Javascript 类型 <script language="javascript" type="text/javascript">for (var i=65,j=0;i<=90;i++,j++) //A-Z Ascii码{ document.writeln(String.fromCharCode(i) + ":" + j.toString() + "<br />"); //i为A-Z,j为0-25}</script> 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 目前就是这么做的,觉得很麻烦,因为只要给一个比如"B",然后return 1这样子的需求 这个是比较简单的傻瓜式代码<script language="javascript" type="text/javascript">var numbers0_25 = new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25);var a_z = new Array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z");for (var i=0;i<a_z.length;i++) //A-Z Ascii码{ document.writeln(a_z[i] + ":" + numbers0_25[i] + "<br />"); //i为A-Z,j为0-25}</script> 回2楼:楼主不早说,害得我费了这么大的力气,试试下面的var str = "B";document.write(str.charCodeAt() - 65); Thanks. 还有JS表示一个char,比如C中的'A'是怎么做的?把C中的'A'转化为65怎么实现? var str = "A";str.charCodeAt(); //65String.fromCharCode(65): //"A" 帅帅的宝宝必定全部代码,请速给分,谢谢配合<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head> <title> </title></head><body><script language="JavaScript">function returnnum(string1){ return string1.charCodeAt(0) - 65;}alert(returnnum("A"));alert(returnnum("O"));alert(returnnum("Z"));</script></body></html> 设为首页的代码? 请帮忙解决js的sessionStorage为什么不能用 JS在IE下获取图片大小 JS与IE版本的问题 100‘ jquery怎么退出执行操作 XMLHttpRequest的问题! 获取日期时的格式问题? 有没有什么方法能代替javascript prompt() 方法?因为它很丑而且... 如何确定DIV式的隐含菜单的位置,以避免分辨率变化等因素带来的影响(在线等待》 我的页面中有 上、下 两框架,我在上框架的底部放了一个弹出式菜单,结果弹出的菜单被下面的页面挡住了,各位大侠咋个办呢? 如何自己控制文本框高度 怎样用javascript实现下拉菜单和文本输入框合二为一?
<script language="javascript" type="text/javascript">
var numbers0_25 = new Array(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25);
var a_z = new Array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z");
for (var i=0;i<a_z.length;i++) //A-Z Ascii码
{
document.writeln(a_z[i] + ":" + numbers0_25[i] + "<br />"); //i为A-Z,j为0-25
}
</script>
回2楼:楼主不早说,害得我费了这么大的力气,试试下面的
var str = "B";
document.write(str.charCodeAt() - 65);
String.fromCharCode(65): //"A"
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>
</title>
</head>
<body>
<script language="JavaScript">
function returnnum(string1){
return string1.charCodeAt(0) - 65;
}
alert(returnnum("A"));
alert(returnnum("O"));
alert(returnnum("Z"));
</script>
</body>
</html>