regexp:test()
regexp:test() tests to see whether a string matches a specified regular expression.
Syntax
js
regexp:test(testString, regExpString[, flagsString])
Parameters
testString- 
    
The string to test.
 regExpString- 
    
The JavaScript style regular expression to evaluate.
 flagsStringOptional- 
    
An optional string containing character flags.
 
The character flags are:
Return value
true if the specified regexp matches the test string.