JavaScript : Where to use javaScript code

JavaScript code use in following :

  1. Between the body tag of html
  2. Between the head tag of html
  3. In .js file (external javaScript)

1. JavaScript use between html body tag :

Example of javaScript using inside html between body tag.

Output :- Hello World

2. JavaScript use between head tag in html :

Example to use javaScript between head tag in html.

Output :

3. External JavaScript file :

We can create external JavaScript file and embed it in many html page. If you want to run the same JavaScript on several pages in a web site, you should create an external JavaScript file, instead of writing the same script over and over again.

message.js

index.html

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