javascript正则表达式验证用户名
要求用户名可以是数字、字母、汉字，其他的字符都不允许，怎么写？看书写了几次都不对

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HTML code<script type="text/javascript"> var p = /^(?=.*\d)(?=.*[a-zA-Z])(?=.*[\u4e00-\u9fa5]).*$/ var arr=["asdf汉字","1a^","1A","11","1a2A","a1b2c汉字","a1汉字b2cA"] for(var i=0;i<arr.length;i++){ document.write(arr[i].replace(" ","&nbsp;")+":"+p.test(arr[i])+"<br/>"); }</script>
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/^[a-zA-Z0-9\u4E00-\u9FFF]{2,10}$/
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一时搞错，再来

HTML code<script type="text/javascript"> var p = /^(?=.*\d)(?=.*[a-zA-Z])(?=.*[\u4e00-\u9fa5])[\da-zA-Z\u4e00-\u9fa5]+$/ var arr=["asdf汉字","1a^","1A","11","1a2A","a1b2c汉字","a1汉字b2cA!"] for(var i=0;i<arr.length;i++){ document.write(arr[i].replace(" ","&nbsp;")+":"+p.test(arr[i])+"<br/>"); }</script>
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哦，我那个是三者都一定要输入了，结合2楼的话用/^[a-zA-Z0-9\u4E00-\u9FFF]+$/吧
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探讨
要求用户名可以是数字、字母、汉字，其他的字符都不允许，怎么写？看书写了几次都不对

------解决方案--------------------
^[0-9a-zA-z\u4E00-\u9FA5]+$