Vue Element 限制只能输入数字

<el-form-item v-if="isVndorNbr" label="供应商：">

              <el-input

                v-model="dataForm.vendorNbr"

                placeholder="请输入数字"

                oninput="value=value.replace(/[^\d]/g,'')"

                maxlength="9"

              />

            </el-form-item>