写下通用代码

function noOfLooping(m,n) {
    if(m > n) {
        smallestValue = n;
    } else {
        smallestValue = m;
    }

    if(smallestValue % 2 == 0) {
            return smallestValue/2;
    } else {
            return (smallestValue+1)/2;
    }
}

function squarePrint(m,n) {
    var looping = noOfLooping(m,n);
    for(var i = 0; i < looping; i++) {
        for(var j = i; j < m - 1 - i; j++) {
                console.log(i+''+j);
        }
        for(var k = i; k < n - 1 - i; k++) {
                console.log(k+''+j);
        }
        for(var l = j; l > i; l--) {
                console.log(k+''+l);
        }
        for(var x = k; x > i; x--) {
                console.log(x+''+l);
        }
    }
}

squarePrint(6,4);