在向新字符串中添加对象时获取“未定义”

Question

我有一系列的对象(学生的名字，成绩等等)我希望在我创建的新的空数组中添加名为"Jody“(例如)的任何对象。但是，当我试图只打印新对象数组的名称时，我会得到undefined。注:我不能使用let，const等。

知道我在这里错过了什么吗？

var student;
var newStudents = [];
var students = [{
    name: 'Odelia',
    track: 'Accounting',
    achievements: '26',
    points: '2260'
}, {
    name: 'Jody',
    track: 'Web Design',
    achievements: '12',
    points: '890'
}, {
    name: 'Yann',
    track: 'Javascript',
    achievements: '10',
    points: '2266'
}, {
    name: 'Max',
    track: 'Marketing',
    achievements: '13',
    points: '1010'
}, {
    name: 'Jody',
    track: 'iOS',
    achievements: '9',
    points: '1002'
}, ]

for (var i = 0; i < students.length; i++) {
    student = students[i];
    if (student.name === 'Jody') {
        newStudents.push(student);
    }
}

console.log(newStudent.name);

输出：

    0: 
      achievements: "12"
      name: "Jody"
      points: "890"
      track: "Web Design"
      __proto__: Object
    1: 
      achievements: "9"
      name: "Jody"
      points: "1002"
      track: "iOS"
      __proto__: Object
      length: 2
      __proto__: Array(0)

    undefined

Answer 1

应该是newStudents而不是newStudent

    console.log(newStudents[0].name);

另外，newStudents是数组。

Answer 2

您正在尝试在循环之外打印名称。再检查一遍。

应该是这样的：

for (var i = 0; i < students.length; i++) {
    student = students[i];
    console.log(newStudent.name);
    if (student.name === 'Jody') {
        newStudents.push(student);
    }
}

Answer 3

试试看，这是我的工作；

var newStudents = [];
var student;
        var students = [
          {name:'Odelia',
           track:'Accounting',
           achievements:'26',
           points: '2260'
          },
          {name:'Jody',
           track:'Web Design',
           achievements:'12',
           points: '890'
          },
          {name:'Yann',
           track:'Javascript',
           achievements:'10',
           points: '2266'
          },
          {name:'Max',
           track:'Marketing',
           achievements:'13',
           points: '1010'
          },
          {name:'Jody',
           track:'iOS',
           achievements:'9',
           points: '1002'
          },
        ]
          for(var i=0;i<students.length;i++){
          student = students[i];
          if(student.name === 'Jody'){
            newStudents.push(student);
          }
        }
    console.log(newStudents[0].name);