Sort array by decimal then by string - Javascript -

i need sort array of format, using plain old javascript.

var arr = ["0.01 basic", "0.01 sef", "0.015 basic"]; 

what need array sorted first decimal string , produce output below;

arr = ["0.01 basic", "0.015 basic", "0.01 sef"]; 

i cannot use jquery in performing sort. plain old javascript.

you can :

arr.sort(function(a,b){    var @ = a.split(' '), bt = b.split(' ');    if (at[1]!=bt[1]) return at[1]>bt[1] ? 1 : -1;    return parsefloat(at[0])-parsefloat(bt[0]); }); 

if want sort big array, might faster cache keys. doesn't matter arrays.

example :

["0.01 basic", "0.01 sef", "0.015 basic", "0.2 basic", "0.001 sef", "0.2 aaa"] -> ["0.2 aaa", "0.01 basic", "0.015 basic", "0.2 basic", "0.001 sef", "0.01 sef"]