In the Fetch API, you should use the JSON.stringify() method to convert a JavaScript object to a string. This method serializes the object into a JSON string, which is a common way to send structured data in HTTP requests and responses. parse() is used for JSON parsing.

The Blob interface provides methods to deal with HTTP responses represented in binary format. It allows you to work with binary data such as images, audio, or other binary content in a more efficient way. This is essential when handling binary data in web applications.

The double equal operator (==) performs type coercion during comparison, which means it converts the operands to the same type before comparing. This can lead to unexpected results when comparing values of different types, potentially causing type coercion issues in your code. You should generally prefer strict equality (===) to avoid type coercion.

The temporal dead zone (TDZ) is a phase during the variable initialization in JavaScript. It occurs between the variable's declaration and its assignment. During this phase, trying to access the variable will result in a ReferenceError. This impacts function expressions as variables declared within them are also subject to the TDZ. If you try to access such a variable before its declaration, it will lead to a runtime error.

The forEach() method is commonly used to iterate through elements of an array in JavaScript. It allows you to execute a provided function once for each array element, making it a straightforward choice for looping through arrays. The other options, such as for...in loop, while loop, and map() method, have different use cases and are not the most common choices for simple array iteration.

In JavaScript, you can use the querySelector() method to select an element within a specific parent element. This method allows you to specify a CSS selector that matches the desired element. For example, parentElement.querySelector('.child') will select the first child element with the class 'child' within parentElement.

You might prefer to use a function expression (a regular function) over an arrow function when you need to explicitly bind the this context, especially in cases where you want to define methods inside objects or use constructors. Function expressions allow you to use the this keyword as expected, while arrow functions inherit this from their lexical enclosing context.

ECMA International is the organization that now oversees the ECMAScript specification, which serves as the basis for JavaScript. ECMAScript is the standardized version of JavaScript that various browsers implement.

When using a do-while loop, the loop will always execute at least '1' time. This is because the loop condition is checked after the loop body has executed, so it will execute at least once before checking the condition for subsequent iterations.

When defining a method in an object, the function associated with a property is referred to as a function. Methods are functions that are properties of objects. They allow you to perform actions or calculations using the data and context within the object. Understanding methods is fundamental in object-oriented programming with JavaScript.