📄 area.htm
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<!-- This script has been in the http://www.javascripts.com Javascript Public Library! -->
<!-- Note that though this material may have been in a public depository, certain author copyright restrictions may apply. -->
<html>
<head>
<style>
<!--
body, p, div,td,input {font:menu;line-height: 150%}
.div { font-family: 宋体; font-size: 12px; line-height: 150% }
-->
</style>
<title>Area Calculator</title>
</head>
<body>
<script language="JavaScript">
function Circle(form)
{form.circleanswer.value = form.circleradius.value * form.circleradius.value * 3.14159265}
function Rec(form)
{form.recanswer.value = form.reclength.value * form.recheight.value}
function Sphere(form)
{form.sphereanswer.value = form.sphereradius.value * form.sphereradius.value * 3.14159265 * 4}
function Square(form)
{form.squareanswer.value = form.squarelength.value * form.squarelength.value}
function Tri(form)
{form.trianswer.value = form.tribase.value * form.triheight.value / 2}
</script>
<form>
<center><h1>Circle</h1>
Enter the radius<input type="text" name="circleradius"><br>
<input type="button" value="Find Area" onClick="Circle(this.form)"><br>
<input type="text" name="circleanswer">square feet<br>
<h1>Rectangle</h1>
Enter the length of one side<input type="text" name="reclength"><br>
Enter the height of one side<input type="text" name="recheight"><br>
<input type="button" value="Find Area" onClick="Rec(this.form)"><br>
<input type="text" name="recanswer">square feet<br>
<h1>Sphere</h1>
Enter the radius<input type="text" name="sphereradius"><br>
<input type="button" value="Find Area" onClick="Sphere(this.form)"><br>
<input type="text" name="sphereanswer">square feet<br>
<h1>Square</h1>
Enter the length of one side<input type="text" name="squarelength"><br>
<input type="button" value="Find Area" onClick="Square(this.form)"><br>
<input type="text" name="squareanswer">square feet<br>
<h1>Triangle</h1>
Enter the length of the base<input type="text" name="tribase"><br>
Enter the height<input type="text" name="triheight"><br>
<input type="button" value="Find Area" onClick="Tri(this.form)"><br>
<input type="text" name="trianswer">square feet
</form>
<br>
<br>
</body>
</html>
<!-- Simba says Roar. -->
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