Page 146 - Computer Genius Class 08
P. 146
<TITLE> My First JavaScript </TITLE>
<SCRIPT TYPE="text/javascript" SRC="external.js">
</SCRIPT>
</HEAD>
<BODY>
This message box is displayed using external JavaScript.
</BODY>
</HTML>
Step 4 Save the file with .html extension and open the web page in web browser. You will get the
same output as the previous web page.
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.
JavaScript statements consist of keywords, variables, operators, expressions and comments. Let
us learn about them in detail.
Keywords
A keyword is a reserved word that has a special meaning for the JavaScript interpreter. Some of the
keywords of JavaScript are:
var, switch, let, for, const, function, if, return, etc.
144 Computer Genius-VIII

