javascript - 遍历 JSON 树并操作其数据/结构

Question

我正在尝试创建一个可以遍历 JSON 树并更改其数据/结构的函数。我设法让它遍历到每个节点并读取数据，但坚持更改其数据/结构部分。

function jsonTraverser(tree){
    $.each(tree, function(index, val){
        if(val.tag == 'button'){
            delete val[index];
        }
        if(val.children){
            jsonTraverser(val.children);
        }
    })
}
jsonTraverser(json_obj);

从上面的代码中，它应该删除标签等于按钮的 JSON 节点。虽然它似乎有效，但它不会删除节点，而更改其标签却可以正常工作。您有解决这个问题的办法吗？

PS:如果您需要 JSON 树的示例，这里就是。

[
  {"tag":"div","id":"0","class":"sgph","children":[
    {"tag":"div","data-scoretype":"","class":"sgi","id":"1","children":[
      {"tag":"button","data-btnrole":"satis_group","class":"up","html":"ขึ้น"},
      {"tag":"button","data-btnrole":"satis_group","class":"down","html":"ลง"},
      {"tag":"button","data-btnrole":"satis_group","class":"edit","html":"เปลี่ยนกลุ่ม"},
      {"tag":"button","data-btnrole":"satis_group","class":"del","html":"ลบกลุ่ม"}
    ]},
    {"tag":"div","class":"scph","children":[
      {"tag":"button","data-btnrole":"score_type","class":"add","html":"เกณฑ์การให้คะแนน"}
    ]},
    {"tag":"div","class":"stph","children":[
      {"tag":"div","class":"sti","id":"3","children":[
          {"tag":"button","data-btnrole":"satis_topics","class":"up","html":"ขึ้น"},
          {"tag":"button","data-btnrole":"satis_topics","class":"down","html":"ลง"},
          {"tag":"button","data-btnrole":"satis_topics","class":"edit","html":"เปลี่ยนหัวข้อ"},
          {"tag":"button","data-btnrole":"satis_topics","class":"del","html":"ลบหัวข้อ"}
        ]},
      {"tag":"button","data-btnrole":"satis_topics","class":"add","html":"เพิ่มหัวข้อ"}
    ]}
  ]},
  {"tag":"div","id":"1","class":"sgph","children":[
    {"tag":"button","data-btnrole":"satis_group","class":"add","html":"เพิ่มกลุ่ม"}
  ]}
]  

Answer 1

您拼写错误了一些变量名称。例如，“v”应该是“val”。jsonTraverse 还应该从树中删除，而不是从 val 中删除，因为树保存着子级列表。

function jsonTraverser(tree){
    $.each(tree, function(index, val){
        if(val.tag == 'button'){
            delete tree[index];
        }
        if(val.children){
            jsonTraverser(val.children);
        }
    })
}

请注意，您必须处理根本身具有标签“button”的情况。