test Method (Windows Scripting - JScript)

Returns a Boolean value that indicates whether or not a pattern exists in a searched string.

Syntax

rgExp.test(str) 

Arguments

• rgExp
  Required. An instance of a Regular Expression object containing the regular expression pattern and applicable flags.

• str
  Required. The string on which to perform the search.

Remarks

The test method checks to see if a pattern exists within a string and returns true if so, and false otherwise.

The properties of the global RegExp object are not modified by the test method.

The following example illustrates the use of the test method. To use this example, pass the function a regular expression pattern and a string. The function will test for the occurrence of the regular expression pattern in the string and return a string indicating the results of that search:

function TestDemo(re, teststring)
{
   // Test string for existence of regular expression.
   var found = re.test(teststring)

   // Format the output.
   var s = "";
   s += "'" + teststring + "'"

   if (found)
      s += " contains ";
   else
      s += " does not contain ";
      
   s += "'" + re.source + "'"
   return(s);
}

Requirements

Version 3

Applies To: Regular Expression Object (Windows Scripting - JScript)

Change History

See Also

RegExp Object (Windows Scripting - JScript)
Regular Expression Object (Windows Scripting - JScript)
Regular Expression Syntax (Scripting)