$(function(){

​

var array = ['123.456789,123.1','456.7890123,234.1','789.0123456,345.1'];

​

var array1 = [], array2 = [];

​

for(var i=0; i<array.length; i++){

  array1[i] = array[i].split(",")[0];

  array2[i] = array[i].split(",")[1];

}

  /* Not necessary, just testing */

  for(var j=0; j<array1.length; j++){

    $("#array1").append("<li>" + array1[j] + "</li>");

  }

  for(var k=0; k<array2.length; k++){

    $("#array2").append("<li>" + array2[k] + "</li>");

  }

​

});