How to Highlight an HTML Title Bar Table
Some Web designers use tables as page headers on HTML pages. You can use the "onmouseover" event to highlight the table header when the user hovers the mouse over the table. You must change the...
View ArticleHow to Display a New Javascript Window With Dimensions
Popup windows display Web pages in small browser windows often limited in size and functionality. Though out of fashion in modern Web design, popups still have their uses in a variety of contexts, such...
View ArticleHow to Show & Hide Text Boxes in Javascript
JavaScript lets you set the "visibility" property for a text box. You can dynamically set the visibility property to show or hide a text box. Typically, you show and hide a text box based on user input...
View ArticleHow to Use Javascript to Count the Number of Nodes in XML
The JavaScript function "getElementsByTagName" retrieves the number of nodes and returns an array of records. You use this array to determine the number of nodes returned, so you can loop through each...
View ArticleHow to Open a New Window With an Anchor in Javascript
HTML anchor tags, also known as links, can do much more than simply send browsers to new Web pages when users click the links. Every anchor has an "href" attribute. A Web developer usually sets that...
View ArticleHow to Define a JavaScript Function
The "function" keyword defines a JavaScript function in your HTML pages. You must also create a "script" HTML tag that tells the server that the code is JavaScript and not a part of the HTML content or...
View ArticleHow to Access the ASP.NET Repeater in JavaScript
The ASP.NET repeater control lets you bind XML data and repeat the data in columns. You use the "ClientScript" class to add a JavaScript event to the repeater control. Registering a JavaScript event...
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How to Zoom an Image Within a DIV
You may have seen images on Web pages that zoomed when you clicked them. Presenting a smaller version of an image inside a DIV element helps preserve valuable Web page space. Site visitors can then...
View ArticleHow to Open a File in Javascript
JavaScript allows you to open a file, so the user can choose to save the file from the browser, or just read the file and close it. Typically, this type of programming is used to open a file when a...
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How to Use a Variable Menu List in JavaScript
A drop-down menu is an expandable list of text entries on a Web page that users can select from with their mouse. A user's selection might be submitted as part of a form or used to trigger JavaScript...
View ArticleHow to Add Items to a List Box Using JavaScript
JavaScript is client-side code, so you use the language to dynamically change HTML controls after the page loads on the browser. You can dynamically remove and add drop-down list elements, so you can...
View ArticleHow to Set a Tag Class in JavaScript
CSS classes let you create the features for HTML tags without the need to set up the class for each tag separately. You create one CSS class and add the class name to the tag's "class" property. You...
View ArticleHow to Split Strings Using JavaScript
JavaScript contains a "split" function that lets you separate strings into an array of values. You must define the delimiter, which is typically a comma for a list of data values or a space for a...
View ArticleHow to Check If a Button was Clicked in Javascript
Each HTML element on your Web page has an "onclick" event. The onclick event triggers when your readers click the object, such as a button. Buttons allow you to run code when the button is clicked, so...
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How to Make a Checkbox Required on an Email Form
If your Web page contains an email form, you may wish to prevent users from submitting it until they perform certain tasks. A common task is checking a checkbox. You have probably seen sites that...
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How to Get All Anchors Related to Div ID in JQuery
Site developers need to obtain a collection of elements contained within another element on a Web page. Consider a DIV element that contains a product description. That DIV may also contain multiple...
View ArticleHow to Play an Embedded Object With JavaScript
Embedded objects include movie and sound files, and you have the option to play the file when the user opens the website or create a JavaScript button to play the file after the page loads. You use the...
View ArticleHow to Place an Existing Div Dynamically in jQuery
Part of the fun of creating Web pages is having the ability to move elements around the page. Static Web pages, which contain fixed elements, look the same every time you visit them. Using Cascading...
View ArticleHow to Refresh an HTML Image Area Map With JavaScript
Image maps are HTML structures used to make certain regions of images on your Web page into clickable hyperlinks. An image map is attached to an image via the "usemap" attribute; like most components...
View ArticleHow to Use Eclipse for Javascript
The free, open source Eclipse software development environment provides Web development tools natively. This includes support for the JavaScript scripting language. JavaScript is a client side...
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