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document.write("<br>"+Math.floor(5.2))
                   document.write("<br>"+Math.floor(-5.2))

                   document.write("<br>"+Math.trunc(8.2))
                   document.write("<br>"+Math.trunc(-8.2))
                   </SCRIPT>
                   </BODY>
                   </HTML>
                 Output of the above code is as follows:




















                                                 Lab Assignment ‘n Activity                      #Interdisciplinary




                   Check the output of the following code. Explain the output.
                   <html>
                   <body>
                       <h1>Studying JavaScript</h1>
                       <script>
                   document.write("Math.floor(-5.7): " + Math.floor(-5.7))
                   document.write("<br> Math.ceil(3.4): " + Math.ceil(3.4))
                   document.write("<br>"+isNaN("Three hundred"))
                   </script>
                   </body>
                   </html>



                   4.18 STRING OPERATIONS
                 You already know that concatenation is performed by placing a + sign between two strings. You can also use various
                 string methods in JavaScript to work with strings:

                    Method/                     Description                                    Example
                    Property
                 length        Returns the string’s length.                  document.write(“Constantinople”.length)
                                                                             Output: 14
                 substring     It extracts the substring using the starting and ending  str1 = “Pineapple is very tasty!”;
                               positions as parameters. If you leave the ending position   document.write(str1.substring(7,20))
                               blank, the string will be extracted from beginning  to   Output: le is very ta
                               end.

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