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const resultEl = document.getElementById('result')
const lengthEl = document.getElementById('length')
const uppercaseEl = document.getElementById('uppercase')
const lowercaseEl = document.getElementById('lowercase')
const numbersEl = document.getElementById('numbers')
const symbolsEl = document.getElementById('symbols')
const generateEl = document.getElementById('generate')
const clipboardEl = document.getElementById('clipboard')
const randomFunc = {
lower: getRandomLower,
upper: getRandomUpper,
number: getRandomNumber,
symbol: getRandomSymbol
}
clipboardEl.addEventListener('click', () => {
const textarea = document.createElement('textarea')
const password = resultEl.innerText
if(!password) { return }
textarea.value = password
document.body.appendChild(textarea)
textarea.select()
document.execCommand('copy')
textarea.remove()
alert('Password copied to clipboard!')
})
generateEl.addEventListener('click', () => {
const length = +lengthEl.value
const hasLower = lowercaseEl.checked
const hasUpper = uppercaseEl.checked
const hasNumber = numbersEl.checked
const hasSymbol = symbolsEl.checked
resultEl.innerText = generatePassword(hasLower, hasUpper, hasNumber, hasSymbol, length)
})
function generatePassword(lower, upper, number, symbol, length) {
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 += typesCount) {
typesArr.forEach(type => {
const funcName = Object.keys(type)[0]
generatedPassword += randomFunc[funcName]()
})
}
const finalPassword = generatedPassword.slice(0, length)
return finalPassword
}
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(Math.random() * 10) + 48)
}
function getRandomSymbol() {
const symbols = '!@#$%^&*(){}[]=<>/,.'
return symbols[Math.floor(Math.random() * symbols.length)]
}