Question

Design an HTML page that contains a text box to enter the marks in a given subject.

(a) Write HTML code for this web page 

(b) Provide validations for this text box in a separate JavaScript file and link it with the HTML file. 

The validations are 

• it should not be empty 
• it should be a number 
• it should be between 0 and 60. 

(c) List the advantages of writing the script in a separate file.

Answer 1

(b) Step 1. Take a Notepad and type the following and save it as check.js.

function checkData()

{

Step 2. Take another Notepad and type the following and save it as valid.html and execute valid.html file.

(c) We can write scripts in a file and save it as a separate file with the extension .js. The advantage is that this file can be used across multiple HTML files and can be enhance the speed of page loading