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
这是获取排序对象和返回排序对象的方法
let sortedObject = {}
sortedObject = Object.keys(yourObject).sort((a, b) => {
return yourObject[a] - yourObject[b]
}).reduce((prev, curr, i) => {
prev[i] = yourObject[curr]
return prev
}, {});
您可以根据您的需求自定义排序功能
其他回答
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}
另一种解决方法:-
var res = [{"s1":5},{"s2":3},{"s3":8}].sort(function(obj1,obj2){
var prop1;
var prop2;
for(prop in obj1) {
prop1=prop;
}
for(prop in obj2) {
prop2=prop;
}
//the above two for loops will iterate only once because we use it to find the key
return obj1[prop1]-obj2[prop2];
});
//res将有结果数组
const arrayOfObjects = [
{name: 'test'},
{name: 'test2'}
]
const order = ['test2', 'test']
const setOrder = (arrayOfObjects, order) =>
arrayOfObjects.sort((a, b) => {
if (order.findIndex((i) => i === a.name) < order.findIndex((i) => i === b.name)) {
return -1;
}
if (order.findIndex((i) => i === a.name) > order.findIndex((i) => i === b.name)) {
return 1;
}
return 0;
});
我用sort的解决方案:
let list = {
"you": 100,
"me": 75,
"foo": 116,
"bar": 15
};
let sorted = Object.entries(list).sort((a,b) => a[1] - b[1]);
for(let element of sorted) {
console.log(element[0]+ ": " + element[1]);
}
<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>