vue的input输入框只能输入数字

<el-form-item label="分数：" :required="true"><el-input placeholder="请设置评分数" style="width: 90%" v-model="scoringItemsForm.grade"></el-input></el-form-item>

<script>// 这里过滤的是除了数字的其他字符function filterInput(val) {return val.replace(/[^\d]/g, "");}export default {data(){return:{scoringItemsForm:{grade:''}}},watch: {"scoringItemsForm.grade"(val) {this.scoringItemsForm.grade = filterInput(val);},},},</script>