Writing Simple Java Script Program

In this article you learn the basics of JavaScript and create your first JavaScript program.

Creating your first JavaScript Program

In the last lesson you learned how to create simple java script program. To run the program open the html file in any browser and click on the "Run Java Script First Program". The will display the message box. Here is the screen shot of the browser.

Test JavaScript program from here.

Here is the code of JavaScript program:

Following is the JavaScript program that will show the message:

<script language="JavaScript">
function sayhello(){
alert("Welcome to JavaScript World!");
}
</script>

The alert() function of the java script displays message.