Regular Expression Object

1. RegExp Object Overview

The RegExp object represents a regular expression, which is a powerful tool for performing pattern matching on strings

Creating a regular Expression object

var rgexp=/pattern/flags;

var rgexp=new RegExp ("pattern", ["flags"]);

The flags are identified in the following several:

G: Set current match to global mode

I: Ignore case detection in match

M: Multi-line search mode

2. Common methods of RegExp objects

Regexpobject.test (String)

Returns True if the string contains text that matches regexpobject, otherwise false

Reg.compile (Pattern,[flags]): Compiling regular expressions

Reg.exec (STR): Retrieves the value specified in the string to return the found values and determines its location

Reg.test (STR): Retrieves the value specified in the string, returning True or false

Regular Expression Object