A function is a set of instructions that takes in input values and performs a specific task or calculation, returning an output value. It is a fundamental concept in mathematics and computer science.
A function is defined using the keyword "function" followed by a name, a set of parentheses for parameters, and curly braces for the function body. For example:
function add(x, y) {
return x + y;
}
A function declaration is a statement that defines a function and can be called anywhere in the code. A function expression is a function that is assigned to a variable or passed as an argument to another function, and can only be called after it has been defined.
Parameters are variables listed in a function's parentheses that represent the values that will be passed into the function when it is called. Arguments are the actual values that are passed into the function when it is called.
Yes, a function can have multiple return statements. However, once a return statement is executed, the function will stop running and return the value specified. This means that any code after the return statement will not be executed.