JavaScript String Reference
JavaScript Strings
A JavaScript string stores a series of characters like "John Doe".
A string can be any text inside double or single quotes:
See Also:
JavaScript String Methods
| Name | Description |
|---|---|
| at() | Returns an indexed character from a string |
| charAt() | Returns the character at a specified index (position) |
| charCodeAt() | Returns the Unicode of the character at a specified index |
| codePointAt() | Returns the Unicode value at an index (position) in a string |
| concat() | Returns two or more joined strings |
| constructor | Returns the string's constructor function |
| endsWith() | Returns if a string ends with a specified value |
| fromCharCode() | Returns Unicode values as characters |
| includes() | Returns if a string contains a specified value |
| indexOf() | Returns the index (position) of the first occurrence of a value in a string |
| lastIndexOf() | Returns the index (position) of the last occurrence of a value in a string |
| length | Returns the length of a string |
| localeCompare() | Compares two strings in the current locale |
| match() | Searches a string for a value, or a regular expression, and returns the matches |
| padEnd() | Pads a string at the end |
| padStart() | Pads a string from the start |
| prototype | Allows you to add properties and methods to an object |
| repeat() | Returns a new string with a number of copies of a string |
| replace() | Searches a string for a pattern, and returns a string where the first match is replaced |
| replaceAll() | Searches a string for a pattern and returns a new string where all matches are replaced |
| search() | Searches a string for a value, or regular expression, and returns the index (position) of the match |
| slice() | Extracts a part of a string and returns a new string |
| split() | Splits a string into an array of substrings |
| startsWith() | Checks whether a string begins with specified characters |
| substr() | Deprecated. Use substring() or slice() instead. |
| substring() | Extracts characters from a string, between two specified indices (positions) |
| toLocaleLowerCase() | Returns a string converted to lowercase letters, using the host's locale |
| toLocaleUpperCase() | Returns a string converted to uppercase letters, using the host's locale |
| toLowerCase() | Returns a string converted to lowercase letters |
| toString() | Returns a string or a string object as a string |
| toUpperCase() | Returns a string converted to uppercase letters |
| trim() | Returns a string with removed whitespaces |
| trimEnd() | Returns a string with removed whitespaces from the end |
| trimStart() | Returns a string with removed whitespaces from the start |
| valueOf() | Returns the primitive value of a string or a string object |
Note
All string methods return a new value.
They do not change the original variable.
String HTML Wrapper Methods
HTML wrapper methods return a string wrapped inside an HTML tag.
These are not standard methods, and may not work as expected.
| Method | Description |
|---|---|
| anchor() | Displays a string as an anchor |
| big() | Displays a string using a big font |
| blink() | Displays a blinking string |
| bold() | Displays a string in bold |
| fixed() | Displays a string using a fixed-pitch font |
| fontcolor() | Displays a string using a specified color |
| fontsize() | Displays a string using a specified size |
| italics() | Displays a string in italic |
| link() | Displays a string as a hyperlink |
| small() | Displays a string using a small font |
| strike() | Displays a string with a strikethrough |
| sub() | Displays a string as subscript text |
| sup() | Displays a string as superscript text |
