Question

可能重复：
How to sort an array of objects?

鉴于以下学生的记录数组 - 您如何根据年龄使用Javascript按升序对其进行排序？

students = [{
name: "timothy",
age: "9"},
{
name: "claire",
age: "12"},
{
name: "michael",
age: "20"}]

Answer 1

要按年龄按升序排序，请使用Array.sort和自定义比较器功能：

students.sort(function (a, b)
{
    return a.age - b.age;
});

// students will be 
[{name: "timothy", age: "9"},
 {name: "claire", age: "12"},
 {name: "michael", age: "20"}]

Answer 2

按年龄：

students = students.sort(function(a, b) {
  return parseFloat(a.age) - parseFloat(b.age);
});

Answer 3

student.sort(function(a,b){

 if (a.name > b.name)
     return -1;
 return 1;

});

Answer 4

阅读这个例子：

var marks = new Array(10,12,11,20,2);
        for(var i=0;i<marks .length;i++) //Hold the first element
    {
        for(var j=i+1;j<marks.length;j++) //Hold the next element from the first element
        {
            if(Number(marks[i]) > Number(marks[j])) //comparing first and next element
            {
                tempValue = marks[j];   
                marks[j] = marks[i];
                marks[i] = tempValue;
            }
        }
    }
        document.write(marks);

Answer 5

students.sort(function(a,b){
      if (+a.age > +b.age) return 1;
      return -1;
});
// Now the object is ordered by age (min to max)

如果您想知道， + a.age 与数字（a.age）

相同

按升序对记录数组进行排序

5 个答案: