javascript - 循环嵌套 JavaScript 对象和数组时出现问题

Question

我需要显示子值，但它像这样显示[对象，对象]

这是我的代码:

var jsonObj = {"department":{
              "Title1":[
                           {"child1":"Green",
                            "child2":"Yellow"
                           },

                           {"child3":"Black",
                            "child4":"White"
                           }
                           ],
              "Title2":[
                           {"child5":"Violet",
                            "child6":"purple"
                           },
                          {"child7":"Pink",
                            "child8":"Orange"
                           }
                           ]
  }
}
$(document).ready(function() {

var  treeList = "";
treeList = "<ul id=\"createTree\">";     
for(var key in jsonObj){
        for(var subKey in jsonObj[key]){
        alert(subKey);
        //for(i=0; i<jsonObj[key].length;i++ ) {
           treeList +=  ("<li>" + subKey + "<ul><li>"+jsonObj[key][subKey]+"</li></ul></li>");
           //var b = $(c).text();
           alert(treeList);
       }
    }
treeList += "</ul>";
$('#tree').append(treeList);
});

Answer 1

正如 Quentin 所说，您需要继续向下钻取，首先深入数组，然后深入数组中包含的对象。下面的代码应该访问 JSON 中保存的所有变量，您可能必须重构它输出的 HTML 才能使其看起来像您想要的那样 -

$(document).ready(function() {

var  treeList = "";
treeList = "<ul id=\"createTree\">";     
for(var key in jsonObj){
        for(var subKey in jsonObj[key]){
        alert(subKey);
        for(i=0; i<jsonObj[key][subKey].length;i++ ) {
           for(var arrayKey in jsonObj[key][subKey][i]){ 
              treeList +=  ("<li>" + subKey + " - " + arrayKey  + " - "+jsonObj[key][subKey][i][arrayKey]+"</li></ul></li>");
           }    
           //var b = $(c).text();
           alert(treeList);
        }   
       }
    }
    treeList += "</ul>";
    $('#tree').append(treeList);
});