RegExp Object

Using the RegExp (regular expression) object and it's associated methods allows you to perform powerful pattern-matching searches within strings.

Constructor

[new] RegExp ( RegExp pattern [,RegExp flags] )

A Regexp object instance is constructed and returned or an exception is thrown.

Instance Methods

exec	Searches a string for a specified value and returns the found value(s) and position.
test	Returns a true or a null after performing a search for a specified value.

Example

var  pattern= new RegExp('is','ig');
response.write(pattern.exec('Is this all there iS?\n or IS there more?'), '\n');
response.write(pattern.exec('Is this all there iS?\n or IS there more?'), '\n');
response.write(pattern.exec('Is this all there iS?\n or IS there more?'), '\n');
response.write(pattern.exec('Is this all there iS?\n or IS there more?'), '\n');

//output:
//Is
//is
//iS
//IS

Related Topics

RegExp Patterns , RegExp Flags , RegExp.exec() , RegExp.test()