Question

Doing some work in javascript
I have a multidimensional made up in this format ( I know it’s not an actually array object, bit it gives you an idea of the format

[
  [[“ip-address”][timestamp]],
  [[“ip-address”][timestamp]],
  [[“ip-address”][timestamp]],
  [[“ip-address”][timestamp]]
]

The array can include duplicate ip addresses and I need a way to first sort the array by timestamps and then echo out the first instance of the ip address (i.e. for each ip address I need the one with the earliest timestamp)

For example

[[“10.0.0.1”][13:01:34]]
[[“10.0.0.1”][ 13:21:56]]
[[“192.168.1.1”][23:45:12]]
[[“192.168.1.1”][12:34:42]]

Would give me the following output

10.0.0.1 = 13:01:34
192.168.1.1 = 12:34:42

I’ve had a hunt around and can’t see a way to do this so any help would be appreciated

Answer 1

something like this?

result=[];
$.each(source,function(ip,timestamp)
{
    if( result[ip]==undefined || timestamp < result[ip] )
    {
        result[ip]=timestamp;
    }
});