JavaScript Examples

Examples of basic JavaScript

• Output text in JavaScript
• Change HTML elements with JavaScript
• An external JavaScript


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JavaScript statements, comments and code blocks

• JavaScript Statements
• JavaScript code blocks
• JavaScript single-line comment
• JavaScript multi-line comments
• Use single line comment to prevent execution
• Using multi-line comment to prevent execution


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JavaScript Variables

• Declare a variable, it is assigned, and then displayed


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JavaScript conditional statement If ... Else

• If statements
• If ... else statement
• Random Links
• Switch statement


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JavaScript message box

• Alert (warning) box
• With a warning box wrap
• Confirmation box
• Balloon


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JavaScript function

• function
• Function with parameters
• Function with parameters 2
• Function return value
• Function with parameters and return values


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JavaScript cycle

• For loop
• Cycle of the output HTML title
• While loop
• Do while loop
• break statement
• continue Statement
• Use For ... In a statement to traverse an array element within


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JavaScript Events

• onclick event
• onmouseover event


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JavaScript Error Handling

• try ... catch statement
• Try with a confirmation box ... catch statement
• onerror event


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Advanced JavaScript Examples

• Create a welcome cookie
• Simple timing
• Another simple timing
• In an infinite loop timed events
• An endless loop with the Stop button in the timed events
• Use timed event made watches
• Create an instance of an object
• Create a template for an object