Javascript: more string stuff

from here: http://articles.techrepublic.com.com/5100-10878_11-5147185.html

• concat() - Combines the text of two or more strings and returns a new string.
• indexOf() – Returns the starting index of a substring within another string. A –1 is returned if no match is found.
• charAt() – Returns the character at the specified location.
• lastIndexOf() - Returns the index within the string of the last occurrence of the specified value, or -1 if not found.
• match() - Used to match a regular expression against a string.
• substring() – A portion of a string is returned. A starting and ending location are passed to this function.
• replace() – Used to find a match between a regular expression and a string, and to replace the matched substring with a new substring.
• search() - Executes the search for a match of a regular expression. If successful, search returns the index of the match inside the string. Otherwise, it returns -1.
• slice() - Extracts a section of a string and returns a new string.
• split() - Splits a string into an array of strings by separating the string into substrings.
• length() – The length of the string is returned as the count of the number of characters it contains.
• toLowerCase() – Converts the entire string to lower case.
• toUpperCase() – Converts the entire string to upper case.