An else statement in programming is used when setting up a conditional statement using an if statement. The else statement is used in conjunction with the if statement when you want to execute a block of code when the if statement is false. Here's an example in JavaScript:

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let age = 18;
if (age >= 21) {
  console.log("You can drink alcohol.");
} else {
  console.log("You cannot drink alcohol.");
}

In the above example, the if statement checks if the variable age is greater than or equal to 21. If it is true, the first block of code will run (console.log("You can drink alcohol.");). However, if it is false, the code block after the else statement will run (console.log("You cannot drink alcohol.");).

This is a JavaScript code. The code is prompting the user to input a country, and then using an if/else statement to check whether the user input matches any of the listed variations of Brazil or Portugal. If there is a match, an alert message will be displayed indicating that the user speaks Portuguese. If there is no match, a different alert message will be displayed indicating that the user does not speak Portuguese.

An if-else statement is a conditional statement in programming that executes different code depending on whether a specified condition is true or false. It is commonly used to control the flow of a program. Here is an example in JavaScript:

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let num = 5;

if (num > 10) {
  console.log("The number is greater than 10.");
} else {
  console.log("The number is less than or equal to 10.");
}

This code will output "The number is less than or equal to 10." because the condition in the if statement is not true, so the code in the else statement will be executed instead.

You can use a conditional statement with a logical operator to check if the variable value is within the desired range.

Here's an example in JavaScript to check if a variable x is between 0 and 10:

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if (x >= 0 && x <= 10) {
  // code to execute if x is between 0 and 10
} else {
  // code to execute if x is outside the range of 0 and 10
}

In this example, the && operator is used to check if x is greater than or equal to 0 AND less than or equal to 10. If the condition is true, the code inside the first block will execute. If the condition is false, the code inside the second block will execute.

You can adjust the numbers to fit your specific needs.

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
}

Imperative programming is a type of programming that focuses on specifying how a program should perform an action by giving step-by-step instructions. A simple example of imperative programming in JavaScript is creating a loop:

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for (let i = 0; i < 10; i++) {
  console.log(i);
}

This code loop tells JavaScript to start at 0, run the code inside the loop with the value of i starting at 0, until it reaches the condition where i is no longer less than 10, and increase the value of i by 1 after each iteration. The loop will output the numbers 0-9 to the console.