goto for JS

goto.c

first:
    printf("first\n")
    goto third;
second:
    printf("second\n");
thrid:
    printf("third\n");

goto.js

var destination = "first"
topLabel: while (true) {
    var jump = false;
    switch (destination) {
    case "first": // caseがラベル相当
        console.log("first");
        //ここから
        destination = "third";
        jump = true;
        break;
        //ここまでが goto third;
    case "second":
        console.log("second");
    case "third":
        console.log("third");
    }
    if (jump) {
        continue topLabel;
    }
    break; 
}

goto.py

class OutJump(Exception):
    pass

outjump = OutJump()
destination = "first"
while True:
    try:
        if destination == "first":
            print("first")
            destination = "third"
            raise outjump
        elif destination == "second":
            print("second")
        elif destination == "third":
            print("third")
    except OutJump as e:
        pass
    else:
        break