2024年07月24日 建站教程
let data = [ {id: 1, text: '清北', parentId: 0}, {id: 2, text: '浙京', parentId: 2}, {id: 3, text: '浙京', parentId: 1}, {id: 4, text: '浙京', parentId: 3}, {id: 5, text: '清北', parentId: 1}, {id: 6, text: '浙京', parentId: 0}, ]; data.forEach(ele => { let parentId = ele.parentId; if (parentId === 0) { //parentId===0是根路径 } else { //其它的扔到根路径child下面数组中. data.forEach(d => { if (d.id === parentId) { let childArray = d.child; if (!childArray) { childArray = [] } childArray.push(ele); d.child = childArray; } }) } }); //去除重复元素 data = data.filter(ele => ele.parentId === 0);
console.log('输出结果: ', data); //输出结果 //0: {id: 1, text: '清北', parentId: 0, child: Array(2)} //1: {id: 6, text: '浙京', parentId: 0}
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