Weight Converter - JavaScript Made Easy

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Weight Converter		[View Sample]

This JavaScript creates a weight converter that can convert five different units at one time. To use it, choose your unit at the first line and enter the a number in the box beside it, then click the convert button. It automatically converts your choice to all five units. Very clean source code


Insert into <HEAD>


Insert into <BODY>
<script type="text/javascript" language="JavaScript"> <!-- // Script Editor: Howard Chen // Browser Compatible for the script: IE 3.0 or Higher // Netscape 2.0 or Higher // This script is free as long as you keep its credits /The way this works is the converter converts the number into the smallest unit in the converter, in this case it will be gram, and then it converts the unit fram gram to other units./ function nofocus() { document.convert.InUnit.focus() } var gValue = 1 var kgValue = 1000 var ounceValue = 28.3495 var lbValue = 453.592 var tValue = 907184 function toCM() { var i = document.convert.unit.selectedIndex var thisUnit = document.convert.unit.options[i].value if (thisUnit == "G") { document.convert.g.value = document.convert.InUnit.value } else if(thisUnit == "KG") { document.convert.g.value = document.convert.InUnit.value * kgValue } else if(thisUnit == "OUNCE" ) { document.convert.g.value = document.convert.InUnit.value * ounceValue } else if(thisUnit == "LB" ) { document.convert.g.value = document.convert.InUnit.value * lbValue } else if(thisUnit == "T" ) { document.convert.g.value = document.convert.InUnit.value * tValue } toAll() } function toAll() { var m = document.convert.g.value document.convert.kg.value = m / kgValue document.convert.ounce.value = m / ounceValue document.convert.lb.value = m / lbValue document.convert.t.value = m / tValue } //--> </script> <center><h1>Weight Converter</h1></center> <p> This script creates a weight converter that can convert five different units at one time. To use it, choose your unit at the first line and enter the a number in the box beside it, then click the convert button. It automatically converts your choice to all five units.</p> <div align="center"><form name="convert"> <table border=1> <tr><th>Unit</th><th>Number</th></tr> <tr> <td> <select name="unit"> <option value = "G">Gram <option value = "KG">Kilogram <option value = "OUNCE">Ounce <option value = "LB">Pound <option value = "T">U.S. Ton </select> </td> <td> <input type="text" name="InUnit" size="20" maxlength="20" value="0"> </td> </tr> <tr> <td> Gram: </td> <td> <input type="text" name="g" size="20" maxlength="20" value="0" onFocus="nofocus()"> </td> </tr> <tr> <td> Kilogram: </td> <td> <input type="text" name="kg" size="20" maxlength="20" value="0" onFocus="nofocus()"> </td> </tr> <tr> <td> Ounce: </td> <td> <input type="text" name="ounce" size="20" maxlength="20" value="0" onFocus="nofocus()"> </td> </tr> <tr> <td> Pound: </td> <td> <input type="text" name="lb" size="20" maxlength="20" value="0" onFocus="nofocus()"> </td> </tr> <tr> <td> U.S. Ton: </td> <td> <input type="text" name="t" size="20" maxlength="20" value="0" onFocus="nofocus()"></td> </tr> <tr> <td> <input type="Reset" value="Start Over" width=100> </td> <td> <input type="button" value="Convert" onClick="toCM()" width=150> </td> </tr> </table> </form> </font> </td></tr> </table></div>

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