<script language="JavaScript" type="text/javascript"> var a='asdfas123^dfa123' alert(a.replace(/[a-z]/gi,"")) </script>
<input type="text" id="txt" /> <input type="button" onclick="check()" value="检测输入"/> <script> function check(){ var reg=/[A-Za-z]/g; var input=document.getElementById("txt").value; var result=input.replace(reg,""); alert(result); } </script>
<html> <head> <title>Untitled Page</title> <script type="text/javascript"> var str="aaa111bbb222cccddd333e4"; var re = /[a-zA-Z]+/g; alert(str.replace(re,"")); </script> </head> <body> </body> </html>
<html> <head></head> <body> <input type="text" id="txt" /> <input type="button" onclick="check()" value="检测输入"/> <script> function check() { var reg=/[A-Za-z]+/g; var input=document.getElementById("txt").value; var m=reg.test(input) if(m==false)alert(1111111); if(m==true)alert(222222222); } </script> </body> </html>感谢大家 已经搞定了 就怎么几行我整了半天 谢谢!!大家
var a='asdfas123^dfa123'
alert(a.replace(/[a-z]/gi,""))
</script>
<input type="button" onclick="check()" value="检测输入"/>
<script>
function check(){
var reg=/[A-Za-z]/g;
var input=document.getElementById("txt").value;
var result=input.replace(reg,"");
alert(result);
}
</script>
<head>
<title>Untitled Page</title>
<script type="text/javascript">
var str="aaa111bbb222cccddd333e4";
var re = /[a-zA-Z]+/g;
alert(str.replace(re,""));
</script>
</head>
<body>
</body>
</html>
<head></head>
<body>
<input type="text" id="txt" />
<input type="button" onclick="check()" value="检测输入"/>
<script>
function check()
{
var reg=/[A-Za-z]+/g;
var input=document.getElementById("txt").value;
var m=reg.test(input)
if(m==false)alert(1111111);
if(m==true)alert(222222222);
}
</script>
</body>
</html>感谢大家 已经搞定了 就怎么几行我整了半天 谢谢!!大家