function, in a programming environment, is a set of instructions. A programmer builds a function to avoid repeating the same task, or reduce complexity.
A function should be
- written to carry out a specified a tasks
- may or may not include arguments
- contain a body
- may or may not return one or more values.
A general approach to a function is to use the argument part as inputs, feed the body part and finally return an output. The Syntax of a function is the following:
function (arglist) {
#Function body
}