How to access the data from json multidimensional array

Question

I have a result json like this

[
       {"courseStarted" :[
               {"CategoryName":"CategoryName","courseName" :"Equipment Course", "seriesName": "Free Education", "courseDetails" :[
                       {"totalLessons" :"2", "NoLessonComplete":"1", "lastviewed":"date", "lessonDetails":[
                               {"lessonId":"342367","quiz":"quizReady"},
                               {"lessonId" :"345345", "quiz":"quizReady"},
                               {"lessonId":"435435","quiz":"quizReady"},
                               {"lessonId":"4234234", "quiz":"quizFailed"},
                               {"lessonId":"4234234","quiz":"quizPassed"}
                       ]}
               ]}
       ]},
       {"courseStarted" :[
               {"CategoryName":"CategoryName","courseName" :"Equipment Course1", "seriesName": "Free Education1", "courseDetails" :[
                       {"totalLessons" :"21", "NoLessonComplete":"11", "lastviewed":"date1", "lessonDetails":[
                               {"lessonId":"3423671","quiz":"quizReady"},
                               {"lessonId" :"3453451", "quiz":"quizReady"},
                               {"lessonId":"4354351","quiz":"quizReady"},
                               {"lessonId":"42342341", "quiz":"quizReady"},
                               {"lessonId":"42342341","quiz":"quizPassed"}
                       ]}
               ]}
       ]}

    ]

from this json output how can i access the value of lessonId using the $.each function.

stackoverflow.com/questions/1569372/jquery-each-json-object

raddykrish
– raddykrish

2012-06-11 19:23:02 +00:00
Commented Jun 11, 2012 at 19:23 — raddykrish
– raddykrish, Commented Jun 11, 2012 at 19:23

Paul · Accepted Answer · 2012-06-11 19:24:00Z

1

$.each(data, function(){

    // Print course name
    console.log(this.courseStarted[0].courseName);

    $.each(this.courseStarted[0].courseDetails[0].lessonDetails, function(){
        // Print lesson id
        console.log(this.lessonId);
    });

});

answered Jun 11, 2012 at 19:24

Paul

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2 Comments

user359187 Over a year ago

Yah it is working. But how could it getting the value by calling 0th element of course started. It should be incremented like for first this.courseStarted[0].courseName and for second this.courseStarted[1].courseName like that. I got it working but i did'nt get the workflow, i mean i did'nt getting how it's working. Can you tell me the theory behind this.

Paul Over a year ago

@user359187 If you look at courseStarted in your object it is always an array with exactly one value. That value is an object which has a courseName. In the code you posted you have two course names. data[0].courseStarted[0].courseName and data[1].courseStarted[0].courseName. The $.each handles the iteration through the data array. Does that make sense now?

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