如果我有一个JavaScript对象,如:
var list = {
"you": 100,
"me": 75,
"foo": 116,
"bar": 15
};
是否有一种方法可以根据值对属性进行排序?最后得到
list = {
"bar": 15,
"me": 75,
"you": 100,
"foo": 116
};
如果我有一个JavaScript对象,如:
var list = {
"you": 100,
"me": 75,
"foo": 116,
"bar": 15
};
是否有一种方法可以根据值对属性进行排序?最后得到
list = {
"bar": 15,
"me": 75,
"you": 100,
"foo": 116
};
当前回答
按值排序对象属性
Const obj ={你:100,我:75,foo: 116, bar: 15}; const keysSorted = Object.keys(obj)。排序((a, b) => obj[a] - obj[b]); Const result = {}; keysSorted。forEach(key => {result[key] = obj[key];}); 文档。write('Result: ' + JSON.stringify(Result));
期望的输出:
{"bar":15,"me":75,"you":100,"foo":116}
引用:
按值排序对象属性 将数组转换为对象
其他回答
使用query-js你可以这样做
list.keys().select(function(k){
return {
key: k,
value : list[k]
}
}).orderBy(function(e){ return e.value;});
你可以在这里找到一篇关于query-js的介绍性文章
a = { b: 1, p: 8, c: 2, g: 1 }
Object.keys(a)
.sort((c,b) => {
return a[b]-a[c]
})
.reduce((acc, cur) => {
let o = {}
o[cur] = a[cur]
acc.push(o)
return acc
} , [])
输出= [{p: 8}, {c: 2}, {b: 1}, {g: 1}]
var list = {
"you": 100,
"me": 75,
"foo": 116,
"bar": 15
};
function sortAssocObject(list) {
var sortable = [];
for (var key in list) {
sortable.push([key, list[key]]);
}
// [["you",100],["me",75],["foo",116],["bar",15]]
sortable.sort(function(a, b) {
return (a[1] < b[1] ? -1 : (a[1] > b[1] ? 1 : 0));
});
// [["bar",15],["me",75],["you",100],["foo",116]]
var orderedList = {};
for (var idx in sortable) {
orderedList[sortable[idx][0]] = sortable[idx][1];
}
return orderedList;
}
sortAssocObject(list);
// {bar: 15, me: 75, you: 100, foo: 116}
谢谢你,继续回答@Nosredna
现在我们知道对象需要转换为数组,然后对数组排序。这对于按字符串排序数组(或转换对象为数组)非常有用:
Object {6: Object, 7: Object, 8: Object, 9: Object, 10: Object, 11: Object, 12: Object}
6: Object
id: "6"
name: "PhD"
obe_service_type_id: "2"
__proto__: Object
7: Object
id: "7"
name: "BVC (BPTC)"
obe_service_type_id: "2"
__proto__: Object
//Sort options
var sortable = [];
for (var vehicle in options)
sortable.push([vehicle, options[vehicle]]);
sortable.sort(function(a, b) {
return a[1].name < b[1].name ? -1 : 1;
});
//sortable => prints
[Array[2], Array[2], Array[2], Array[2], Array[2], Array[2], Array[2]]
0: Array[2]
0: "11"
1: Object
id: "11"
name: "AS/A2"
obe_service_type_id: "2"
__proto__: Object
length: 2
__proto__: Array[0]
1: Array[2]
0: "7"
1: Object
id: "7"
name: "BVC (BPTC)"
obe_service_type_id: "2"
__proto__: Object
length: 2
<pre>
function sortObjectByVal(obj){
var keysSorted = Object.keys(obj).sort(function(a,b){return obj[b]-obj[a]});
var newObj = {};
for(var x of keysSorted){
newObj[x] = obj[x];
}
return newObj;
}
var list = {"you": 100, "me": 75, "foo": 116, "bar": 15};
console.log(sortObjectByVal(list));
</pre>