Javascript 如何使用检索到的数据选中复选框

我编写了一个脚本，将

json

数据传递给变量，并在传递数据之后。在内部html页面中，我收集了所有数据，如

chapterid

，

questionid

…等

jQuery代码： HTML代码： 为了获取

fndOptionId

值，我编写如下语句：

var fndOptionId = $(this).attr('class').split('_')[1];

这是两个问题中的

选项1

---

如何根据json数据自动选择

复选框。
您可以简化javascript功能：

   $('div[id^="questionsNo_"]').ready(function () {
    var assessmentDataObj = [{"id":"1","user_id":"1","book_id":"64","chapter_id":"1","question_type":"","question_id":"1","option_id":"1","mark":"0","notes":"","matchOption":"","dragValues":"","added_time":"1469595022"},{"id":"2","user_id":"1","book_id":"64","chapter_id":"1","question_type":"","question_id":"2","option_id":"2","mark":"0","notes":"","matchOption":"","dragValues":"","added_time":"1469622667"}]; 
 $.each(assessmentDataObj, function (key, value) 
    {
    $("#questionsNo_1_" + assessmentDataObj[key].question_id).find('p input.option_' + assessmentDataObj[key].option_id).attr('checked', 'checked');         
    });
    });

你的js很漂亮：但它检查了每个问题中的所有两个选项
if (
  assessmentDataObj[key].chapter_id == fndChapterId & amp; & amp;   assessmentDataObj[key].question_id == fndQuestionId & amp; $amp; assessmentDataObj[key].option_id == fndOptionId) {

var fndOptionId = $(this).attr('class').split('_')[1];

   $('div[id^="questionsNo_"]').ready(function () {
    var assessmentDataObj = [{"id":"1","user_id":"1","book_id":"64","chapter_id":"1","question_type":"","question_id":"1","option_id":"1","mark":"0","notes":"","matchOption":"","dragValues":"","added_time":"1469595022"},{"id":"2","user_id":"1","book_id":"64","chapter_id":"1","question_type":"","question_id":"2","option_id":"2","mark":"0","notes":"","matchOption":"","dragValues":"","added_time":"1469622667"}]; 
 $.each(assessmentDataObj, function (key, value) 
    {
    $("#questionsNo_1_" + assessmentDataObj[key].question_id).find('p input.option_' + assessmentDataObj[key].option_id).attr('checked', 'checked');         
    });
    });