JavaScript Examples
Basic JavaScript Examples
Write text with JavaScript
Write HTML tags with JavaScript
JavaScript in the body section
JavaScript in the head section
An external JavaScript
Examples explained
JavaScript Statements, Comments and Blocks
JavaScript statements.
JavaScript blocks.
Single line
comments.
Multiple lines comments.
Single line comment to prevent execution.
Multiple lines comment to prevent execution.
Examples explained
JavaScript Variables
Declare a variable, assign a value to it, and display it
Examples explained
JavaScript Conditional If ... Else
If statement
If...else statement
Random link
Switch statement
Examples explained
JavaScript Popup Boxes
Alert box
Alert box with line breaks
Confirm box
Prompt box
Examples explained
JavaScript Functions
Call a function
Function with an argument
Function with an argument 2
Function that returns a value
Function with arguments, that returns a value
Examples explained
JavaScript Loops
For loop
Looping through HTML headers
While loop
Do While loop
Break a loop
Break and continue a loop
Use a for...in statement to loop through the elements of an array
Examples explained
JavaScript Error Handling
The try...catch statement
The try...catch statement with a confirm box
The onerror event
Examples explained
Advanced JavaScript Examples
Detect the visitor's browser and browser version
More details about the visitor's browser
All details about the visitor's browser
Alert user, depending on browser
Create a welcome cookie
Button animation
Image map with added JavaScript
Simple timing
Another simple timing
Timing event in an infinite loop
Timing event in an infinite loop - with a Stop button
A clock created with a timing event
Create a direct instance of an object
Create a template for an object
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