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This video on JavaScript Regular Expressions will introduce you to the basic working of these expressions. A Regular Expression is a sequence of characters that forms a search pattern. This sequence can be used for text search and text replacement. To help understand the concepts better, we explain what patterns, flags and quantifiers along with a demo of examples. <br><br>Website used for the demo - https://regexr.com/ <br><br>This JavaScript Certification course helps you master the JavaScript programming language in an all-inclusive training program that includes complete JavaScript fundamentals, jQuery, Ajax, and more. You will apply your skills by building a real-time chat application.<br><br>JavaScript Course Overview:<br>This training program entails the fundamentals of JavaScript, including the enumeration and elaboration of various data types in JavaScript, an explanation of loops and conditional statements in JavaScript, and an overview of the concepts of objects and variables in JavaScript.<br><br>JavaScript Certification Key Features<br>1. 100% Money Back Guarantee<br>2. 7 complete JavaScript courses<br>3. Covers Ajax, jQuery, and node.js<br>4. Build a real-time chat application<br>5. Course completion certificate<br><br>ud83dudc49Learn more at: https://bit.ly/2SDfYlR<br><br><br>
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What are Regular expressions? A regular expression is a sequence of characters that forms a search pattern AaBbCc…1234.. !@#$%^ The user can define what needs to be searched in a text with the help of regular expressions Regular expressions can be of any number of characters, be it alphabet, digits or special characters These expressions are more commonly used for text search and text replacement operations General Syntax: /pattern/flag
Flags, Patterns and Quantifiers Flags There are several flags you can specify to alter the behaviour of a regular expression. Flags may be appended to the end of a regex literal or they may be specified as the second argument to the Regular expression
Flags, Patterns and Quantifiers Patterns Brackets are used to find the range of characters
Flags, Patterns and Quantifiers Quantifiers Quantifiers define the number of occurrences of a string
