首頁猿問使用隨機密碼生成器

使用隨機密碼生成器

JavaScript

斯蒂芬大帝 2023-06-29 21:07:28

我正在嘗試使用以下代碼生成隨機密碼。當我運行它時，我變得未定義。我的“未定義”從何而來？**```// 賦值代碼 var charString = ["ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklnmopqrstuvwxyz", "0123456789", "~!@#$%^&*()-_=+"]; var userInput = []; var password = ""; var generateBtn = document.querySelector("#generate"); // Write password to the #password input function writePassword() { password = generatePassword(); var passwordText = document.querySelector("#password"); passwordText.value = password; } // Character length prompt function generatePassword() { var characterLength = 0 while ((characterLength < 8 || characterLength > 128) || Number.isInteger(characterLength) === false) { characterLength = parseInt(prompt("How many characters would you like your password to be? (8- 128)")); } var upper = false var lower = false var number = false var symbol = false while (!upper && !lower && !number && !symbol) { // Uppercase pop up upper = confirm("Click OK to confirm uppercase characters"); // Lowercase pop up lower = confirm("Click OK to confirm lowercase characters"); // Numeric pop up number = confirm("Click OK to confirm numeric characters"); // Special charcter pop up symbol = confirm("Click OK to confirm special characters (~!@#$%^&*()-_=+)"); } if (upper) { userInput += charString[0]; } if (lower) { userInput += charString[1] } if (number) { userInput += charString[2] } if (symbol) { userInput += charString[3] } var password = ""; for (var i = 1; i <= userInput.length; i++) { var index = (Math.floor(Math.random) * userInput); password = password + userInput[index] } return password}// Add event listener to generate button generateBtn.addEventListener("click", writePassword);```

查看完整描述

3 回答

侃侃爾雅

TA貢獻1801條經驗獲得超16個贊

我修復了你的代碼并在代碼片段中做了一些觀察

// Assignment Code

var charString = ["ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklnmopqrstuvwxyz", "0123456789", "~!@#$%^&*()-_=+"];

var userInput = [];

var password = "";

var generateBtn = document.querySelector("#generate");

// Write password to the #password input

function writePassword() {

password = generatePassword();

var passwordText = document.querySelector("#password");

passwordText.value = password;

}

// Character length prompt

function generatePassword() {

var characterLength = 0

while ((characterLength < 8 || characterLength > 128) || Number.isInteger(characterLength) === false) {

characterLength = parseInt(prompt("How many characters would you like your password to be? (8-128)"));

}

var upper = false

var lower = false

var number = false

var symbol = false

while (!upper && !lower && !number && !symbol) {

// Uppercase pop up

upper = confirm("Click OK to confirm uppercase characters");

// Lowercase pop up

lower = confirm("Click OK to confirm lowercase characters");

// Numeric pop up

number = confirm("Click OK to confirm numeric characters");

// Special charcter pop up

symbol = confirm("Click OK to confirm special characters (~!@#$%^&*()-_=+)");

}

// userInput is an array, so you should push values into it.

if (upper) {

userInput.push(charString[0]);

}

if (lower) {

userInput.push(charString[1])

}

if (number) {

userInput.push(charString[2])

}

if (symbol) {

userInput.push(charString[3])

}

var password = "";

// join all array elements into a single one, and then split in order

// to get an array of characters

userInput = userInput.join("").split("");

// You should start your for statement at position 0, not 1

// and I guess it should be < than characterLength, not userInput.length

for (var i = 0; i < characterLength; i++) {

// Math.random is a function so you were missing the parenthesis Math.random()

// also Math.random() should be times userInput.length

// so they should be inside the same parenthesis

var index = (Math.floor(Math.random() * userInput.length));

password = password + userInput[index]

}

return password

}

// Add event listener to generate button

generateBtn.addEventListener("click", writePassword);

<button id="generate">Generate</button>

<br>

反對回復 2023-06-29

HUH函數

TA貢獻1836條經驗獲得超4個贊

我對您的類型選擇進行了一些更改以避免無限循環。你的問題是你的隨機索引生成。就這樣：

var charString = ["ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklnmopqrstuvwxyz", "0123456789",

"~!@#$%^&*()-_=+"];

var userInput = "";

var password = "";

var generateBtn = document.querySelector("#generate");

// Write password to the #password input

function writePassword() {

var passwordText = document.querySelector("#password");

password = generatePassword();

passwordText.value = ''; // Clear prev value

passwordText.value = password;

}

// Character length prompt

function generatePassword() {

var characterLength = 0

while ((characterLength < 8 || characterLength > 128) || Number.isInteger(characterLength) ===

false) {

characterLength = parseInt(prompt(`How many characters would you like your password to be? (8

128)`));

}

var upper = false

var lower = false

var number = false

var symbol = false

while (true) {

// Uppercase pop up

upper = confirm("Click OK to confirm uppercase characters");

// Lowercase pop up

lower = confirm("Click OK to confirm lowercase characters");

// Numeric pop up

number = confirm("Click OK to confirm numeric characters");

// Special charcter pop up

symbol = confirm("Click OK to confirm special characters (~!@#$%^&*()-_=+)");

break;

}

console.log('Using upper', upper);

console.log('Using lower', lower);

console.log('Using number', number);

console.log('Using symbol', symbol);

upper && (userInput += charString[0])

lower && (userInput += charString[1])

number && (userInput += charString[2])

symbol && (userInput += charString[3])

var password = "";

for (var i = 0; i < characterLength; i++) {

var index = Math.floor(Math.random() * userInput.length);

password += userInput[index]

}

return password

}

// Add event listener to generate button

generateBtn.addEventListener("click", writePassword);

<button id="generate">Generate</button>

反對回復 2023-06-29

手掌心

TA貢獻1942條經驗獲得超3個贊

改變

 var index = (Math.floor(Math.random) * userInput);

到

 var index = (Math.floor(Math.random() * userInput.length));

反對回復 2023-06-29

3 回答
0 關注
206 瀏覽

關注

添加回答

舉報

0/150

提交

取消

亚洲在线久爱草,狠狠天天香蕉网,天天搞日日干久草,伊人亚洲日本欧美

熱搜

最近搜索清空

使用隨機密碼生成器

使用隨機密碼生成器

3 回答

添加回答