JavaScript Objects Examples

Examples of using the built-in JavaScript objects.

String Object

Return the length of a string
Style strings
Return the position of the first occurrence of a text in a string - indexOf()
Search for a text in a string and return the text if found - match()
Replace characters in a string - replace()

More String object examples in our JavaScript reference.

Date Object

Use Date() to return today's date and time
Use getTime() to calculate the years since 1970
Use setFullYear() to set a specific date
Use toUTCString() to convert today's date (according to UTC) to a string
Use getDay() and an array to write a weekday, and not just a number
Display a clock

More Date object examples in our JavaScript reference.

Array Object

Create an array
Use a for...in statement to loop through the elements of an array
Join two arrays - concat()
Put array elements into a string - join()
Literal array - sort()
Numeric array - sort()

More Array object examples in our JavaScript reference.

Boolean Object

Check Boolean value

More Boolean object examples in our JavaScript reference.

Math Object

Use round() to round a number
Use random() to return a random number between 0 and 1
Use max() to return the number with the highest value of two specified numbers
Use min() to return the number with the lowest value of two specified numbers
Convert Celsius to Fahrenheit

More Math object examples in our JavaScript reference.

	Learn XML with Stylus Studio XML Editor – Free Download Stylus Studio provides tools for editing and debugging XML, XSLT, XML Schema, DTD, XQuery, Web Services,and more! Using Stylus Studio XML Tools You Can: Convert any File to XML (CSV, Tab-separated, HTML, EDI & more.) Access and Update any database as XML (SQL Server, Oracle, MySQL & more.) View, Edit, Parse, and Validate XML files. Publish your data, including XML to HTML or XML to PDF See why millions use Stylus Studio as their preferred XML tool. Download a FREE TRIAL or watch an online VIDEO DEMO today!

Jump to: Top of Page or HOME or Printer friendly page

W3Schools provides material for training only. We do not warrant the correctness of its contents. The risk from using it lies entirely with the user. While using this site, you agree to have read and accepted our terms of use and privacy policy.

Copyright 1999-2008 by Refsnes Data. All Rights Reserved.

W3Schools was converted to XHTML in December 1999