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Make JavaScript Math.random() useful

Posted on Aug 3, 2004 | Last Updated Sep 30, 2013

How to use the JavaScript Math.random function useful with round, ceiling, and floor.

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javscript, math.random, math.round, math.ceil, math.floor

Strip Character and Whitespace in JavaScript Function

Posted on Jan 6, 2004 | Last Updated Nov 3, 2011

Use this function to strip whitespace and any character from a string in JavaScript.

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strip whitespace javascript, white space, function, free, strip character

Select Some Checkboxes JavaScript Function

Posted on Jul 24, 2006 | Last Updated Nov 10, 2011

A new javascript function that allows you to control checkboxes in groups via a control checkbox.

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checkbox control, javascript, advanced

Dynamically change a form's action with JavaScript

Posted on Dec 11, 2008 | Last Updated Nov 12, 2011

JavaScript allows you to dynamically change a form's action. To make the function work in the new Google Chrome browser, you need to reference the action differently than you could in other browsers.

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javascript, form, action, browser, chrome

InnerHTML JavaScript Functions

Posted on Jan 13, 2005 | Last Updated Nov 8, 2011

Functions useful for working with named HTML elements with JavaScript.

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javascript object manipulation, named ids

Altering CSS Class Attributes with JavaScript

Posted on Jan 8, 2004 | Last Updated Nov 3, 2011

A useful JavaScript to instantly change the style values of a CSS class property.

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alter css class attribute javascript, dynamic html, dhtml, change style on-the-fly

UseMaps Crash IE When Changed

Posted on Mar 30, 2008 | Last Updated Nov 12, 2011

Dynamically changing an image's usemap property can cause Internet Explorer to crash completely. Here is a solution to changing usemaps with JavaScript.

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image maps, usemaps, use maps, dynamic, ie7, ie, internet explorer, javascript

Select Radio Inputs JavaScript

Posted on Aug 16, 2007 | Last Updated Nov 11, 2011

A free javascript function to choose radio inputs with a given value.

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javascript, radio, input, radios, inputs, form, forms, free, smo_selectRadioValues()

Manipulating Element Styles Based on CSS Classes Using Prototype

Posted on Dec 3, 2009 | Last Updated Dec 21, 2012

Example javascript function to change element display properties based on their classes using the Prototype JavaScript Framework.

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javascript, prototype, css, class, className, classNames, style

Compare Values with Arbitrary Comparison Operator

JavaScript for comparing values when the operator to use is variable.
Posted on Dec 21, 2012 | Last Updated Dec 21, 2012

JavaScript function and sample code to dynamically compare two values. Accepts numeric and/or alphanumeric values and does a comparison on them based on a comparison parameter.

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javascript, compare, comparison, dynamic, script, operator, math, numeric, alphanumeric, example, free
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