Points to Remember: Introduction to JavaScript

Points to Remember:

•                  The <script> tag alerts the browser program to start interpreting all the text between these tags as a script

•                  JavaScript is a case sensitive language

•                  The scope of a variable is the life time of a variable of source code in which it is defined

•                  A literal is a fixed value given to a variable in source code.

•                  An expression is a code fragment that can be evaluated to some data type the language supports.

•                  Java Script supports all basic arithmetic operators like +, - , *, / & %

•                  Java scripts has an in built feature of concatenating strings.

•                  The types of operator is used to get the data type of a variable.

•                  JavaScript supports important types of dialog boxes also called as pop up boxes, alert box, confirm dialog box and prompt dialog box.

•                  ?: is the conditional operator in Java Script also called as ternary operator.