
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// Update Css Props of the COPY button |
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// Getting the bounds of the result viewbox container |
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let resultContainerBound = { |
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left: resultContainer.getBoundingClientRect().left, |
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top: resultContainer.getBoundingClientRect().top, |
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}; |
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// This will update the position of the copy button based on mouse Position |
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resultContainer.addEventListener("mousemove", e => { |
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resultContainerBound = { |
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left: resultContainer.getBoundingClientRect().left, |
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top: resultContainer.getBoundingClientRect().top, |
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}; |
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if(generatedPassword){ |
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copyBtn.style.opacity = '1'; |
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copyBtn.style.pointerEvents = 'all'; |
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copyBtn.style.setProperty("--x", `${e.x - resultContainerBound.left}px`); |
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copyBtn.style.setProperty("--y", `${e.y - resultContainerBound.top}px`); |
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}else{ |
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copyBtn.style.opacity = '0'; |
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copyBtn.style.pointerEvents = 'none'; |
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} |
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}); |
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window.addEventListener("resize", e => { |
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resultContainerBound = { |
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left: resultContainer.getBoundingClientRect().left, |
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top: resultContainer.getBoundingClientRect().top, |
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}; |
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}); |
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// Copy Password in clipboard |
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copyBtn.addEventListener("click", () => { |
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const textarea = document.createElement("textarea"); |
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const password = resultEl.innerText; |
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if (!password || password == "CLICK GENERATE") { |
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return; |
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} |
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textarea.value = password; |
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document.body.appendChild(textarea); |
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textarea.select(); |
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document.execCommand("copy"); |
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textarea.remove(); |
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copyInfo.style.transform = "translateY(200%)"; |
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copyInfo.style.opacity = "0"; |
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copiedInfo.style.transform = "translateY(0%)"; |
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copiedInfo.style.opacity = "0.75"; |
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}); |
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// When Generate is clicked Password id generated. |
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generateBtn.addEventListener("click", () => { |
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const length = +lengthEl.value; |
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const hasLower = lowercaseEl.checked; |
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const hasUpper = uppercaseEl.checked; |
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const hasNumber = numberEl.checked; |
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const hasSymbol = symbolEl.checked; |
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generatedPassword = true; |
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resultEl.innerText = generatePassword(length, hasLower, hasUpper, hasNumber, hasSymbol); |
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copyInfo.style.transform = "translateY(0%)"; |
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copyInfo.style.opacity = "0.75"; |
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copiedInfo.style.transform = "translateY(200%)"; |
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copiedInfo.style.opacity = "0"; |
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}); |
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// Function responsible to generate password and then returning it. |
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function generatePassword(length, lower, upper, number, symbol) { |
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let generatedPassword = ""; |
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const typesCount = lower + upper + number + symbol; |
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const typesArr = [{ lower }, { upper }, { number }, { symbol }].filter(item => Object.values(item)[0]); |
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if (typesCount === 0) { |
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return ""; |
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} |
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for (let i = 0; i < length; i++) { |
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typesArr.forEach(type => { |
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const funcName = Object.keys(type)[0]; |
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generatedPassword += randomFunc[funcName](); |
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}); |
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} |
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return generatedPassword.slice(0, length); |
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} |
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// function that handles the checkboxes state, so at least one needs to be selected. The last checkbox will be disabled. |
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function disableOnlyCheckbox(){ |
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let totalChecked = [uppercaseEl, lowercaseEl, numberEl, symbolEl].filter(el => el.checked) |
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totalChecked.forEach(el => { |
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if(totalChecked.length == 1){ |
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el.disabled = true; |
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}else{ |
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el.disabled = false; |
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} |
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}) |
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} |
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[uppercaseEl, lowercaseEl, numberEl, symbolEl].forEach(el => { |
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el.addEventListener('click', () => { |
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disableOnlyCheckbox() |
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}) |
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}) |