JavaScript String Object

The String object is used to manipulate a stored piece of text.

Examples

• Return the length of a string - How to return the length of a string.
• Style strings - How to style strings.
• The toLowerCase() and toUpperCase() methods - How to convert a string to lowercase or uppercase letters.
• The match() method - How to search for a specified value within a string.
• Replace characters in a string - replace() - How to replace a specified value with another value in a string.
• The indexOf() method - How to return the position of the first found occurrence of a specified value in a string.

Complete String Object Reference

For a complete reference of all the properties and methods that can be used with the String object, go to our complete String object reference.
The reference contains a brief description and examples of use for each property and method!

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String object

The String object is used to manipulate a stored piece of text.
Examples of use:
The following example uses the length property of the String object to find the length of a string:

var txt="Hello world!";
document.write(txt.length);

The code above will result in the following output:

12

The following example uses the toUpperCase() method of the String object to convert a string to uppercase letters:

var txt="Hello world!";
document.write(txt.toUpperCase());

The code above will result in the following output:

HELLO WORLD!