Ajax + $.each traversal, browser debug mode is normal, normal mode is not normal. . Kneel late at night and beg for advice.

Code first:

/ AJAX process

$.ajax({
    type: "POST",
    dataType: "json",
    data: {"objectId": objectId},
    async: false,
    url: "allTask.jsp" ,
    success: function(result){
        // AJAX 
        step_curr = steps_arr.indexOf(result["current"])+1;
        //  curr
        curr_arr = steps_arr.slice(0, step_curr);
        //  result
        for(var e in result){
            if(...){
                objj["XXX"] = result[e];
            } else {
                var _j = curr_arr.indexOf(e.slice(6));
                if( _j > -1){
                    objj[""+curr_arr[_j]] = result[e];
                }
            }
        }
        //  group33 .group33 : display:none
        curr_name = result["current"];
        $.each(result, function(index, value, array){
            if(...)){
                for(var k=0; k<value.length; kPP){
                    if(A && B) {
                        **$(".group33").show();
                        $("-sharpsubmit").attr("data-tid", "xxxx");**
                        break;
                    }
                }
            }
        });
        //ystep....
        $(".ystep").loadStep({
            steps: steps_arr,
            step: step_curr,
            objj: objj
        });
        $(".ystep").setStep(step_curr);
    },
    error:function(e,r,a){
        console.log("!!");
    }
});

code as above,
target; execute the following two sentences:

$(".group33").show();
$("-sharpsubmit").attr("data-tid", "xxxx");

< hr >

actual situation:

in browser debug mode (and with a breakpoint), the code does go in and execute the above two statements.
however, these two statements are not executed in browser normal mode.

= (ask the great god.) =

WHY?
the reason why ajax is asynchronous? But I didn"t find anything caused by asynchronism. Reason)