从JSON填充多维数组

Question

我有以下代码用于使用JSON对象填充全局数组

// global arrays declaration
var sectionL=[1,5,3,7,5,4,3,3,4,4,6,6,3,5,5,1];
var sectionsTitle=new Array(16);
var sectionsContent=new Array(16);
for(var i=0; i<sectionL.length;i++){
  sectionsTitle[i]=new Array(sectionL[i]);
  sectionsContent[i]=new Array(sectionL[i]);
}
var country = new Array(4);
 for(var i=0;i<5;i++){
 country[i]=new Array();  
 country[i][2]=sectionsTitle;// allocate see above 
 country[i][3]=sectionsContent;// allocate see above
//////////////////////////////////////

function getCountries(data){
 $.each(data['countries'], function (k,val){
 country[k][0]=val['title']; // store the title
 country[k][1]=val['id']; // store the id to send to the JSON

  $.getJSON(baseURL+country[k][1]+'&callback=?',function(data ){
  console.log("k=>"+k+"  id=>"+country[k][1]); // just to check if k is passed
   for(var i=0;i<1;i++){
    index=i+1;
      for(var j=0;j<1;j++){
         country[k][2][i][j]=data['result']['sectionTitles']['section'+index+'.'+j+'.title']; // fill the array with the content
      }
   }
 });
});



console.log(country); 

返回

[Array[4], Array[4], Array[4], Array[4], Array[4]]
k=>0  id=>9
k=>1  id=>29
k=>3  id=>31
k=>4  id=>12
k=>2  id=>7

问题：数组的值被覆盖，只显示最后一个。 我怀疑是关闭问题，但我被困住了。任何提示将不胜感激！

Answer 1

最后，我认为问题在于

 country[i][2]=sectionsTitle;// allocate see above 
 country[i][3]=sectionsContent;// allocate see above

你要为所有东西分配相同的对象，所以所有都引用同一个对象，因此问题，一个解决方案可能是......

...

     country[i][2]=getSectionDetails(sectionL);// allocate see above 
     country[i][3]=getSectionDetails(sectionL);// allocate see above
...

function getSectionDetails(data){
    var details=[]
    data.forEach(function(v){ details.push([v]);});
    return details;
}

<强>上：

<击> 我假设问题是$.getJSON与其他人共享变量k，我的解决方案是......

function getCountries(data){
    var url;
     $.each(data['countries'], function (k,val){
         country[k][0]=val['title']; // store the title
         country[k][1]=val['id']; // store the id to send to the JSON
         url = baseURL+country[k][1]+'&callback=?';
         $.getJSON(url, onJSONData.bind({k:k, url: url}));  
    });
}


function onJSONData(data){
    var k = this.k;
    console.log("k=>",k,"  url=>",this.url, 'data =>', data); // just to check if k is passed
    country[k][2][0][0]=data.result.sectionTitles.section1[0].title; // fill the array with the content            
}