| 1234567891011121314151617181920212223 | import { VantComponent } from '../common/component';import { useChildren } from '../common/relation';VantComponent({    relation: useChildren('col', function (target) {        const { gutter } = this.data;        if (gutter) {            target.setData({ gutter });        }    }),    props: {        gutter: {            type: Number,            observer: 'setGutter',        },    },    methods: {        setGutter() {            this.children.forEach((col) => {                col.setData(this.data);            });        },    },});
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