js提取数字和字母，数字自增，PM0001---->PM0002 / PM009--> PM010

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<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>js实现在字符串中提取数字和字母</title>
<script language="javascript" type="text/javascript">
function getNum(text){
var value = text.replace(/[^1-9]/ig,"");
var ss = value.substring(0,1);

var zimuheling=text.split(ss)[0];

var b = zimuheling.replace(/[^a-z]+/ig,"");

var zimujia1=((Number(value) + Number(1)))+"";

if(value.length != zimujia1.length){
var zimu=zimuheling.substr(0,zimuheling.length-1);
var aaaa=zimu+zimujia1;
alert('没有大于10'+aaaa);
}else{
var bbb=zimuheling+zimujia1;
alert('大于10了'+bbb);
}
}
</script>
</head>
<body>
<input type="text" id="btn_getNum"/>
<input type="button" value="得到数字" onclick="getNum(btn_getNum.value);"/>
</body>
</html>

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js提取数字和字母 ，数字自增，PM0001---->PM0002 / PM009--> PM010

js提取数字和字母，数字自增，PM0001---->PM0002 / PM009--> PM010