Angular Interview Practice

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What is the main syntax difference between traditional functions and fat-arrow functions?

Fat-arrow functions use the function keyword.
Fat-arrow functions do not use parentheses.
Fat-arrow functions use => instead of the function keyword.
Fat-arrow functions are only declared with const.

The correct answer is: Fat-arrow functions use => instead of the function keyword.

The main syntax difference between traditional functions and fat-arrow functions lies in the use of the greater-than sign and equal sign (=>) as part of the fat-arrow function's declaration. This syntax allows developers to create functions more concisely without the need to use the `function` keyword, which is required in traditional function declarations. For example, a traditional function could be defined as follows: ```javascript function add(a, b) { return a + b; } ``` In contrast, a fat-arrow function for the same purpose can be expressed succinctly like this: ```javascript const add = (a, b) => a + b; ``` The use of the fat-arrow syntax simplifies the function declaration and enhances readability, especially for inline functions or callbacks. While the other options touch upon aspects of function syntax, they do not capture this fundamental difference: the unique use of the fat-arrow notation (=>) is what distinguishes it from traditional function declarations.