我使用AJAX获取了以下对象,并将它们存储在数组中:
var homes = [
{
"h_id": "3",
"city": "Dallas",
"state": "TX",
"zip": "75201",
"price": "162500"
}, {
"h_id": "4",
"city": "Bevery Hills",
"state": "CA",
"zip": "90210",
"price": "319250"
}, {
"h_id": "5",
"city": "New York",
"state": "NY",
"zip": "00010",
"price": "962500"
}
];
如何创建一个函数,仅使用JavaScript按price属性按升序或降序对对象进行排序?
如果您有符合ES6标准的浏览器,您可以使用:
箭头功能Number()函数sort()函数
升序和降序之间的区别是比较函数返回的值的符号:
var ascending = homes.sort((a, b) => Number(a.price) - Number(b.price));
var descending = homes.sort((a, b) => Number(b.price) - Number(a.price));
下面是一个工作代码片段:
var家=[{“h_id”:“3”,“城市”:“达拉斯”,“状态”:“TX”,“zip”:“75201”,“价格”:“162500”}, {“h_id”:“4”,“城市”:“贝弗利山”,“状态”:“CA”,“zip”:“90210”,“price”:“319250”}, {“h_id”:“5”,“城市”:“纽约”,“州”:“NY”,“zip”:“00010”,“价格”:“962500”}];homes.sort((a,b)=>编号(a.price)-编号(b.price));console.log(“升序”,homes);homes.sort((a,b)=>编号(b.price)-编号(a.price));console.log(“下降”,homes);
仅对于元素值的普通数组:
function sortArrayOfElements(arrayToSort) {
function compareElements(a, b) {
if (a < b)
return -1;
if (a > b)
return 1;
return 0;
}
return arrayToSort.sort(compareElements);
}
e.g. 1:
var array1 = [1,2,545,676,64,2,24]
output : [1, 2, 2, 24, 64, 545, 676]
var array2 = ["v","a",545,676,64,2,"24"]
output: ["a", "v", 2, "24", 64, 545, 676]
对于对象数组:
function sortArrayOfObjects(arrayToSort, key) {
function compareObjects(a, b) {
if (a[key] < b[key])
return -1;
if (a[key] > b[key])
return 1;
return 0;
}
return arrayToSort.sort(compareObjects);
}
e.g. 1: var array1= [{"name": "User4", "value": 4},{"name": "User3", "value": 3},{"name": "User2", "value": 2}]
output : [{"name": "User2", "value": 2},{"name": "User3", "value": 3},{"name": "User4", "value": 4}]