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？
当前回答
我参加聚会有点晚了，但下面是我整理的逻辑。
function getSortedData(data, prop, isAsc) {
return data.sort((a, b) => {
return (a[prop] < b[prop] ? -1 : 1) * (isAsc ? 1 : -1)
});
}
其他回答
用于字符串排序，以防有人需要，
常量数据Arr={“您好”：[{“id”：114，“关键字”：“zzzzzz”，“地区”：“斯里兰卡”，“supportGroup”：“administrators”，“category”：“类别2”}, {“id”：115，“关键字”：“aaaaa”，“地区”：“日本”，“supportGroup”：“开发者”，“category”：“类别2”}]};const sortArray=dataArr['hello']；console.log（sortArray.sort（（a，b）=>{如果（a.region<b.region）返回-1；如果（a.region>b.region）返回1；返回0；}));
您可以将JavaScript排序方法与回调函数一起使用：
function compareASC(homeA, homeB)
{
return parseFloat(homeA.price) - parseFloat(homeB.price);
}
function compareDESC(homeA, homeB)
{
return parseFloat(homeB.price) - parseFloat(homeA.price);
}
// Sort ASC
homes.sort(compareASC);
// Sort DESC
homes.sort(compareDESC);
function sortByProperty(home){
return home.price
}
sortByProperty按价格获取属性。将来，您可能希望按“zip”或字符串值“city”对数据进行排序。您需要在上面的函数中更改home.price
// if you want descending order change this to false
// if you are on react.js you could set this with useState
const ascending=true
// Initially "b" is the index-1 item and "a" is the index-0 item
homes.sort((a,b)=>{
//initially 0th index
const first=sortByProperty(a)
// initially 1st index
const second=sortByProperty(b)
// if you multiply by -1 it will be descending
const sortOrder=ascending ? 1 : -1
if (typeof first==="number"){
return (first-second) * sortOrder
} else {
// this will compare the string values
return (first.localeCompare(second)) * sortOrder
}
})
有了ECMAScript 6，StoBor的答案可以更加简洁：
homes.sort((a, b) => a.price - b.price)
我还处理了一些评级和多个字段排序：
arr = [
{type:'C', note:834},
{type:'D', note:732},
{type:'D', note:008},
{type:'F', note:474},
{type:'P', note:283},
{type:'P', note:165},
{type:'X', note:173},
{type:'Z', note:239},
];
arr.sort(function(a,b){
var _a = ((a.type==='C')?'0':(a.type==='P')?'1':'2');
_a += (a.type.localeCompare(b.type)===-1)?'0':'1';
_a += (a.note>b.note)?'1':'0';
var _b = ((b.type==='C')?'0':(b.type==='P')?'1':'2');
_b += (b.type.localeCompare(a.type)===-1)?'0':'1';
_b += (b.note>a.note)?'1':'0';
return parseInt(_a) - parseInt(_b);
});
后果
[
{"type":"C","note":834},
{"type":"P","note":165},
{"type":"P","note":283},
{"type":"D","note":8},
{"type":"D","note":732},
{"type":"F","note":474},
{"type":"X","note":173},
{"type":"Z","note":239}
]
