Javascript JSON JQUERY未捕获类型错误：无法读取属性'；长度'；未定义的

我是编程新手。我试图使用JQuery将JSON数据显示到HTML文件中。在我的控制台中，我收到一个

未捕获类型错误：无法读取undefinedresumeBuilder.js:147 education.displayresumeBuilder.js:178（匿名函数）

的属性“length”，我不确定原因。如果您能说明这个错误，我们将不胜感激

这是我的resumeBuilder.js文件：

var eduction = {
    "schools": [
        {
            "name": "McGill University",
            "location": "Montreal, Quebec, Canada",
            "degree": "Master of Arts",
            "major": "Second Language Education",
            "url": "mcgill.ca"
        }
    ],
    "onlineCourses": [
        {
            "title": "Full Stack Web Development Course",
            "school": "Bloc.io",
            "url": "bloc.io"
        }
    ]
};

education.display = function() {
    if(education.schools.length > 0 || education.onlineCourses.length > 0) {
        for(i in education.schools) {
            $("#education").append(HTMLschoolStart);

            var formattedSchoolName = HTMLschoolName.replace("%data%",      education.schools[i].name).replace("#", education.schools[i].url);
            var formattedSchoolDegree = HTMLschoolDegree.replace("%data%",     education.schools[i].degree);
            var formattedSchoolLocation = HTMLschoolLocation.replace("%data%", education.schools[i].location);
            var formattedSchoolMajor = HTMLschoolMajor.replace("%data%", education.schools[i].major);

            $(".education-entry:last").append(formattedSchoolName + formattedSchoolDegree);
            $(".education-entry:last").append(formattedSchoolLocation);
            $(".education-entry:last").append(formattedSchoolMajor);
        }

        if(education.onlineCourses.length > 0) {
            $("#education").append(HTMLonlineClasses);
            for(i in education.onlineCourses) {
                $("#education").append(HTMLschoolStart);
                var formattedOnlineTitle = HTMLonlineTitle.replace("%data%", education.onlineCourses[i].title).replace("#", education.onlineCourses[i].url);
                var formattedOnlineSchool = HTMLonlineSchool.replace("%data%", education.onlineCourses[i].school);
                var formattedOnlineURL = HTMLonlineURL.replace("%data%", education.onlineCourses[i].url).replace("#", education.onlineCourses[i].url);

                $(".education-entry:last").append(formattedOnlineTitle);
                $(".education-entry:last").append(formattedOnlineSchool);
                $(".education-entry:last").append(formattedOnlineURL);
            }
        }
    }
}

education.display();

var HTMLschoolStart = '<div class="education-entry"></div>';
var HTMLschoolName = '<a href="#">%data%';
var HTMLschoolDegree = ' -- %data%</a>';
var HTMLschoolLocation = '<div class="location-text">%data%</div>';
var HTMLschoolMajor = '<em><br>Major: %data%</em>';

var HTMLonlineClasses = '<h3>Online Classes</h3>';
var HTMLonlineTitle = '<a href="#">%data%';
var HTMLonlineSchool = ' - %data%</a>';
var HTMLonlineURL = '<br><a href="#">%data%</a>';

这是我的helper.js文件：

var eduction = {
    "schools": [
        {
            "name": "McGill University",
            "location": "Montreal, Quebec, Canada",
            "degree": "Master of Arts",
            "major": "Second Language Education",
            "url": "mcgill.ca"
        }
    ],
    "onlineCourses": [
        {
            "title": "Full Stack Web Development Course",
            "school": "Bloc.io",
            "url": "bloc.io"
        }
    ]
};

education.display = function() {
    if(education.schools.length > 0 || education.onlineCourses.length > 0) {
        for(i in education.schools) {
            $("#education").append(HTMLschoolStart);

            var formattedSchoolName = HTMLschoolName.replace("%data%",      education.schools[i].name).replace("#", education.schools[i].url);
            var formattedSchoolDegree = HTMLschoolDegree.replace("%data%",     education.schools[i].degree);
            var formattedSchoolLocation = HTMLschoolLocation.replace("%data%", education.schools[i].location);
            var formattedSchoolMajor = HTMLschoolMajor.replace("%data%", education.schools[i].major);

            $(".education-entry:last").append(formattedSchoolName + formattedSchoolDegree);
            $(".education-entry:last").append(formattedSchoolLocation);
            $(".education-entry:last").append(formattedSchoolMajor);
        }

        if(education.onlineCourses.length > 0) {
            $("#education").append(HTMLonlineClasses);
            for(i in education.onlineCourses) {
                $("#education").append(HTMLschoolStart);
                var formattedOnlineTitle = HTMLonlineTitle.replace("%data%", education.onlineCourses[i].title).replace("#", education.onlineCourses[i].url);
                var formattedOnlineSchool = HTMLonlineSchool.replace("%data%", education.onlineCourses[i].school);
                var formattedOnlineURL = HTMLonlineURL.replace("%data%", education.onlineCourses[i].url).replace("#", education.onlineCourses[i].url);

                $(".education-entry:last").append(formattedOnlineTitle);
                $(".education-entry:last").append(formattedOnlineSchool);
                $(".education-entry:last").append(formattedOnlineURL);
            }
        }
    }
}

education.display();

var HTMLschoolStart = '<div class="education-entry"></div>';
var HTMLschoolName = '<a href="#">%data%';
var HTMLschoolDegree = ' -- %data%</a>';
var HTMLschoolLocation = '<div class="location-text">%data%</div>';
var HTMLschoolMajor = '<em><br>Major: %data%</em>';

var HTMLonlineClasses = '<h3>Online Classes</h3>';
var HTMLonlineTitle = '<a href="#">%data%';
var HTMLonlineSchool = ' - %data%</a>';
var HTMLonlineURL = '<br><a href="#">%data%</a>';

var HTMLschoolStart=''；
var HTMLschoolName=''；
var HTMLschoolLocation='%data%'；
var HTMLschoolMajor='
主要：%data%'；
var HTMLonlineClasses=‘在线类’；
var HTMLonlineTitle=''；
var HTMLonlineURL='
'；

您的第一个JSON对象似乎有输入错误

var导出={

---

应该有一个“a”。

您的第一个JSON对象似乎有一个输入错误

var导出={

---

应该有一个“a”。

您的第一个JSON对象似乎有一个输入错误

var导出={

---

应该有一个“a”。

您的第一个JSON对象似乎有一个输入错误

var导出={

---

应该有一个“a”。

你错漏了教育-教育行1

你错漏了教育-教育行1

你错漏了教育-教育行1

你错漏了教育-教育行1

你的

var education={

var education={

您可能还需要更改：

var HTMLonlineClasses = '<h3>Online Classes</h3>';

var HTMLonlineClasses='在线类'；

以匹配您在javascript中比较的变量

education.onlineCourses

var HTMLonlineCourses = '<h3>Online Courses</h3>';

education.online课程
var HTMLonlineCourses=‘在线课程’；

---

因此，将来更容易找到并更新该变量的引用

您的

var教育={

=>

var教育={

您可能还需要更改：

var HTMLonlineClasses = '<h3>Online Classes</h3>';

var HTMLonlineClasses='在线类'；

以匹配您在javascript中比较的变量

education.onlineCourses

var HTMLonlineCourses = '<h3>Online Courses</h3>';

education.online课程
var HTMLonlineCourses=‘在线课程’；

---

因此，将来更容易找到并更新该变量的引用

您的

var教育={

=>

var教育={

您可能还需要更改：

var HTMLonlineClasses = '<h3>Online Classes</h3>';

var HTMLonlineClasses='在线类'；

以匹配您在javascript中比较的变量

education.onlineCourses

var HTMLonlineCourses = '<h3>Online Courses</h3>';

education.online课程
var HTMLonlineCourses=‘在线课程’；

---

因此，将来更容易找到并更新该变量的引用

您的

var教育={

=>

var教育={

您可能还需要更改：

var HTMLonlineClasses = '<h3>Online Classes</h3>';

var HTMLonlineClasses='在线类'；

以匹配您在javascript中比较的变量

education.onlineCourses

var HTMLonlineCourses = '<h3>Online Courses</h3>';

education.online课程
var HTMLonlineCourses=‘在线课程’；

---

因此，将来更容易找到和更新对该变量的引用

你能告诉我们这段代码中哪一行是

：178

？你能告诉我们这段代码中哪一行是

：178

？你能告诉我们这段代码中哪一行是

：178

？