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JavaScript KB: Beginners Corner Topic


20 Articles Found in the Beginners Corner Topic 

  KB Article    

Mike Prestwood
1. A 10 Minute JavaScript Quick Start Short 10 minute getting started JavaScript primer.
11 years ago, and updated 6 years ago

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2. Close Browser with JavaScript How do you close a browser in a link?
6 years ago
(1 Comments , last by Anonymous )

FAQ
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Mike Prestwood
3. Hide JavaScript Code How do I protect my javascript code?
6 years ago

FAQ
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Mike Prestwood
4. JavaScript Assignment (=)

JavaScript uses = for it's assignment operator.

6 years ago, and updated 6 years ago

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5. JavaScript Comments (// or /* ... */)

Commenting Code
JavaScript uses "//" for a single line comment and /* */ for a multiple line comment.

6 years ago, and updated 5 years ago

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Mike Prestwood
6. JavaScript Comparison Operators (==, !=)

Common comparison operators:

== equal
!= not equal
< less than
> greater than
<= less than or equal
>= greater than or equal

5 years ago

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Mike Prestwood
7. JavaScript Defined What is JavaScript?
6 years ago

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8. JavaScript Development Tools

Languages Focus: Development Tools

Primary development tool(s) used to develop and debug code.

JavaScript Development Tools

Many developers just use a text editor. There are JavaScript editors available including 1st JavaScript Editor, Antechinus JavaScript Editor Professional, and SplineTech JavaScript Debugger PRO.

6 years ago, and updated 5 years ago

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9. JavaScript End of Statement (; is optional)

In JavaScript, using a semicolon at the end of statements is optional. You might think a semicolon then is just another comment specifier but it is not. The semicolon is an optional end of statement specifier. To put two statements on a single code line, you must use a semicolon. However, the semicolon is optional, but probably confusing, when you break a single statement into multiple code lines.

6 years ago, and updated 5 years ago
(1 Comments , last by Anonymous )

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Mike Prestwood
10. JavaScript Event Model Description of the JavaScript event handlers.
11 years ago, and updated 6 years ago

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Mike Prestwood
11. JavaScript FAQ JavaScript frequently asked questions.
11 years ago, and updated 6 years ago

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Mike Prestwood
12. JavaScript If Statement (if..else if..else)

Same as C/C++ but, as usual, the semicolons are optional.

5 years ago

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Mike Prestwood
13. JavaScript Literals (quote or apostrophe)

Literals use either an apostrophe (also known as a single quote) as in 'Prestwood' or quoted as in "Prestwood". If you need to embed an apostrophe in an apostrophe-literal or a quote in a quoted-literal, preced it with a slash as in \' and \".

6 years ago, and updated 5 years ago

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14. JavaScript Logical Operators

JavaScript logical operators:

and, && and, as in this and that
or, || or, as in this or that
!, Not Not, as in Not This

5 years ago

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Mike Prestwood
15. JavaScript Overview and History

Language Overview: Class-like language with limited but usable class-like and object-like functionality but no formal inheritance nor visibility control, etc.

Target Platforms: JavaScript is most commonly used to extend HTML by executing code on the browser side when visiting a website. It does have other uses including server side scripting and AJAX.

6 years ago, and updated 5 years ago

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Mike Prestwood
16. JavaScript Report Tools Overview

No built-in report writer but because JavaScript most frequently targets website development (a document interfaced GUI), a common solution is to simply output an HTML formatted page with black text and a white background (not much control but it does work for some situations).

5 years ago

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Mike Prestwood
17. JavaScript String Concatenation (+)

To concatenate two strings, a string to an integer, or a string to a floating point number, use the + operator. JavaScript performs implicit casting when concatenating a string and a number. For example, to convert a floating point number to a string just concatenate an empty string to the number as in "" + 3.2.

6 years ago, and updated 5 years ago

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Mike Prestwood
18. JavaScript Unary Operators

An operation with only one operand (a single input). JavaScript unary operators include ++ and --. They can be used either before or after a variable as in: a++, b--, and ++a, and --b.

6 years ago, and updated 5 years ago

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Mike Prestwood
19. JavaScript Variables (var x = 0;)

JavaScript is a loosely typed language. Each variable is cast in usage as string, number, boolean, function, or object.

Variable names are case sensitive.

Alternatively, you can specify the value when you declare a variable:

var FirstName = "Mike";
var LastName = "Prestwood";
var Age = 42;
6 years ago, and updated 5 years ago

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Mike Prestwood
20. Validating Form Fields Adding JavaScript to your HTML forms to validate form fields.
6 years ago, and updated 6 years ago

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