我有一个场景需要遍历树结构的每个子元素并修改/添加属性或属性。每个孩子可以有多个孩子
var treeStructure = {
"id": 1,
"name": "Grand Parent 1",
"children": [
{
"id": 2,
"children": [
{
"id": 3,
"children": [],
"name": "Child 11",
"properties": [
{
"id": 15,
"run": "fast"
},
{
"id": 16,
"walk": "slow"
}
]
},
{
"id": 4,
"type": "Child",
"children": [],
"name": "Child 12",
"properties": [
{
"id": 17,
"run": "slow"
},
{
"id": 18,
"walk": "medium"
}
]
}
],
"name": "Parent 1",
"properties": [
{
"id": 12,
"run": "slow"
},
{
"id": 13,
"walk": "fast"
}
]
},
{
"id": 5,
"children": [
{
"id": 6,
"children": [],
"name": "Child 21"
}
],
"name": "Parent 2",
"properties": [
{
"id": 21,
"run": "medium"
},
{
"id": 22,
"walk": "fast"
}
]
},
{
"id": 7,
"type": "Parent",
"children": [
{
"id": 8,
"children": [],
"name": "Child 31"
}
],
"name": "Parent 3",
"properties": [
{
"id": 31,
"run": "fast"
},
{
"id": 32,
"walk": "slow"
}
]
}
]
}
iterateTree(treeStructure)
iterateTree (node) {
var self = this;
function recursive(obj) {
if (obj.children && obj.children.length) {
obj.children.forEach(function(val,key){
if(val.hasOwnProperty("children")){
self.modifyProperties(val);
recursive(val.children);
}
})
}
}
var expectedOutput = recursive(node);
console.log(expectedOutput)
}
modifyProperties(nodeData) {
let thingProperties = [];
if (nodeData.properties) {
nodeData.properties.map(function (property) {
let tempObj = {
"id": null,
"actionType": "create",
"run" : property.run
};
thingProperties.push(tempObj);
})
}
return {
"id": nodeData.id,
"name": nodeData.name,
"actionType": "create",
}
}
预期的输出：我应该能够将“ id”修改为null并添加 为子元素和父元素创建的“ actionType”，如下所示
{
"id": 1,
"name": "Grand Parent 1",
"actionType": "create",
"children": [
{
"id": 2,
"actionType": "create",
"children": [
{
"id": 3,
"children": [],
"name": "Child 11",
"actionType": "create",
"properties": [
{
"id": null,
"run": "fast",
"actionType": "create",
"read": "slow"
},
{
"id": null,
"actionType": "create",
"walk": "slow",
"write": "fast"
}
]
},
{
"id": 4,
"type": "Child",
"children": [],
"name": "Child 12",
"actionType": "create",
"properties": [
{
"id": null,
"actionType": "create",
"run": "slow"
},
{
"id": null,
"actionType": "create",
"walk": "medium"
}
]
}
],
"name": "Parent 1",
"actionType": "create",
"properties": [
{
"id": null,
"actionType": "create",
"run": "slow"
},
{
"id": null,
"actionType": "create",
"walk": "fast"
}
]
},
{
"id": 5,
"children": [
{
"id": null,
"children": [],
"name": "Child 21"
}
],
"name": "Parent 2",
"actionType": "create",
"properties": [
{
"id": null,
"actionType": "create",
"run": "medium"
},
{
"id": null,
"walk": "fast"
}
]
},
{
"id": 7,
"type": "Parent",
"actionType": "create",
"children": [
{
"id": null,
"actionType": "create",
"children": [],
"name": "Child 31"
}
],
"name": "Parent 3",
"properties": [
{
"id": null,
"actionType": "create",
"run": "fast"
},
{
"id": null,
"actionType": "create",
"walk": "slow"
}
]
}
]
}