JS API: Get Unit list

thanks for answer kopa but that examples for begining develope wialon is too difficult for me. in this documentation is all examples into one object.  i need code with get units not more. please wirte if you know

thanks kopa for answer. i write that code :

var ss = mySession.searchItem(\"11691002670134\",0x00000001,function(code,item){
        if(code){
        wialon.core.Errors.getErrorText(code);
        } else{
        alert(item);
        }
        });

but its not correct. please fix my problem. i want alert search result. thanks.

var ItemId = '11691002670134';
mySession.searchItem(ItemId, wialon.item.Item.dataFlag.base, function(code, item){alert(item.getName());});

error:

// get available units

    // search parameters
    var searchSpec = {
      itemsType:"avl_unit",
      propName: "sys_name",
      propValueMask: "*",
      sortType: "sys_name"
    };

    var dataFlags = wialon.item.Item.dataFlag.base|wialon.item.Item.dataFlag.image|wialon.item.Unit.dataFlag.restricted|wialon.item.Unit.dataFlag.lastMessage;
    wialon.core.Session.getInstance().searchItems(searchSpec, true, dataFlags, 0, 0, function(code, data) {
      if (code) {
        alert(wialon.core.Errors.getErrorText(code));
        return;
      }

      // TODO:
    });

hello,
I hope this example will useful for you.
https://sdk.wialon.com/playground/demo/get_units