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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 \!\@\#\$\^\&\*\-\_\+\=\:\\\'\;\,\.\/\?\(\)\{\}\[\]\<\>]*$/; .

jquery获取值，prop和attr的区别