If i use integer as a key in javascript object it shorts automatically.
var obj = {"z": 100, "x": 75, "d": 116, "c": 15, "10":123, "9":12}
console.log(obj)
Output:
{9: 12, 10: 123, z: 100, x: 75, d: 116, c: 15}
It is not maintaining sequence for integer, It works for alphabetical strings.
My question is Why it is so ? and how to overcome this if i need to manage sequence?
Object key ordering is not guaranteed. See Does JavaScript Guarantee Object Property Order?. Use an array of objects to guarantee ordering.
var arr = [{"z":100}, {"x":75}, {"d":116}, {"c":15}, {"10":123}, {"9":12}]
If you want to maintain the order use "9.0", "10.0" instead of 9 or 10.
Try with this
{"z":100,"x":75,"d":116,"c":15,"10.0":123,"9.0":12}
And it is a known issue issue 164
The order of properties in objects are not guaranteed in JavaScript. If you would like something similar to an object that does guarantee order look into the Map Object.
var myMap = new Map();
myMap.set('z', 100);
myMap.set('x', 75);
myMap.set('d', 116);
myMap.set('c', 15);
myMap.set('10',113);
myMap.set('9', 12);
Order in maps IS guaranteed
Arrays also keep order, yet are not keyed by names, rather by an index.
Use an array if you want to keep the order. That is one of the way to maintain the order in javascript.
Can you try sort as a map?
I have misunderstood the question before.
Object[] obj = new Object[]{"z": 100, "x": 75, "d": 116, "c": 15, "10":123, "9":12};
for (int i = 0; i < obj.length; i++)
{
System.out.print(obj[i].toString() + " ");
}
Like
Map<String, String> objMap = new HashMap<String, String>();
objMap.put("z", 100); .....
entriesSortedByValues(objMap);
Or You can treat it like JSON
var arr = [
{name: "z",
value:100
},
.....];
then wrote a function like
funtion sortObj(column)
{
return function(x,y)
{
if(x[column] > y[column])
{
return 1;
}
elseif(x[column] < y[column]){return -1;}
else{return 0;}
}
}
array.sort(sortObj(value));
