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Example 7.8:
Passing Multiple Values
This page uses a function, Percentage(sNum, sPerc), which
accepts two arguments in order to perform a percentage calculation. (If you didn't type numbers into the Prompt box, you will have seen an error--we haven't done any error checking in this script.)
These are the scripts we used. First, in the HEAD:
<![CDATA[
<SCRIPT LANGUAGE="JavaScript">
<!--
function Percentage(nNum, nPerc) {
var nResult = nNum * (nPerc/100)
return nResult
}
//-->
</SCRIPT>
]]>
Later in the script the function is called with this script:
<![CDATA[
<SCRIPT LANGUAGE="JavaScript">
<!--
var nValue1 = prompt("Type in a number","")
var nValue2 = prompt("Type in a the percentage you wish to calculate","")
var nPercent = Percentage(nValue1, nValue2)
document.write("<H3>" + nValue2 + " percent of " + nValue1 + " = " + nPercent + "</H3>" )
//-->
</SCRIPT>
]]>
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