js验证输入框中文

var el=new Array();var els=new Array();var msgs=new Array();var alertMsg;el[0]=new Array("txtMFirstName","isChinese(values)");el[1]=new Array("txtMLastName","isChinese(values)");el[2]=new Array("txtFFirstName","isChinese(values)");el[3]=new Array("txtFLastName","isChinese(values)");msgs[0]="请输入你的尊姓与大名，姓名必须是中文";msgs[1]="请输入你的尊姓与大名，姓名必须是中文";msgs[2]="请输入对方的尊姓与大名，姓名必须是中文";msgs[3]="请输入对方的尊姓与大名，姓名必须是中文";function checkForm(){storeElement();alertMsg="";for(var i=0;i<els.length;i++){if(els[i].value==""||els[i].value.length==0){alertMsg+="【温馨提示】"+msgs[i]+"\n\n";alert(alertMsg);els[i].focus();return false}else{if(el[i][1]!=""){var values=els[i].value;var check=eval(el[i][1]);if(!check){alertMsg+="◇"+msgs[i]+"\n\n";alert(alertMsg);els[i].focus();return false}}}}if(alertMsg!=null&&alertMsg!=""){alertMsg="【温馨提示】\n\n"+alertMsg;alert(alertMsg);return false}return true}function storeElement(){var doc=document;for(var i=0;i<el.length;i++){if(doc.getElementById(el[i][0])){els[i]=doc.getElementById(el[i][0])}}}function isChinese(astr){var lst=/[^\u4E00-\u9FA5]/;return!lst.test(astr)}

 <input name="txtMFirstName" id="txtMFirstName" type="text" class="ipt1" maxlength="2"   onkeyup="value=value.replace(/[^\u4E00-\u9FA5]/g,'')"/>