|Regular expression tester|
This online calculator allows user to experiment with regular expressions.
This online calculator parses emails from block of text using regular expression
|Select a phone number from the text|
This calculator uses regular expressions to select phone numbers from a large block of text
Hack the three-digit code
|Tips and tricks #1: How to set output value|
This article describes process of calculator creation and how to set output value.
|Tips and tricks #2: How to make calculator translatable into different languages |
This article describes the process of adding translation support to the calculator, so it can be translated into different languages.
|Tips and tricks #3: How to make calculator with custom errors|
This article describes the process of adding custom errors to the calculator
|Tips and tricks #4: How to make calculator with table output|
This article describes how to make calculator which outputs results in table format
|Tips and tricks #5: How to show/hide input and output controls in a calculator|
This article describes how to control visibility of input and output controls in a calculator
|Tips and tricks #6: How to make calculator with virtual keyboard|
This article describes how to create calculator with virtual keyboard using SVG image
|Tips and tricks #7: How to make calculator with SVG image map|
This article describes how to create calculator with image map using SVG image
|Map of France regions|
Simple image map of France regions to illustrate usage of SVG image maps
|Tips and tricks #8: How to reuse existing calculator|
This article describes process of reusing another calculator's logic (algorithm) in your calculator.
|Date to timestamp converter|
|Tips and tricks #9: Big numbers|
How to use big number input and PCR library.