Jquery 如何从json多维数组访问数据

我有这样一个结果

[
       {"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"}
                       ]}
               ]}
       ]}

    ]

---

从这个json输出中，我如何使用$.each函数访问lessonId的值

是的，它正在工作。但是，它如何通过调用第0个元素来获取值呢？当然开始了。对于第一个this.courseStarted[0].courseName，它应该像这样递增；对于第二个this.courseStarted[1].courseName，它应该像那样递增。我让它工作了,但我没有弄清楚工作流程,我的意思是我没有弄清楚它是如何工作的。你能告诉我这背后的原理吗。@user359187如果你看一下对象中的

courseStarted

，它总是一个正好有一个值的数组。该值是具有courseName的对象。在您发布的代码中，您有两个课程名称<代码>数据[0]。courseStarted[0]。courseName和

数据[1]。courseStarted[0]。courseName

。

$。每个

处理通过数据数组的迭代。现在这有意义吗？

$.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);
    });

});