JavaScript: Functions and Regular Expressions

Course details

In JavaScript, all functions are technically Function objects and provide users with an alternative way to encapsulate statements to perform more powerful and useful actions in a reusable piece of code. Regular expressions ease the task of validating data in JavaScript programs. This course will explore how to use Function objects and useful predefined functions that are part of the JavaScript language. It will also detail the regular expression support built into JavaScript that allows developers to perform pattern matching and validation of user-entered data. Specific topics covered will include Function objects, recursion, anonymous functions, predefined JavaScript functions, and pattern matching using regular expressions. This course is one of a series covering the fundamentals of the JavaScript language.

• recognize how function objects are defined and executed
• recognize the uses for anonymous functions
• recognize how to call a function recursively
• identify the appropriate predefined function for a given task
• use the best approach to define and call a function object in a given scenario
• complete a recursive function
• use predefined JavaScript functions in a function expression
• recognize how to create and initialize a RegExp expression object
• choose an appropriate method to use with a regular expression and predict the result, in a given scenario
• determine the output for a regular expression that includes attribute characters
• recognize the results of using the replace method with a regular expression containing various characters
• recognize how specific special characters are used in testing a string for a specific pattern
• define a regular expression using special characters and repetition characters
• choose the regular expression that will detect a given pattern
• recognize which entries would be validated by a given regular expression
• create and initialize a RegExp object to detect a common pattern
• validate a common pattern using a regular expression method