X
HOME HTML5 CSS3 JAVASCRIPT SQL PHP5 JQUERY ANGULAR BOOTSTRAP3 XML MORE...
REFERENCES | EXAMPLES | FORUM | ABOUT

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:

var carname = "Volvo XC60";
var carname = 'Volvo XC60';

String indexes are zero-based: The first character is in position 0, the second in 1, and so on.

For a tutorial about Strings, read our JavaScript String Tutorial.


String Properties and Methods

Primitive values, like "John Doe", cannot have properties or methods (because they are not objects).

But with JavaScript, methods and properties are also available to primitive values, because JavaScript treats primitive values as objects when executing methods and properties.


String Properties

Property Description
constructor Returns the string's constructor function
length Returns the length of a string
prototype Allows you to add properties and methods to an object

String Methods

Method Description
charAt() Returns the character at the specified index (position)
charCodeAt() Returns the Unicode of the character at the specified index
concat() Joins two or more strings, and returns a new joined strings
fromCharCode() Converts Unicode values to characters
indexOf() Returns the position of the first found occurrence of a specified value in a string
lastIndexOf() Returns the position of the last found occurrence of a specified value in a string
localeCompare() Compares two strings in the current locale
match() Searches a string for a match against a regular expression, and returns the matches
replace() Searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced
search() Searches a string for a specified value, or regular expression, and returns the 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
substr() Extracts the characters from a string, beginning at a specified start position, and through the specified number of character
substring() Extracts the characters from a string, between two specified indices
toLocaleLowerCase() Converts a string to lowercase letters, according to the host's locale
toLocaleUpperCase() Converts a string to uppercase letters, according to the host's locale
toLowerCase() Converts a string to lowercase letters
toString() Returns the value of a String object
toUpperCase() Converts a string to uppercase letters
trim() Removes whitespace from both ends of a string
valueOf() Returns the primitive value of a String object

String HTML Wrapper Methods

The HTML wrapper methods return the string wrapped inside the appropriate HTML tag.

These are not standard methods, and may not work as expected in all browsers.

Method Description
anchor() Creates 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



Your suggestion:

Close [X]

Thank You For Helping Us!

Your message has been sent to W3Schools.

Close [X]
Search w3schools.com:

WEB HOSTING

UK Reseller Hosting

WEB BUILDING

Download XML Editor FREE Website BUILDER Free HTML5 Templates

SHARE THIS PAGE

facebook