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Do You Know?



                                 The writeln() method works within <PRE> tag.





                                               Lab Assignment ‘n Activity                         Subject Enrichment



                 Create a JavaScript program to display the following in different lines:
                 1.  Your name, class, best friend(s)’ names
                 2.  Today’s date and time
                 3.  Your best memory



                 4.9 JAVASCRIPT DATA TYPES

              A data type is a classification of the type of data that can be stored in a variable or object. Variables in JavaScript can
              hold a variety of data types, including numbers, strings, objects, and more.

                                Data Type               Description                     Example
                             String          textual data                      “What is lovely day”, ‘Pizza’

                             Number          an integer or a floating-point number  6, 6.43
                             Boolean         Can have only true or false or 0 or 1 value true, false

                             Undefined       the variable is not initialized   let x;
                             Null            represents no value               let x = null;

                             Object          key-value pairs of collection of data  let employee = { };
              All the above data types except Object are called primitive data types whereas Object is called composite data type.

                 4.10 STATEMENTS IN JAVASCRIPT

              Commands and instructions given to the JavaScript interpreter to take some actions are called statements and a
              collection of statements is called a script or a program. Within almost every browser resides the JavaScript interpreter.
              We use the semicolon to terminate a statement but, if the statements are written in separate lines, then the semicolon
              can be omitted.

                290     Touchpad Web Applications-XI
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