input输入限制

只能输入数字

    <el-input
        v-model="parseObj"
         placeholder="请输入数字"
         @keyup.native="parseObj=parseObj.replace(/[^\d]/g,'')" 
         maxlength="9"
       >
     </el-input>

输入框只能输入汉字

    <el-input
        v-model="parseObj"
         placeholder="请输入汉字"
         @keyup.native="parseObj=parseObj.replace(/[\u4E00-\u9FA5]/g,'')" 
         maxlength="9"
       >
     </el-input>

输入框输入除汉字以外的文字

    <el-input
        v-model="parseObj"
         placeholder="请输入汉字"
         @keyup.native="parseObj=parseObj.replace(/[\u4E00-\u9FA5]/g,'')" 
         maxlength="9"
       >
     </el-input>

输入框只能输入字母

    <el-input
        v-model="parseObj"
         placeholder="请输入字母"
         @keyup.native="parseObj=parseObj.replace(/[^A-Za-z0-9]/g,'')" 
         maxlength="9"
       >
     </el-input>