js 生成对象数组_JS数组父子关系生成对象

爱被打了一巴掌 2023-01-10 13:17 149阅读 0赞

![eddcfa115f81c3b67bb09beffba8fdcc.png][]

JS数组（父子关系）数据如下:

var data = [{
         "id":"1","parentId":"0","name":"主目录"},
    {
         "id":"2","parentId":"1","name":"1级目录：2"},
    {
         "id":"3","parentId":"1","name":"1级目录：3"},
    {
         "id":"4","parentId":"2","name":"2级目录：4"},
    {
         "id":"5","parentId":"3","name":"2级目录：5"},
    {
         "id":"6","parentId":"3","name":"2级目录：6"},
    {
         "id":"7","parentId":"6","name":"3级目录：7"},
    {
         "id":"8","parentId":"7","name":"4级目录：8"},
    {
         "id":"9","parentId":"5","name":"3级目录：9"},
    {
         "id":"10","parentId":"9","name":"4级目录：10"}
    ];

JS数组 ID关系图，如下：

|-0
      |-2
        |-4
    
      |-3
        |-5
          |-9
            |-10
        |-6
          |-7
            |-8

JS 转换代码：

**使用方法：**

var jsonArray = getJsonTree(data,'0');
    console.log(jsonArray);

**这是输出结果.**

[{
    	"id": "1",
    	"title": "主目录",
    	"nodes": [{
    		"id": "2",
    		"title": "1级目录：2",
    		"nodes": [{
    			"id": "4",
    			"title": "2级目录：4",
    			"nodes": []
    		}]
    	}, {
    		"id": "3",
    		"title": "1级目录：3",
    		"nodes": [{
    			"id": "5",
    			"title": "2级目录：5",
    			"nodes": [{
    				"id": "9",
    				"title": "3级目录：9",
    				"nodes": [{
    					"id": "10",
    					"title": "4级目录：10",
    					"nodes": []
    				}]
    			}]
    		}, {
    			"id": "6",
    			"title": "2级目录：6",
    			"nodes": [{
    				"id": "7",
    				"title": "3级目录：7",
    				"nodes": [{
    					"id": "8",
    					"title": "4级目录：8",
    					"nodes": []
    				}]
    			}]
    		}]
    	}]
    }]

**<注意：上面的输出中，即使nodes为空数组，也将该属性输出了，如果nodes为空，不进行输出，使用下面代码.>**

下面的代码做了判断，如果数组为空，将不给对象添加nodes属性

输出结果：

[{
    	"id": "1",
    	"title": "主目录",
    	"nodes": [{
    		"id": "2",
    		"title": "1级目录：2",
    		"nodes": [{
    			"id": "4",
    			"title": "2级目录：4"
    		}]
    	}, {
    		"id": "3",
    		"title": "1级目录：3",
    		"nodes": [{
    			"id": "5",
    			"title": "2级目录：5",
    			"nodes": [{
    				"id": "9",
    				"title": "3级目录：9",
    				"nodes": [{
    					"id": "10",
    					"title": "4级目录：10"
    				}]
    			}]
    		}, {
    			"id": "6",
    			"title": "2级目录：6",
    			"nodes": [{
    				"id": "7",
    				"title": "3级目录：7",
    				"nodes": [{
    					"id": "8",
    					"title": "4级目录：8"
    				}]
    			}]
    		}]
    	}]
    }]

[eddcfa115f81c3b67bb09beffba8fdcc.png]: /images/20221119/c306ba650507492da0a782b6321cf488.png