请清除circlecaluclator按钮上的错误 [英] please remove error at circlecaluclator button
本文介绍了请清除circlecaluclator按钮上的错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<html>
<head>
<title>CALUCLATING AREA AND PERIMETER</title>
<center><h1>CALUCLATOR FOR AREA & PERIMETER</h1></center>
<style>
</style>
<script language="JavaScript">
var x = new Array();
var y = new Array();
var vertices;
var digits;
var area;
var perimeter;
var r;
var carea;
var cperi;
function readUserData()
{
vertices = parseInt( document.getElementById("VERTICES").value );
if( (vertices < 2) || (vertices > 10 ) ) {
alert( "Vertices must be >= 2 and <= 10" );
return;
}
for( k = 0; k < vertices; k++ ) {
x[k] = parseInt( document.getElementById("X"+k).value );
y[k] = parseInt( document.getElementById("Y"+k).value );
}
x[vertices] = x[0];
y[vertices] = y[0];
}
function calculateArea()
{
area = 0.0;
for( k = 0; k < vertices; k++ ) {
xDiff = x[k+1] - x[k];
yDiff = y[k+1] - y[k];
area = area + x[k] * yDiff - y[k] * xDiff;
}
area = 0.5 * Math.abs(area);
}
function calculatePerimeter()
{
perimeter = 0.0
for( k = 0; k < vertices-1; k++ ) {
xDiff = x[k+1] - x[k];
yDiff = y[k+1] - y[k];
perimeter = perimeter +
Math.pow( xDiff*xDiff +
yDiff*yDiff, 0.5 );
}
}
function cir()
{
r= parseInt(document.getElementById("Y"+10).value);
carea=3.1429*(r*r);
cperi=6.2858*r;
alert(" circle area is "+carea);
alert(" circle perimeter is"+cperi);
}
function handleCalculate()
{
readUserData();
calculateArea();
calculatePerimeter();
alert("area is "+area);
alert("PERIMETER IS "+perimeter);
}
</script>
</head>
<body>
<div align="center">
<div class="content">
<form>
<table border="2" cellspacing="0">
cellpadding="2" style="border-collapse: collapse">
<tr>
<td colspan="2">Number of Vertices
<input type="text" id="VERTICES"
size="5" value="0"></td>
</tr>
<tr>
<td align="center">Vertex</td>
<td colspan="2" align="left">X Value</td>
<td align="left">Y Value</td>
</tr>
<tr>
<td align="center">1</td>
<td colspan="2"><input type="text"
id="X0" size="20"></td>
<td><input type="text" id="Y0" size="20"></td>
</tr>
<tr>
<td align="center">2</td>
<td colspan="2"><input type="text"
id="X1" size="20"></td>
<td><input type="text" id="Y1" size="20"></td>
</tr>
<tr>
<td align="center">3</td>
<td colspan="2"><input type="text"
id="X2" size="20"></td>
<td><input type="text" id="Y2" size="20"></td>
</tr>
<tr>
<td align="center">4</td>
<td colspan="2"><input type="text"
id="X3" size="20"></td>
<td><input type="text" id="Y3" size="20"></td>
</tr>
<tr>
<td align="center">5</td>
<td colspan="2"><input type="text"
id="X4" size="20"></td>
<td><input type="text" id="Y4" size="20"></td>
</tr>
<tr>
<td align="center">6</td>
<td colspan="2"><input type="text"
id="X5" size="20"></td>
<td><input type="text" id="Y5" size="20"></td>
</tr>
<tr>
<td align="center">7</td>
<td colspan="2"><input type="text"
id="X6" size="20"></td>
<td><input type="text" id="Y6" size="20"></td>
</tr>
<tr>
<td align="center">8</td>
<td colspan="2"><input type="text"
id="X7" size="20"></td>
<td><input type="text" id="Y7" size="20"></td>
</tr>
<tr>
<td align="center">9</td>
<td colspan="2"><input type="text"
id="X8" size="20"></td>
<td><input type="text" id="Y8" size="20"></td>
</tr>
<tr>
<td align="center">10</td>
<td colspan="2"><input type="text"
id="X9" size="20"></td>
<td><input type="text" id="Y9" size="20"></td>
</tr>
<tr>
<td align="center"><input type="button"
value="Calculate" önClick="handleCalculate()"></td>
<td align="center">
<input type="reset" value="Reset"></td>
</tr>
<tr><td>for circle:</td></tr>
<tr><td>ENTER radius <input type="text" id="Y10" size="20"></td></tr>
<tr><td><input type="submit" value="circleCaluclator" önSubmit="cir()"></td></tr>
</form>
</table></div>
</div>
</body>
</html>
推荐答案
将onSubmit()替换为onClick()
然后检查您的答案
replace onSubmit() with onClick()
and now check ur answer
这篇关于请清除circlecaluclator按钮上的错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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