The status property of the XMLHttpRequest object holds the HTTP status code of the response received from the server. It indicates whether the request was successful or encountered an error. statusText contains the status message associated with the status code. response contains the response data.

In order to create a private variable in JavaScript, you might utilize a "Module." A module is a design pattern that allows you to encapsulate data and functions, providing a way to create private variables and methods. This helps in achieving data encapsulation and preventing unwanted external access.

The prototype property of a function in JavaScript allows you to add new properties and methods to all instances created by that function. This is useful for implementing inheritance and sharing common behavior among objects created from the same constructor function. It doesn't create new instances or change the function's name or scope.

JavaScript was developed by Netscape. Brendan Eich created it in 10 days in September 1995. While Netscape is best known for its role in the development of JavaScript, it didn't create other popular languages like Java.

The output of the arithmetic expression 7 / 0 in JavaScript is Infinity. In JavaScript, dividing a number by 0 results in positive or negative infinity depending on the sign of the numerator. Attempting to divide by 0 does not throw an error, but it produces infinity.

The Factory pattern is used to create an instance of an object with some default values. It provides an interface for creating objects in a super factory or a factory method. This pattern is commonly used in JavaScript to create objects.

When a function expression is marked as "async," it returns a Promise. An async function can pause its execution and wait for the Promise to resolve or reject, which is helpful for handling asynchronous operations elegantly.

A do-while loop is useful when you want to guarantee that the loop body executes at least "once" before checking the condition. This is because in a do-while loop, the condition is evaluated after the loop body, ensuring that the code inside the loop executes at least once, even if the condition is initially false.

One potential reason for an event not being captured during the capturing phase is that the event is not properly attached to the target element. Capturing phase events need to be registered correctly using methods like addEventListener with the true parameter to enable the capturing phase. Other options may affect event handling but are not specific to the capturing phase.

To prevent XSS attacks, it's recommended to use the textContent property. Unlike innerHTML, which can execute scripts, textContent only sets the text content of an element, making it safer for user-generated input.