break与continue跳出的理解

    var k1 = 0;
    startFor:
    for (i = 0; i < 10; i++) {
            for (l = 0; l < 10; l++) {
                if (l == 5) {
                    break;
                    }
                k1++;
            }
    }
  console.log("case1 break当前循环："+k1);//50
    var k2=0;
    startFor:
    for (i = 0; i < 10; i++) {
            for (l = 0; l < 10; l++) {
                if (l == 5) {
                    break startFor;
                }
                k2++;
            }
    }
   console.log("case2 break外面循环："+k2);//5
    var k3=0;
    startFor:
    for (i = 0; i < 10; i++) {
            for (l = 0; l < 10; l++) {
                if (l == 5) {
                    continue;
                }
                k3++;
            }
    }
   console.log("case3 continue当前循环："+k3);//90
    var k4=0;
    startFor:
    for (i = 0; i < 10; i++) {
            for (l = 0; l < 10; l++) {
                if (l == 5) {
                    continue startFor;
                }
                k4++;
            }
    }
    console.log("case4 continue外面循环："+k4);//50