Skip to content
  • Quizes
  • QStack
  • Blog
  • pinterest
  • instagram
  • twitter
  • linkedin
  • facebook
W3 Coding Schools
  • Home
  • HTML
    • HTML Introduction
    • HTML Editors
    • Fundamentals of HTML
    • Elements of HTML
    • HTML Attributes
    • HTML Headings
    • HTML Paragraphs
    • HTML Style Attribute
    • HTML Text Formatting
    • HTML Phrase Tags
    • HTML Comments
    • HTML with CSS
    • HTML Links
    • HTML Images
    • HTML Tables
    • HTML Lists
    • HTML Blocks
    • HTML Class Attribute
    • HTML Id Attribute
    • HTML Iframes
    • HTML JavaScript
    • HTML File Paths
    • HTML Head
    • Computer Code Elements
    • HTML Entities
    • HTML Charset
    • HTML URL Encode
    • HTML and XHTML
    • HTML Layouts
    • HTML Forms
    • HTML Form Elements
    • HTML Form Input Types
    • HTML Input Attributes
    • HTML5 Introduction
    • HTML5 New Elements
    • Semantic Elements
    • HTML5 Migration
    • Style Guide
    • HTML Canvas
  • CSS
    • CSS Introduction
    • CSS Syntax and CSS Comments
    • CSS Selectors
    • How to add CSS to a Webpage
    • CSS Color Basics
    • CSS Background Properties
    • CSS Border Properties
    • CSS Margin and Padding Properties
    • CSS Height and Width properties
    • CSS Box Model
    • CSS Outline Properties
    • CSS Fonts
    • CSS Text
    • How To Add Icons
    • CSS Links
    • CSS List-Style
    • CSS Tables
    • CSS Display Property
    • CSS Position Property
    • CSS Overflow Property
    • CSS max-width Property
    • CSS Float and Clear Properties
    • CSS Alignment
    • CSS inline-block
    • CSS Combinators
    • CSS Pseudo Classes
    • CSS Pseudo Elements
    • CSS Opacity
    • CSS Navigation Bar
    • CSS Dropdowns
    • CSS Image Gallery
    • CSS Image Sprites
    • CSS Attribute Selector
    • CSS Styling Forms
    • CSS Counters
    • CSS Units
    • CSS Specificity
    • CSS Website Layout
    • CSS Rounded Corners
    • CSS Border Image Property
    • CSS Multiple Backgrounds
    • CSS Gradient
    • CSS Shadow Effects
    • CSS Text Effects
    • CSS Web Fonts
    • CSS 2D Transforms
  • Bootstrap 4
    • Bootstrap 4 – Introduction
    • Bootstrap versions
    • Bootstrap 4 Layout
    • Bootstrap 3 Vs Bootstrap 4
    • Bootstrap 4 Grid System
    • Bootstrap 4 Typography
    • Bootstrap 4 Colors
    • Bootstrap 4 Images
    • Bootstrap 4 Tables
    • Bootstrap 4 Jumbotron
    • Bootstrap 4 Figures
    • Bootstrap 4 Alerts
    • Bootstrap 4 Buttons
    • Bootstrap 4 Button Group
    • Bootstrap 4 Badges
    • Bootstrap 4 Spinners
    • Bootstrap 4 Progress Bars
    • Bootstrap 4 Pagination
    • Bootstrap 4 Breadcrumbs
    • Bootstrap 4 List Groups
    • Bootstrap 4 Cards
  • jQuery
    • jQuery Introduction
    • jQuery Download
    • jQuery Selectors
    • jQuery Event Methods
    • jQuery Hide/Show Effects
    • jQuery Fading Effects
    • jQuery Sliding Effects
    • jQuery Animation
    • jQuery Stop and Callback
    • jQuery Get and Set Methods
    • jQuery Chaining
    • jQuery Add
    • jQuery Remove
    • jQuery CSS Classes
    • jQuery Style Properties
    • jQuery Dimensions
    • jQuery Traversing
    • jQuery Ancestors
    • jQuery Descendants
    • jQuery Siblings
  • Javascript
    • JS Introduction
    • JS Where to Put
    • JavaScript Syntax
    • JavaScript Comments
    • JavaScript Variables
    • JavaScript Data Types
    • JavaScript Operators
    • JavaScript Events
    • JavaScript Strings
    • JavaScript Numbers
  • php
    • PHP Introduction
    • Install PHP
    • PHP Syntax and Comments
    • PHP Variables
    • PHP Constants
    • PHP Echo and Print
    • PHP Data Types
    • PHP Strings
    • PHP Operators
    • PHP $ and $$ Variables
  • WordPress
    • WordPress Introduction
    • WordPress History
    • WordPress.com vs WordPress.org
    • How to Install WordPress
    • WordPress Dashboard
    • How to Create a WordPress Website
    • WordPress Posts
    • WordPress Pages
    • WordPress Posts vs Pages
    • WordPress Categories
  • SEO
    • SEO Introduction
    • SEO Tactics and Methods
    • SEO Relevant Filenames
    • SEO Domain Name
    • Website Design and SEO
    • SEO Keywords
    • Meta Tags Optimization
    • Title Tag Optimization
    • Anchor Text Optimization
    • Content Optimization
  • Android
    • Android Introduction
    • Android History and Versions
    • Android Architecture
    • Android Environment Setup
    • Android Application Components
    • Hello World Application
    • Android Activities
  • iOS
    • iOS Introduction
    • iOS Environment Setup
    • iOS Architecture

You Are Here

  • Home
  • Learn Javascript
  • JS Where to Put

Topics

  • JavaScript Numbers
  • JavaScript Strings
  • JavaScript Events
  • JavaScript Operators
  • JavaScript Data Types
  • JavaScript Variables
  • JavaScript Comments
  • JavaScript Syntax
  • JS Where to Put
  • JS Introduction

Oct Champs & Prizes

  • 1. Pooja Ladda
  • 2. Manjali Kuldharan
  • 3. Pranali Surawar
  • 4. Anjali Kulkarni
  • 5. Vishal Deshmukh

Recent Posts

  • HTML Media
  • jQuery Siblings
  • Bootstrap 4 Cards
  • jQuery Descendants
  • jQuery Ancestors

JS Where to Put

The HTML script element allows us to write JavaScript between opening <script>tag and closing </script> tag.
You can put JavaScript in the head or body section also you can write an external JS file and link it to the HTML document.

The <script> Tag:

In HTML, JS code must be embedded between <script> and </script> tags. The <script> tag is used to identify a block of script code in the HTML page. It also loads a script file with the src attribute.

Syntax:

<script>
//write JavaScript code here..
</script>
Let see where and how we can write JS code.

JavaScript in <head> or <body>:

There is a flexibility to include JS code anywhere in an HTML document.
You can add any number of scripts in an HTML document and these scripts can be put in <head>or in the <body> section of an HTML page.

JavaScript in <head>:

In the following example, a JS function is placed in the <head> section of an HTML page and this function is called when a button is clicked.

Example:

<!DOCTYPE html>
<html>
<head>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "JavaScript is a client-side scripting language and it is used to enhance the interaction of the user with the webpage.";
}
</script>
</head>
<body>
<p id="demo"> JavaScript </p>
<button type="button" onclick="myFunction()"> Click on it </button>
</body>
</html>
Try it

JavaScript in <body>:

In the following example, a JS function is placed in the <body> section of an HTML page and this function is called when a button is clicked.

Example:

<!DOCTYPE html>
<html>
<body>
<p id="demo"> JavaScript </p>
<button type="button" onclick="myFunction()"> Click on it </button>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "JavaScript is a client-side scripting language and it is used to enhance the interaction of the user with the webpage.";
}
</script>
</body>
</html>
Try it

External JavaScript:

You can write JS code in an external file with .js extension and linked it to the HTML document. The benefit of the external JS is that you can link it to multiple HTML documents and when you make changes in the main JS file it will affect all linked documents so you don’t need to make changes in every JS file.
If you want to use an external script then put the name of the script file in the src attribute of the

Example:

<script src="external_Script.js"></script>
Try it
You can add more than one script files to one page.

Example:

<script src="external_Script1.js"></script>
<script src="external_Script2.js"></script>
Try it

Advantages External JavaScript:

  • Separating HTML and JS code will help manage the code better
  • Designers can work along with coders parallel without conflicts
  • JS code, as well as HTML, is easily readable
  • The external JS files are cached by browsers and can speed up page load times

Post navigation

JS Introduction
JavaScript Syntax

Ask a Question Cancel reply

Your email address will not be published. Required fields are marked *

W3 CODING SCHOOLS © Copyright 2019-20
Privacy policy   Terms of use

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.Ok