labeled statements

labeledstatements.js

//normal loop
for (var i=0; i < 3; i++) {
    for(var j = 0; j < 3; j++) {
        console.log(i,j);
    }
}
/* output for normal loop
0 0
0 1
0 2
1 0
1 1
1 2
2 0
2 1
2 2
*/


//normal loop with break on inner loop
for (var i=0; i < 3; i++) {
    for(var j = 0; j < 3; j++) {
        if (i == 1 && j==1) break;
        console.log(i,j)
    }
}
/* output for break on inner loop
0 0
0 1
0 2
1 0 //note that we dont have 1 1 and 1 2
2 0
2 1
2 2
*/


// break to 'labeled statement'
foobar : for (var i=0; i < 3; i++) {
    for(var j = 0; j < 3; j++) {
        if (i == 1 && j==1) break foobar; //break to 'foobar' labeled statement
        console.log(i,j)
    }
}
/* output for break to labeled statement is
0 0
0 1
0 2
1 0
*/