This is a quick reference list of JavaScript string methods and properties with examples of how they are used.

• JavaScript – String charAt() Method
  The String charAt() method returns the character at a specified position in a string.
• JavaScript – String charCodeAt() Method
  The String charAt() method returns the Unicode (UTF-16) of the character at a specified position in a string.
• JavaScript – String codePointAt() Method
  The String codePointAt() method returns the Unicode of the character at a specified position in a string.
• JavaScript – String concat() Method
  The String concat() method joins two or more strings, returning a new string, without changing the existing strings.
• JavaScript – String constructor Property
  The String constructor property returns the function that created the String prototype.
• JavaScript – String endsWith() Method
  The String endsWith() method returns true if a string ends with a specified string, if not, it returns false. The method is case sensitive.
• JavaScript – String.fromCharCode() Method
  The String.fromCharCode() method converts Unicode values to characters.
• JavaScript – String includes() Method
  The String includes() method returns “true” if a string contains a specified string, if not, it returns “false”. The method is case sensitive.
• JavaScript – String indexOf() Method
  The String indexOf() method returns the position of the first occurrence of a value in a string, and returns -1 if the value is not found.
• JavaScript – String lastIndexOf() Method
  The String lastIndexOf() method returns the position of the last occurrence, searching from the end to the beginning, of a specified value in a string.
• JavaScript – String length Property
  The String length property returns the length of a string. An empty string will return 0.
• JavaScript – String localeCompare() Method
  The String localeCompare() method compares two strings in the current locale, and returns their sort order -1, 1, or 0 (before, after, equal).
• JavaScript – String match() Method
  The String match() method matches a string against a regular expression, returning an array with the matches or null if no match is found.
• JavaScript – String prototype Property
  The String prototype property allows the addition of new properties and methods to strings.
• JavaScript – String repeat() Method
  The String repeat() method returns a new string with a number of copies of an existing string, without changing the original string.
• JavaScript – String replace() Method
  The String replace() method searches a string for a value or a regular expression, and returns a new string with the values replaced.
• JavaScript – String search() Method
  The String search() method matches a string against a regular expression, returning the position of the first match or -1 if no match is found.
• JavaScript – String slice() Method
  The String slice() method extracts a part of a string, returning the extracted part as a new string, without changing the original string.
• JavaScript – String split() Method
  The String split() method splits a string into an array of substrings, and returns a new array, without changing the original string.
• JavaScript – String startsWith() Method
  The String startsWith() method returns “true” if a string starts with a specified string, if not, it returns “false”.
• JavaScript – String substr() Method
  The String substr() method extracts characters from a string starting at a specified position, returning the extracted part as a new string.
• JavaScript – String substring() Method
  The String substring() method extracts characters from a string, between two positions, returning a substring, while not changing the original string.
• JavaScript – String toLocaleLowerCase() Method
  The String toLocaleLowerCase() method converts a string to lowercase letters, using the current locale, without changing the original string.
• JavaScript – String toLocaleUpperCase() Method
  The String toLocaleUpperCase() method converts a string to uppercase letters, using the current locale, without changing the original string.
• JavaScript – String toLowerCase() Method
  The String toLowerCase() method converts a string to lowercase letters, without changing the original string.
• JavaScript – String toString() Method
  The String toString() method returns a string object as a string, without changing the original string.
• JavaScript – String toUpperCase() Method
  The String toUpperCase() method converts a string to uppercase letters, without changing the original string.
• JavaScript – String trim() Method
  The String trim() method removes whitespace from both sides of a string, without changing the original string.
• JavaScript – String trimEnd() Method
  The String trimEnd() method removes whitespace from the end of a string, without changing the original string.
• JavaScript – String trimStart() Method
  The String trimStart() method removes whitespace from the beginning of a string, without changing the original string.
• JavaScript – String valueOf() Method
  The String valueOf() method returns the primitive value of a string, without changing the original string.