javascript - 具有空数组的JSON对象-Javascript

我已经创建了一个用于将表转换为JSON对象的应用程序，该应用程序运行正常，但问题是主体键首次出现一个空数组。
谁能告诉我一些

{"head":["Person Name","Person Name","Points","Price","Tax"],"body":[[],["Jill","Smith","50","150","41"],["Eve","Jackson","94","250","81"],["John","Doe","80","950","412"],["Adam","Johnson","67","750","941"]]}

我的脚本如下

$('#convert-table').click( function() {
    try{
var myTable = [];
var myTr =[];
$('#example-table tr').each(function (i, tr) {
    var myTd =[];
    $('th', tr).each(function(j, th) {
          myTr.push($.trim(th.innerHTML));
    });

    $('td', tr).each(function(j, td) {
        if(td.innerHTML.indexOf("span") != -1){
            var text = $(this).closest('td').find('span').text();
            myTd.push($.trim(text));
        }
        else{
            myTd.push($.trim(td.innerHTML));
        }
    });


    myTable.push(myTd);
});

var headObj ={
    head:myTr,
    body:myTable
};

jsfiddle

最佳答案

尝试使用条件检查数组是否为空

更新：因为对于第一个TR，您只有th而不是td，这就是数组为空的原因。

 例如

if(myTd.length > 0)
      myTable.push(myTd);