Validates an input field to make sure that only number is entered. If you enter letter it alert.

Add or change options on a form select menu. This JavaScript will also allow sub-group items, for additional selections.

Let use this multiple select script if you want to create select boxes that relate to anothers, by onchange event. Choose a value in the first select options and the script will precess and display the available select values in the second box to match your selection automatically. Easy to use, with full comments in source code.

You can also see more for multiple select, dynamic dropdown,...

In order to display detailed information about some object; such as member or product; you can use simple JavaScript code. This is upgraded version of Click Radio Button to View Information; this script display image for each item.

Automatically adjusts the values in the selection box depending on the item selected in the dropdown menu. Awesome!

Handle and precess all of your form field validations using just one script. This JavaScript can verify numeric strings; monitor the status of the CapsLock state; verify empty strings, numeric, date, alphabetical, or e-mail fields value; confirm passwords; verify the formatting of phone numbers; monitor the minimum/maximum numbers of form input characters. Includes language-independent error messages and displays error messages in a div or using an alert box.

Customize Dropdown Menu is designed to display some choices, as: languages, countries, themes,... but it's differrent from original version in browsers. This tool combine CSS and JavaScript to create a dropdown you can add image to tilte, every choice.

Version 2: check if JavaScript is disabled, then add normal dropdown menu

Let's try dropdown below and feel differences.
Tested: IE 7, Opera 9, Firefox 2, Netscape 8.

This is one of JavaScripts that make chaining dropdown lists; in this JavaScript example is Country, State, City, select a country in first HTML dropdown for selecting states in the second dropdown, for cities in last dropdown.

You can customize this JavaScript code as you need, such as automobiles: type/make/model or books: publisher/author/title.

On the Internet in general and JavaScript in particular, there are many codes and tools to help your visitors copy text directly into the clipboard without through the browser or operating system. However, most restrict of these code are they only run on Internet Explorer, so you try to use this effect, it uses a Flash file to convert and perform the copy to the clipboard.

This simple JavaScript creates a drop-down JavaScript menu that opens pages on a single click and button when selected from the menu.