Using the const Keyword
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/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
<HTML>
<HEAD>
<TITLE>const(ant)</TITLE>
<STYLE TYPE="text/css">
.cold {font-weight:bold; color:blue}
TD {text-align:center}
</STYLE>
<SCRIPT LANGUAGE="JavaScript">
const FREEZING_F = 32
var cities = ["London", "Moscow", "New York", "Tokyo", "Sydney"]
var tempsF = [33, 12, 20, 40, 75]
function showData() {
var tableData = ""
for (var i = 0; i < cities.length; i++) {
tableData += "<TR><TD>" + cities[i] + "</TD><TD "
tableData += (tempsF[i] < FREEZING_F) ? "CLASS='cold'" : ""
tableData += ">" + tempsF[i] + "</TR>"
}
document.getElementById("display").innerHTML = tableData
}
</SCRIPT>
</HEAD>
<BODY onLoad="showData()">
<H1>The const keyword</H1>
<HR>
<TABLE ID="temps">
<TR><TH>City<TH>Temperature</TR>
<TBODY ID="display">
</TBODY>
</TABLE>
</BODY>
</HTML>
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