To alert a property of an object inside another object that matches a user's input from a prompt, you can follow these steps using JavaScript:

1. Create an object that contains other objects as properties, where each object has properties you want to access later. For example:

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const users = {
  user1: {
    name: "Alice",
    age: 25
  },
  user2: {
    name: "Bob",
    age: 30
  },
  user3: {
    name: "Charlie",
    age: 20
  }
};

1. Use prompt() method to show a message asking the user for input, and store the input in a variable. For example:

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const userInput = prompt("Enter a name:");

1. Loop through the objects in the main object using a for...in loop. For each object, check if the input matches the name property. If it does, use alert() method to show the value of the age property. For example:

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for (let user in users) {
  if (users[user].name === userInput) {
    alert(`The age of ${userInput} is ${users[user].age}`)
  }
}

This will loop through each object in the users object, and check if the name property matches the user input. If it does, it will use alert() method to show the value of age property for that object.

Note that this will only show one alert for the first match. If there are multiple matches, you may want to modify the code to show all the matching objects.

In JavaScript, you can use a combination of object property access and prompt dialog to retrieve the user's input, and then search for the matching property within an object using a for..in loop or Object.keys() method. Once a match is found, you can use the alert() method to display the property value as an alert message.

Here is an example implementation:

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// Define an example object with nested objects
const myObj = {
  name: 'John',
  age: 30,
  contact: {
    email: 'john@example.com',
    phone: '123-456-7890'
  }
};

// Prompt the user to input a property name
const input = prompt('Please enter a property name:');

// Check for a matching property within the object
for (const key in myObj) {
  if (myObj.hasOwnProperty(key)) {
    // If the property is an object, search within its sub-properties
    if (typeof myObj[key] === 'object') {
      for (const subKey in myObj[key]) {
        if (myObj[key].hasOwnProperty(subKey) && subKey === input) {
          alert(myObj[key][subKey]);
          break; // Exit loop after first match is found
        }
      }
    }
    // Otherwise, check if the property matches the input
    else if (key === input) {
      alert(myObj[key]);
      break; // Exit loop after first match is found
    }
  }
}

This example prompts the user to input a property name, and then searches for a matching property within the myObj object. If a match is found, it alerts the corresponding property value as an alert message. Note that this implementation only searches one level deep for nested objects, but you can modify it to search deeper if needed.

Yes, you can certainly put a prompt inside of a function. When the function is called, the prompt will appear and wait for the user's input. Here's an example in JavaScript:

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function greetUser() {
  let name = prompt("What's your name?");
  alert(`Hello, ${name}!`);
}

greetUser();

In this example, the greetUser() function uses the prompt() function to ask the user for their name, and then uses the alert() function to display a greeting using the user's name. When the function is called at the bottom of the code, the prompt will appear and allow the user to enter their name.

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let userInput = prompt("Enter a word:").toLowerCase();

To make the prompt answer case sensitive, convert it to lowercase or uppercase using .toLowerCase() or .toUpperCase() string methods so that the input is always in the same case format before comparing it to a value. The example above converts the input to lowercase, meaning the program will ignore any uppercase characters entered by the user.

You can achieve this using JavaScript.

First, you'll need to add an event listener to the button that listens for the click event. Then, when the button is clicked, you can display the prompt.

Here's an example implementation:

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// Get the button element
const button = document.querySelector('button');

// Add an event listener to the button that listens for the click event
button.addEventListener('click', function() {
  // Display the prompt when the button is clicked
  const userInput = prompt('Please enter some text:');
  console.log(userInput);
});

In this example, we're getting the button element using document.querySelector, and adding an event listener that listens for the click event. When the button is clicked, the function inside the event listener is executed, which displays a prompt asking the user to enter some text. The text entered by the user is then logged to the console using console.log.

You can try this example out for yourself by creating an HTML file with a button element, adding the JavaScript code to the file, and opening it in a web browser.

Here is an example function that prompts the user with a yes or no question and returns a boolean value depending on their answer:

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// JavaScript function that prompts for a yes or no answer
function askYesNoQuestion(question) {
  let answer = prompt(question + " (yes or no)");
  if (answer.toLowerCase() === "yes") {
    return true;
  } else if (answer.toLowerCase() === "no") {
    return false;
  } else {
    // If the user enters an invalid response, prompt again
    alert("Please enter 'yes' or 'no'");
    return askYesNoQuestion(question);
  }
}

// Example usage
let answer = askYesNoQuestion("Do you like pizza?");
if (answer) {
  alert("Great, me too!");
} else {
  alert("Oh no, I love pizza!");
}

In this function, prompt() is used to ask the user a yes or no question, and the user's response is compared to the strings "yes" and "no" using toLowerCase(). If the user enters an invalid response, the function prompts again by calling itself recursively. Finally, the function returns a boolean value of true or false depending on the user's answer.

To convert Fahrenheit to Celsius in JavaScript, you can use the following formula:

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celsius = (fahrenheit - 32) * 5/9;

Here's an example code snippet that prompts the user for a temperature input in Fahrenheit and converts it to Celsius:

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let fahrenheit = prompt("Enter temperature in Fahrenheit: ");
let celsius = (fahrenheit - 32) * 5/9;
console.log(`The temperature in Celsius is ${celsius.toFixed(2)}`);

In this example, we first prompt the user to enter the temperature in Fahrenheit using the prompt() method. We then use the formula shown above to convert the Fahrenheit value to Celsius and store the result in the celsius variable. The toFixed() method is used to round the result to 2 decimal places before it is printed to the console using console.log().

In JavaScript, you can use the prompt() method to create a prompt for user input. See the example code below for syntax and usage.

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let userInput = prompt('Please enter a value:');

For more info, check out the MDN documentation here: https://developer.mozilla.org/en-US/docs/Web/API/Window/prompt

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const button = document.querySelector("#apply");

button.addEventListener("click", event => {
  const name = prompt("What is your first name?");
  const age = prompt("How old are you?");
  const h1 = document.querySelector("h1");

  if (parseInt(age) >= 18) {
    h1.textContent = `Hi, ${name}! Welcome to SheCodes !`;
  } else {
    h1.textContent = `Sorry, ${name}! You cannot join SheCodes `;
  }
});

If you want to take a string input from the user and confirm if it is 10 characters long, you could use the following JavaScript code:

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const password = prompt('Please enter your password');
if (password.length === 10){
  console.log('Valid! Your password is 10 characters')
} else {
  console.log('Invalid! Your password is not 10 characters')
}

This can be done with JavaScript and can be easily achieved using the toLowerCase() method.

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// Select the variable
let userInput = "Something To Convert";

// Convert variable to lowercase
let userInputLower = userInput.toLowerCase();

// Log the conversion
console.log(userInputLower); // prints "something to convert"

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var country = prompt('What country are you from?');
if (/brazil|portugal/i.test(country)) {
  alert('You speak Portuguese!');
} else {
  alert("You don't speak Portuguese.");
}

In JavaScript, you can use a conditional (if...else) statement and a loop (for) statement to collect information from several prompts and use the responses to present one final alert.

For example:

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var i;
var response;
for (i=1; i<=3; i++) {
  response = prompt("Please enter your response " + i);
  //this will prompt the user 3 separate times
}
if (response == "Yes") {
  alert("Thank you!");
  //if the final response is yes, this will be the final alert
} else {
  alert("Sorry, that's not what we were looking for.");
  //if the final response is no, this will be the final alert
}

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// Ask for the current hour
let currentHour = parseInt(prompt("What is the current hour?"));

// If it’s before 12, alert Good morning 
if (currentHour < 12) {
 alert("Good morning!");
} 
// If it’s after 18, alert Good evening 
else if (currentHour > 18) {
  alert("Good evening!");
} 
// If it's between 12 and 18 alert Good afternoon
else {
  alert("Good afternoon!");
}

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let firstName = prompt("What is your first name?");
let lastName = prompt("What is your last name?");
let hometown = prompt("What is your hometown?");
alert(firstName + " " + lastName + " your hometown is " + hometown);

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let age;
age = prompt("What is your age?");

if (age <= 17) {
  const answer = confirm("Do you study at school?");
   console.log(answer);
}

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// Get user input
let age = prompt("What is your age?");

// Evaluate answer
if (age <= 17) {
  // do if age less than or equal to 17
  confirm("Do you study at school?");

} else if (age > 17 && age < 25) {
  // do if age greater than 17 and less than 25
  confirm("Do you study at university?");

} else if (age >= 25 && age < 60) {
  // do if age greater than or equal 25 and less than 60
  confirm("Do you have a job?");

} else {
  // any other age
  confirm("What are you doing?");
}

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let age = prompt("What is your age?");

confirm(age <= 17 ? "Do you study at school?" : "Thanks for your answer.");

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let city = prompt("Enter a city: ");

fetch(`http://api.openweathermap.org/data/2.5/weather?q=${city}&APPID=YOUR_APP_ID`)
  .then(response => response.json())
  .then(data => {
    alert(`It is currently ${data.main.temp - 273.15}°C (${(data.main.temp - 273.15) * 9/5 + 32}°F) in ${city} with a humidity of ${data.main.humidity}%.`);
  });

This can be done with JavaScript by creating a prompt, storing the value in a variable, and then creating a alert with the variable.

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let result = prompt("What do you want to be alerted");
alert(result);

You can stop a page from changing if a user cancels a prompt using the preventDefault() method. This is usually done in JavaScript using an onbeforeunload event attached to the window object. For example:

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window.onbeforeunload = function() {
  return "You cancelled the prompt";
};

Additionally, if you need to use a prompt to capture a value before a page unloads, you can use the prompt() method, which returns null if the user cancels the prompt. For example:

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var value = prompt('Please enter a value before the page unloads');

if (value !== null) { 
  // do something with the value
}

You could use a switch statement to allow the user to select one of the choices. For example, in JavaScript you would use the following syntax:

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let choice = prompt("Choose an option", "");
switch (choice) {
  case "option1":
    // Do something
    break;
  case "option2":
    // Do something else
    break;
  default:
    // Handle the error
    break;
}

In Javascript, you can make an input in a prompt statement case insensitive by using the toLowerCase() method. For example:

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let input = prompt("Enter something").toLowerCase();

By adding the .toLowerCase() method to the end of the prompt statement, the input is automatically converted to all lowercase, despite the user typing in uppercase or lowercase characters.

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window.onload = function() {
  var applicantName = prompt("Please enter your first name", "");
  if (applicantName !=null && applicantName != "") {
    alert("Welcome, " + applicantName);
  } else {
    alert("Too bad for you");
  }
}

To prompt a question with JavaScript, you can use the prompt() method. prompt() opens a dialog box that prompts the user for input. For example, to prompt the user for their name, you can use the following code:

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var name = prompt("What is your name?");

This code opens a dialog box with the question "What is your name?" and stores the response in a name variable. For more information, please refer to the MDN docs.