求一个用户名的正则

Question

包含 数字 字母 下划线_  减号-   单引号’在线等，马上结账

Answer 1

var reg = /^[\w'-]*$/g;

Answer 2

var reg = new RegExp("^[\\w_'-]&","g");

Answer 3

var pat = new RegExp("^[\\w_'-]&","g");
alert(pat.test("aaaa"));可是alert的是false啊

Answer 4

re=/[a-zA-Z-_0-9\']{8,}/gi
单引号不建议添加。而且，CSDN会把英文的单引号转换成中文的单引号。请修正下再测试

Answer 5

<script language="JavaScript" type="text/javascript">
            window.onload=function(){
            var s="aaaaax?";
               var rex=/^[\w*|-|']*$/i;
               alert(rex.test(s));
              
            }        </script>

Answer 6

 var pattern = /^[\w\d_\'-]+$/;
 alert(pattern.test(str));

Answer 7

<script type="text/javascript">
<!--
 var reg = /^[-0-9a-z\']+$/i;
 alert(reg.test("csdn-163"));
 alert(reg.test("c'sdn'-163"));
 alert(reg.test("cs__dn-163"));//-->
</script>

Answer 8

function checkName(){
var username=document.getElementById("username").value;
var tt=/^['0-9A-Za-z_-]*$/;
if(tt.test(username)){
alert("正确");
}else{
alert("不正确");
}
}