How to Get Page Size & Scroll in JavaScript
JavaScript lets you identify the height of a user's window and scroll down the page automatically. The technique should be used sparingly on a Web page, because it does not provide a good user...
View ArticleHow to Display a Prime Factor in Javascript
Knowing how to calculate prime factors for a number is an important skill taught in high school mathematics. The Fundamental Theorem of Arithmetic states that non-prime positive integers can always be...
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How to Reduce Font Size on a Button With Javascript
Buttons are standard HTML elements created with the input tag. Buttons have a uniform appearance that's suited to the way buttons appear in the user's operating system. Cascading Style Sheets, or CSS,...
View ArticleHow to Update the Select Box With JavaScript
JavaScript allows you to set up a "select" box, which is the drop-down form element used to collect input from users. You can update and add a new value for users. This type of JavaScript feature is...
View ArticleHow to Change the Animated Color on a Page Background in JavaScript
The "body" HTML tag contains the color used in the background of a Web page. You can dynamically change the color by using JavaScript. The JavaScript loads when the user opens the Web page, and you can...
View ArticleHow to Hide Java Script Code
Some webmasters place JavaScript code directly in the HTML pages. Placing it in the pages makes it convenient to add and edit, but the code can be seen by search engines and readers who open the page...
View ArticleHow to Override an onClick Event in JavaScript
The "OnClick" event triggers when a user clicks an HTML element on your Web pages. You can create an OnClick function that overrides the standard OnClick event in JavaScript. The OnClick override...
View ArticleHow Do I Change the Class Name in JavaScript?
Classes are a way of identifying HTML elements on a Web page when using Cascading Style Sheets to change their appearance. The style sheet groups a set of style properties under a class name. Then, you...
View ArticleHow to Jump to Anchor With JavaScript
Anchor elements are used in HTML to make hyperlinks to other Web pages, but they can also be used to mark and link to different sections of a single page. A common technique is to create a table of...
View ArticleHow to Get an iFrame's Updated SRC in JavaScript
The "iframe" tag in HTML is used to create an inline frame. An inline frame is like other HTML frames, in that it contains another Web page within it. Inline frames, however, do not have to span across...
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How to Remove Non-Numeric Characters in Javascript
Everything a visitor types while on your website consists of text, even when the visitor types numbers. If your application expects to receive pure numeric input, your program must strip away...
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The Advantages of Java Script
JavaScript is a programming language commonly used in websites. JavaScript functions run at client side and are interpreted by the user's Web browser. JavaScript is relatively accessible to developers...
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How to Scroll Horizontally in Javascript
The National Institute on Aging recommends designing Web pages that do not require horizontal scrolling. When a Web page's content spills over to hidden areas to the right of the viewing area, Browsers...
View ArticleHow to Create a Checkbox Redirect
When you include a checkbox on your HTML page, you provide a space in which a user can check to acknowledge that he has done something like read a user agreement. Users can also make choices when a...
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How to Insert a Character at the Cursor in JavaScript
JavaScript is a client-side scripting language that can be used by Web developers to perform a variety of dynamic user interface tasks. User interface manipulations can range from simple responses...
View ArticleHow to Limit the Number of Checkboxes in Javascript
When you create a list of check box values for users to choose from, you can set a limit to how many they can check using JavaScript. You set the check box limit with the number of values the user can...
View ArticleHow to Use JavaScript to Control Disabled Color
JavaScript provides programmers with a client-side language that manipulates HTML elements on Web pages. You can use JavaScript to enable and disable a color on an element. You disable a color by...
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How to Rotate Photos in Slideshows With JavaScript
JavaScript is often used to produce dynamic effects on Web pages not possible with HTML alone. JavaScript offers you a lot of control over the elements of your page, even after it is loaded. For...
View ArticleHow to Embed a URL in a Script
Although you may choose to place links to URLs in the HTML of your Web page, you also may choose to link to URLs from the page using JavaScript. If you already are using a lot of JavaScript code on a...
View ArticleHow to Reinstall a Script
When you remove a script from the HTML of your Web page, you disable any of the functions that this script may have been able to perform for you. The type of function a script is able to perform...
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