JavaScript对象数组根据某属性sort升降序排序

2024-10-16 12:47:27

1、自定义一个比较器，其参数为待排序的属性。

2、将带参数的比较器传入sort()。

var data = [
{name: "Bruce", age: 23, id: 16, score: 80},
{name: "Alice", age: 24, id: 12, score: 90},
{name: "David", age: 21, id: 11, score: 70},
{name: "Cindy", age: 22, id: 10, score: 100},
];

data.sort(compareUp("age"));
data.sort(compareDown("age"));

function compareUp(propertyName) { // 升序排序
if ((typeof data[0][propertyName]) != "number") { // 属性值为非数字
return function(object1, object2) {
var value1 = object1[propertyName];
var value2 = object2[propertyName];
return value1.localeCompare(value2);
}
} else {
return function(object1, object2) { // 属性值为数字
var value1 = object1[propertyName];
var value2 = object2[propertyName];
return value1 - value2;
}
}
}

function compareDown(propertyName) { // 降序排序
if ((typeof data[0][propertyName]) != "number") { // 属性值为非数字
return function(object1, object2) {
var value1 = object1[propertyName];
var value2 = object2[propertyName];
return value2.localeCompare(value1);
}
} else {
return function(object1, object2) { // 属性值为数字
var value1 = object1[propertyName];
var value2 = object2[propertyName];
return value2 - value1;
}
}
}

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