fes.js/packages/fes-doc/docs/ui/templates/tree/2.md

layout
templateLayout

<template>
    <Tree :data="data2" :load-data="loadData"></Tree>
</template>
<script>
export default {
    data(){
        return {
            data2: [{
                name: 'parent',
                children: []
            }],
        }
    },
    methods: {
        loadData(item, callback) {
            setTimeout(() => {
                const data = [
                    {
                        name: 'children',
                        children: []
                    },
                    {
                        name: 'children',
                        children: []
                    }
                ];
                callback(data);
            }, 1000);
        },
    }
}
</script>