VUE限制允許輸入數字的方法

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<el-col :span="8">                       <el-form-item label="税率：" prop="contactTaxRate">                         <el-input v-model="form.contactTaxRate" :disabled="true"                                   oninput="value=value.replace(/[^\d]/g,'')"                                   placeholder="请输入税率" clearable>                           <i slot="suffix" class="metre">%</i>                         </el-input>                       </el-form-item>                     </el-col>