根据正则匹配出正确数据，返回值无效？-灵析社区
乘03060920子组件匹配父组件传来的sn值 regeMatch1 (sn) { const pattern = /^[A-Za-z0-9]+$/gi if (sn !== '' && sn !== null) { if (pattern.test(sn)) { console.log('符合') return sn } else { console.log('不符合') return (sn = '') } } } 在mounted中调用 mounted () { console.log(this.titlelist.sn, 11111) this.regeMatch(this.titlelist.sn) }, 绑定数据的标签 {{ titlelist.sn }} 父组件传值 props: { datalist: { type: Array, default: () => [] }, titlelist: { type: Object, default: () => { } } }, 打印输出  已经成功匹配了，但是sn值没有改为空字符
LightSea{{ localSN }}
export default {
props: {
datalist: {
type: Array,
default: () => []
},
titlelist: {
type: Object,
default: () => { }
}
},
data() {
return {
localSN: ''
};
},
methods: {
regeMatch1(sn) {
const pattern = /^[A-Za-z0-9]+$/gi;
if (sn !== '' && sn !== null) {
if (pattern.test(sn)) {
console.log('符合');
return sn;
} else {
console.log('不符合');
return '';
}
}
}
},
mounted() {
console.log(this.titlelist.sn, 11111);
this.localSN = this.regeMatch1(this.titlelist.sn);
}
};