\{ "name": "第一层",
index:1, "children":[
{ "name":"第二层",
index:2,
},{ "name":"第二层",
index:2, "children":[
{ "name":"第三层",
index:3,
},{ "name":"第三层",
index:3,
},
]
}
]
}想在这个树状图中添加他们每一层的index,
2 回答
慕村9548890
TA贡献1884条经验 获得超4个赞
最终写法。
function fun(arry){ for(let i in arry){
let menu = arry[i]; if(!menu['num']){
menu['num'] = 1;
} if(menu['children'].length && menu['children']){ for(let j in menu['children']){
menu['children'][j]['num'] = arry[i]['num'] + 1; fun(menu['children'])
}
}
}
}
慕尼黑8549860
TA贡献1818条经验 获得超11个赞
var ary = { "name": "第一层", index:1, "children":[
{ "name":"第二层", index:2,
},{ "name":"第二层", index:2, "children":[
{ "name":"第三层", index:3,
},{ "name":"第三层", index:3,
},
]
}
]
}function level(obj) { if (!obj.level) {
obj.level = 1
} if (!obj.children || !obj.children.length) { return
}
obj.children.forEach(function(el) {
el.level = obj.level + 1
level(el)
})
}
level(ary)console.log(ary)var ary = [{ "name": "第一层", index:1, "children":[
{ "name":"第二层", index:2,
},{ "name":"第二层", index:2, "children":[
{ "name":"第三层", index:3,
},{ "name":"第三层", index:3,
},
]
}
]
},
{ "name": "第一层", index:1, "children":[
{ "name":"第二层", index:2,
},{ "name":"第二层", index:2, "children":[
{ "name":"第三层", index:3,
},{ "name":"第三层", index:3,
},
]
}
]
}
]function level(ary) {
ary.forEach(function(el) { if (!el.level) {
el.level = 1
} if (!el.children || !el.children.length) { return
}
el.children.forEach(function(item) {
item.level = el.level + 1
})
level(el.children)
})
}
level(ary)console.log(ary)一个对象,一个数组
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