vant-weapp/dist/search/index.js

import { VantComponent } from '../common/component';
VantComponent({
    field: true,
    classes: ['cancel-class'],
    props: {
        focus: Boolean,
        disabled: Boolean,
        readonly: Boolean,
        showAction: Boolean,
        useActionSlot: Boolean,
        placeholder: String,
        background: {
            type: String,
            value: '#f2f2f2'
        },
        maxlength: {
            type: Number,
            value: -1
        }
    },
    methods: {
        onChange(event) {
            this.setData({ value: event.detail });
            this.$emit('change', event.detail);
        },
        onCancel() {
            this.setData({ value: '' });
            this.$emit('cancel');
            this.$emit('change', '');
        },
        onSearch() {
            this.$emit('search', this.data.value);
        },
        onFocus() {
            this.$emit('focus');
        },
        onBlur() {
            this.$emit('blur');
        }
    }
});