[英]is there a better way to write return statement in javascript
I'm creating a sign up page using prompt(), i want to return from the page when a user cancels.我正在使用 prompt() 创建一个注册页面,我想在用户取消时从该页面返回。 i tried using return statement to achieve this but it gave an error _ illegal return statement .
我尝试使用 return 语句来实现这一点,但它给出了一个错误 _非法 return 语句。 I wrote the same code without a constructor or the idea of OOP and I really want to get same result using constructor or the idea of OOP if possible here is my code
我在没有构造函数或 OOP 的想法的情况下编写了相同的代码,如果可能的话,我真的想使用构造函数或 OOP 的想法获得相同的结果这是我的代码
let getuserName = prompt("enter your user Name")
while (validateUserName(getuserName) == false) {
getuserName = prompt("invalide user, user name most be less than 10")
}
if (getuserName == null) {
return
}* //this is showing illegal return*
let getpassword = prompt("enetr your password")
while (validatePassword(getpassword) == false) {
getpassword = prompt("password most be 10 0r more")
}
//confirm password
let getconfirmPassword = prompt("please confirm your password")
while (getconfirmPassword !== getpassword) {
getconfirmPassword = prompt("invalid password, please enter a valid password")
}
class user {
constructor(userName, firstName, lastName, email, accountValidated, password, confirmPassword) {
this.userName = userName || "Anonymous";
this.firstName = firstName || "Anonymous";
this.lastName = lastName || "N/A";
this.email = email || " "
this.accountValidated = accountValidated || null;
this.password = password || null;
this.confirmPassword = confirmPassword || null;
}
getuserName() {
return this.userName;
}
getfullName() {
return `${this.firstName} ${this.lastName}`;
}
getemail() {
return this.email;
}
getvalidation() {
return this.accountValidated;
}
getpassword() {
return this.password;
}
getconfirmPassword() {
return this.confirmPassword
}
}
const user1 = new user(`${getuserName}`, "josephine", "nnalue", "josephinennalue@gmail.com", true, "josephine123")
const user2 = new user("Amara123", "Amarachi", "Simon", "amarachisimon@gmail.com", true, "amarachi123123")
const user3 = new user("chi123", "Chika", "Okoye", "chikaokoye@gmail.com", false, "chika123")
const user4 = new user("ble123", "Blessing", "Jimmy", "blessingjimmy@gmail.com", true, "blessing123")
const user5 = new user("seunbaby", "Seun", "Kareem", "seunkareem@gmail.com", false, "seun123")
console.log(user1.getuserName())
//validating user name
function validateUserName() {
if (getuserName == null) {
return true
}
if (getuserName.length > 10) {
return false
} else {
return true
}
}
console.log(validateUserName())
//validating password
function validatePassword() {
if (getpassword.length < 10) {
return false
} else {
return true
}
}
console.log(validatePassword())
I've made some adjustments to your code to make it work and also simplified some of it.我对您的代码进行了一些调整以使其正常工作并简化了其中的一些。 I've tried to reuse your code and logic as much as possible.
我试图尽可能地重用你的代码和逻辑。
function showPrompt() { function validateUserName(userName) { return userName.length < 10; } function validatePassword(password) { return password.length > 10; } let getuserName = prompt("enter your user Name") while (!validateUserName(getuserName)) { getuserName = prompt("invalide user, user name most be less than 10") } let getpassword = prompt("enter your password") while (!validatePassword(getpassword)) { getpassword = prompt("password most be 10 or more") } let getconfirmPassword = prompt("please confirm your password") while (getconfirmPassword !== getpassword) { getconfirmPassword = prompt("invalid password, please enter a valid password") } return { username: getuserName, password: getpassword } } const inputs = showPrompt(); class user { constructor(userName, firstName, lastName, email, accountValidated, password, confirmPassword) { this.userName = userName || "Anonymous"; this.firstName = firstName || "Anonymous"; this.lastName = lastName || "N/A"; this.email = email || " " this.accountValidated = accountValidated || null; this.password = password || null; this.confirmPassword = confirmPassword || null; } getuserName() { return this.userName; } getfullName() { return `${this.firstName} ${this.lastName}`; } getemail() { return this.email; } getvalidation() { return this.accountValidated; } getpassword() { return this.password; } getconfirmPassword() { return this.confirmPassword } } const user1 = new user(`${inputs.username}`, "josephine", "nnalue", "josephinennalue@gmail.com", true, "josephine123") const user2 = new user("Amara123", "Amarachi", "Simon", "amarachisimon@gmail.com", true, "amarachi123123") const user3 = new user("chi123", "Chika", "Okoye", "chikaokoye@gmail.com", false, "chika123") const user4 = new user("ble123", "Blessing", "Jimmy", "blessingjimmy@gmail.com", true, "blessing123") const user5 = new user("seunbaby", "Seun", "Kareem", "seunkareem@gmail.com", false, "seun123") console.log(user1)
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