<el-input v-model="num" placeholder="请输入数字" @input="inputNumber(num)" maxLength='9'></el-input>
inputNumber(value) {
this.num= value.replace(/[^\d]/g, "");
}
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<el-input v-model="num" placeholder="请输入数字" @input="inputNumber(num)" maxLength='9'></el-input>
inputNumber(value) {
this.num= value.replace(/[^\d]/g, "");
}