I expected both scenario should runs loop x > php get() > loop y
I wonder why and how ? Thank you

Scenario one
loop break due to unable to get numrow outside the get() function
goal : get numrow outside the get() function

function test(){

            var arr = ["btcusdt","ethusdt"];

            for(var x=0;x<arr.length;x++){ // loop x
                
                $.get("length.php",{term:arr[x]},function(len){ // get table num rows
                    var numrow = parseInt(len); // return str then convert int
                })  
                
                alert(numrow) // unable to get

                for(var y=0;y<numrow;y++){ // loop y
                    alert(y)
                };
            }
   }

Scenario two
it runs loop x twice then go to get()

function test(){

            var arr = ["btcusdt","ethusdt"];

            for(var x=0;x<arr.length;x++){ // loop x
                
                $.get("length.php",{term:arr[x]},function(len){ // get table num rows
                    var numrow = parseInt(len); // return str then convert int

                    for(var y=0;y<numrow;y++){ // loop y
                       alert(y)
                    };
                })  
            }
   }