📄 14.21 通过两点坐标计算直线距离.htm
字号:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>标题页</title>
<script LANGUAGE="JavaScript">
function distanceCAL(form)
{
var x1 = eval(form.x1.value); //获取第一点的X坐标
var y1 = eval(form.y1.value); //获取第一点的Y坐标
var x2 = eval(form.x2.value); //获取第二点的X坐标
var y2 = eval(form.y2.value); //获取第二点的Y坐标
var calX = x2 - x1;
var calY = y2 - y1;
form.result.value = Math.pow((calX *calX + calY * calY), 0.5);
}
</script>
</head>
<body >
<form>
<table border=3 cellspacing=2 cellpadding=5>
<tr>
<td colspan=4 align=center height="18">
<strong><span style="font-size: 14pt">两点的直线距离</span></strong></td>
</tr>
<tr>
<td colspan=2 align=center>
<span style="color: #666666">第一点的坐标</span></td>
<td colspan=2 align=center>
<span style="color: #999966">第二点的坐标</span></td>
</tr>
<tr>
<td align=center>X 轴</td>
<td align=center>Y 轴</td>
<td align=center>X 轴</td>
<td align=center>Y 轴</td>
</tr>
<tr>
<td align=center><input type=text name=x1 size=5></td>
<td align=center><input type=text name=y1 size=5></td>
<td align=center><input type=text name=x2 size=5></td>
<td align=center><input type=text name=y2 size=5></td>
</tr>
<tr>
<td colspan=4 align=center>
<input type=button value="计算距离" onClick="distanceCAL(this.form)">
<input type=text name=result size=20></td>
</tr>
</table>
</form>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -