javascript pattern只允许数字，英文字母和一些特殊字符

<script type="text/javascript">    var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;    var chPattern = /^[A-Za-z0-9  \!\@\#\$\^\&\*\-\_\+\=\:\\\'\;\,\.\/\?\(\)\{\}\[\]\<\>]*$/;       var s = "yang Hua Jie qwe231@[]";    alert(chPattern.test(s) );</script>

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