pattern: test string: Test pattern and string

pattern.test(testString) testing Test pattern for a match in testString. Return true if found, otherwise return false.

pattern.exec(testString) abdcdef Test pattern for a match in testString. Return the matched text if found, otherwise return null.

testString.match(pattern) ttttesting Search testString for a match against pattern. Return matches as an array.

testString.search(pattern) testinggg Search testString for pattern, return position of match. 'pattern' can be String or RegExp