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  • 计算网页上坐标的距离

    脚本说明:
    把如下代码加入<body>区域中
    <SCRIPT LANGUAGE="JavaScript">
    <!-- Begin
    function distance(form) {
    var x1 = eval(form.x1.value);
    var y1 = eval(form.y1.value);
    var x2 = eval(form.x2.value);
    var y2 = eval(form.y2.value);
    var xdiff = x2 - x1;
    var ydiff = y2 - y1;
    form.answer.value = Math.pow((xdiff * xdiff + ydiff * ydiff), 0.5);
    }
    // End -->
    </script>
    <center>
    <form>
    <table border=3 cellspacing=2 cellpadding=5>
    <tr>
    <td colspan=4 align=center>计算平面两点之间的距离</td>
    </tr>
    <tr>
    <td colspan=2 align=center>A点</td>
    <td colspan=2 align=center>B点</td>
    </tr>
    <tr>
    <td align=center>A点横坐标</td>
    <td align=center>A点纵坐标</td>
    <td align=center>B点横坐标</td>
    <td align=center>B点纵坐标</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="distance(this.form)"></td>
    </tr>
    <tr>
    <td colspan=4 align=center><input type=text name=answer size=20></td>
    </tr>
    </table>
    </form>
    </center>
    如有疑问，请和我一起讨论。
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  • 原文地址：https://www.cnblogs.com/crmhf/p/3823199.html
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