I have the following JSON:
var somearr = {
"08":{val:blabla,val:blabla},
"09":{val:blabla,val:blabla},
"10":{val:blabla,val:blabla},
"11":{val:blabla,val:blabla},
...
"14":{val:blabla,val:blabla}
}
when doing
for ( i in somearr) {
console.log(i);
}
I got this sequence: 10, 11, ... 14, 08, 09
How can the original sort order be achieved?
Thanks in advance for help.
The type of somearr you defined is a map(dict) not an array. You can define an array by using [] e.g.
var somearr = [{val:blabla,val:blabla}, {val:blabla,val:blabla}, {val:blabla,val:blabla}];
for(var i in somearry) {
console.log(i);
}
You'll get what you want
for...in for arrays. The iteration order is just as undefined as it for an object, and will also return methods added to Array.prototype.
Put the keys into an array, sort it, then iterate over it, and pull from the object.
Using Underscore.js:
var keys = _.keys(somearr).sort();
_.each(keys, function(key) {
var value = somearr[key];
console.log(value);
});
The iteration order of properties using for...in is specified as being implementation-specific, and browsers do vary. Therefore if you need a particular order, you must use an array, which you can then sort and iterate over using a for loop. Here's how you can do it:
var keys = [];
for (var name in somearr) {
if (somearr.hasOwnProperty(name)) {
keys.push(name);
}
}
keys.sort();
for (var i = 0; i < keys.length; ++i) {
console.log(keys[i] + "=>" + somearr[keys[i]]);
}
