按对象属性对对象的javascript数组进行排序
嘿,我有一个对象数组,我需要根据每个对象的特定属性对它们进行排序(DESC或ASC) 这是数据按对象属性对对象的javascript数组进行排序,javascript,arrays,sorting,object,Javascript,Arrays,Sorting,Object,嘿,我有一个对象数组,我需要根据每个对象的特定属性对它们进行排序(DESC或ASC) 这是数据 obj1 = new Object; obj1.date = 1307010000; obj2 = new Object; obj2.date = 1306923600; obj3 = new Object; obj3.date = 1298974800; obj4 = new Object; obj4.date = 1306923600; obj5 = new Object; obj5.da
obj1 = new Object;
obj1.date = 1307010000;
obj2 = new Object;
obj2.date = 1306923600;
obj3 = new Object;
obj3.date = 1298974800;
obj4 = new Object;
obj4.date = 1306923600;
obj5 = new Object;
obj5.date = 1307096400;
data = [obj1,obj2,obj3,obj4,obj5];
现在,我想对数据数组进行排序,以便对象按日期排序
有人能帮我吗?使用数组方法
试试这个:
data.sort(function(a,b){
return a.date - b.date; //to reverse b.date-a.date
});
您可以使用自定义排序功能:
function mySort(a,b) {
return (a.date - b.date);
}
data.sort(mySort);
此解决方案适用于任何类型的数据:
sort_array_by = function(field, reverse, pr){
reverse = (reverse) ? -1 : 1;
return function(a,b){
a = a[field];
b = b[field];
if (typeof(pr) != 'undefined'){
a = pr(a);
b = pr(b);
}
if (a<b) return reverse * -1;
if (a>b) return reverse * 1;
return 0;
}
}
另一个例子是,您可以按“integer”类型的属性对其进行排序:
这是一个我如何使用升序排序对象数组的示例,这里“数组”是对象数组。复制粘贴到脚本标记中并理解如何通过控制台工作
function OBJECT(){
this.PROPERTY1 =Math.floor(Math.random()*10+1) ;
}
OBJECT.prototype.getPROPERTY1=function (){
return(this.PROPERTY1);
}
OBJECT.prototype.setPROPERTY1=function (PROPERTY){
this.PROPERTY1=PROPERTY;
}
var array= new Array();
console.log("unsorted object")
for(var a=0;a<10;a++)
{
array.push(new OBJECT());
console.log(array[a].getPROPERTY1())
}
function sorting() {
for(var i in array){
array[i].setPROPERTY1((array[i].getPROPERTY1()*1))
//that is just for sorting an integer value escape this line if not an
//integer property
}
var arr=new(Array);
var temp1=new(Array);
for(var i in array){
temp1.push(array[i]);
}
var temporary=new(Array)
for(var i in array)
{
var temp = array[i].getPROPERTY1();
arr.push(temp);
}
arr.sort(function(a,b){return a-b});
//the argument above is very important
console.log(arr)
for(var i in arr){
for(var j in temp1)
if(arr[i]==temp1[j].getPROPERTY1())
break;
temporary.push(temp1[j])
temp1.splice(j,1)//just this statement works for me
}
array.length=0;
for(var i in temporary)
{
array.push(temporary[i])
}
}
sorting();
console.log("sorted object")
for(var a=0;a<10;a++)
{
console.log(array[a].getPROPERTY1())
}
函数对象(){
this.PROPERTY1=Math.floor(Math.random()*10+1);
}
OBJECT.prototype.getPROPERTY1=函数(){
返还(本财产1);
}
OBJECT.prototype.setPROPERTY1=函数(属性){
此.PROPERTY1=属性;
}
var数组=新数组();
log(“未排序的对象”)
对于(var a=0;a我们有一个使用Angular/TypeScript的应用程序,发现使用arrow函数对眼睛来说稍微容易一些。在我们的例子中,下面的代码就是我们的示例:
data.sort((a, b) => a.SortOrder - b.SortOrder);
这不是一个很大的改变,但是当你有很多对象需要排序时,这会帮助你更多
data.sort(sort_array_by('my_int_property', true, function(a){
return parseInt(a);
}));
function OBJECT(){
this.PROPERTY1 =Math.floor(Math.random()*10+1) ;
}
OBJECT.prototype.getPROPERTY1=function (){
return(this.PROPERTY1);
}
OBJECT.prototype.setPROPERTY1=function (PROPERTY){
this.PROPERTY1=PROPERTY;
}
var array= new Array();
console.log("unsorted object")
for(var a=0;a<10;a++)
{
array.push(new OBJECT());
console.log(array[a].getPROPERTY1())
}
function sorting() {
for(var i in array){
array[i].setPROPERTY1((array[i].getPROPERTY1()*1))
//that is just for sorting an integer value escape this line if not an
//integer property
}
var arr=new(Array);
var temp1=new(Array);
for(var i in array){
temp1.push(array[i]);
}
var temporary=new(Array)
for(var i in array)
{
var temp = array[i].getPROPERTY1();
arr.push(temp);
}
arr.sort(function(a,b){return a-b});
//the argument above is very important
console.log(arr)
for(var i in arr){
for(var j in temp1)
if(arr[i]==temp1[j].getPROPERTY1())
break;
temporary.push(temp1[j])
temp1.splice(j,1)//just this statement works for me
}
array.length=0;
for(var i in temporary)
{
array.push(temporary[i])
}
}
sorting();
console.log("sorted object")
for(var a=0;a<10;a++)
{
console.log(array[a].getPROPERTY1())
}
data.sort((a, b) => a.SortOrder - b.SortOrder);