Javascript Functions

important terms

1.function-Subprogram called to perform a particular task.
2.Variable- identifier used to represent a single data item.
3.Parameter-Variable used to store values ,within a function.
4.Arguments-Actual values stored within a function.

3 Ways of Declaring Function

a)1.traditional way

function calAge(cyear,yob){
return cyear-yob;
}
console.log(calAge(2021,2000))

b)embedding it in a variable

const age=function calAge(cyear,yob){
return cyear-yob;
}
console.log(age(2021,2000)

c)Using Arrow

const age = (cyear, yob) => {
return cyear - yob;
}
console.log(age(2021,2000)

note

for all the above the output is 21,

parameters are those inside the function parenthesis while auguments are the 2021,2000 values within the console.log().

try it yourself,happy coding Nerds