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}
]
其他回答
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}
]
要对其进行排序，需要创建一个接受两个参数的比较器函数。然后用比较器函数调用排序函数，如下所示：
// a and b are object elements of your array
function mycomparator(a,b) {
return parseInt(a.price, 10) - parseInt(b.price, 10);
}
homes.sort(mycomparator);
如果要按升序排序，请切换负号两边的表达式。
可以使用string1.localeCompare（string2）进行字符串比较
this.myArray.sort((a,b) => {
return a.stringProp.localeCompare(b.stringProp);
});
注意localCompare不区分大小写
你需要两个功能
function desc(a, b) {
return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
}
function asc(a, b) {
return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
}
然后可以将其应用于任何对象属性：
data.sort((a, b) => desc(parseFloat(a.price), parseFloat(b.price)));
让数据=[{label:“一”，值：10}，{label:“two”，值：5}，｛label:“three”，值：1｝，];//排序函数函数desc（a，b）{返回b<a-1:b>a？1:b>=a？0:NaN；}函数asc（a，b）{返回a<b-1:a>b？1:a>=b？0:NaN；}//描述（DESC）data.sort（（a，b）=>desc（a.value，b.value））；document.body.insert相邻HTML('之前'，'<strong>DESC排序</strong><pre>'+JSON.stringify（数据）+'</pre>');//美国科学院data.sort（（a，b）=>asc（a.value，b.value））；document.body.insert相邻HTML('之前'，'<strong>ASCending sorted</strong><pre>'+JSON.stringify（数据）+'</pre>');
如果使用Undercore.js，请尝试sortBy：
// price is of an integer type
_.sortBy(homes, "price");
// price is of a string type
_.sortBy(homes, function(home) {return parseInt(home.price);});
