User-Defined Functions part 1

JavaScript Functions



A JavaScript function is a block of code designed to perform a particular task.
The main advantages of using functions:
Code reuse: Define the code once, and use it many times.
Use the same code many times with different arguments, to produce different results.
A JavaScript function is executed when "something" invokes, or calls, it.
What is a function?

Profession
Arithmetical term
A certain block of code that can be reused over and over again

Comments

Post a Comment

Popular posts from this blog

Introducing object part 3

Object Methods An  object   method   is a property that contains a  function definition . Use the following syntax to access an  object method . objectName.methodName() As you already know,  document.write() outputs data. The  write()  function is actually a  method  of the  document   object . document.write("This is some text"); Try It Yourself Methods are functions that are stored as  object  properties.
Read more

Comparison Operators part 2

Image
Comparison Operators The table below explains the comparison operators. When using operators, be sure that the arguments are of the same data type; numbers should be compared with numbers, strings with strings, and so on. Please enter the corresponding operators according to the comments at right. val1      == val2 // are equal val1  !      val2 // not equal val1  <val2 // less than val1 ===      val2 // are strict equal (identical)
Read more

Module 2

Please fill in the right keywords to test the conditions: Switch(day_of_week) {   case 1:   case 2:   case 3:   case 4:   case 5:     document.write("Working Days");      Break ;   case 6:     document.write("Saturday");      Break ;   default:     document.write("Today is Sunday");     break; }
Read more