javascript - How can I access multi dimensional JSON data? -

i'm trying access value of fields of json file.

console.log( objects.assignments.header.report_type );

i want print out homework

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javascript

$.ajax({        url:  "/bim/rest/report/assignment",       type: "post",       datatype : "json",       data: {         assessmentid: "206a9246-ce83-412b-b8ad-6b3e28be44e3",         classroomid:  "722bfadb-9774-4d59-9a47-89ac9a7a8f9a"       },        success: function( objects ) {          console.log( objects.assignments.header.report_type );          // result : uncaught typeerror: cannot read property 'report_type' of undefined 

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json data - ajax call

{   "assignments": [     {       "assignmentid": "summary",       "name": "summary",       "header": {         "section_num": "9.4",         "report_type": "homework",         "problem_set": "summary",         "start_time": null,         "student_am": 0,         "student_total": 5,         "due_time": null,         "submit_am": 0,         "submit_total": 0,         "avg_score": "0.0",         "danger": 0,         "danger_list": "",         "warning": 0,         "warning_list": "",         "success": 0,         "success_list": ""       }     }   ] } 

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how access data ?

any hints / helps on mean lot me.

thanks in advance.

assignments array, need access specific element.

console.log(objects.assignments[0].header.report_type);                                ^^^