JS2

function run(num) {

let x="Fizz",y="Buzz",z="Whizz",l="FizzBuzz",m="FizzWhizz",n="BuzzWhizz",q="FizzBuzzWhizz";

if(num%105==0)

return q;

else if(num%35==0)

return n;

else if(num%21==0)

return m;

else if(num%15==0)

return l;

else if(num==7)

return z;

else if(num==5)

return y;

else if(num==3)

return x;

else

return num.toString();

}

var test1 = function() {

let result = run(3);

if(result == 3) {

document.write('The test 1 failed')

}else {

document.write('The test 1 result is : '+ result)

}

document.write("

")

}

test1()

var test2 = function() {

let result = run(5);

if(result == 5) {

document.write('The test 2 failed')

}else {

document.write('The test 2 result is : '+ result)

}

document.write("

")

}

test2()

var test3 = function() {

let result = run(7);

if(result == 7) {

document.write('The test 3 failed')

}else {

document.write('The test 3 result is : '+ result)

}

document.write("

")

}

test3()

var test4 = function() {

let result = run(15);

if(result == 15) {

document.write('The test 4 failed')

}else {

document.write('The test 4 result is : '+ result)

}

document.write("

")

}

test4()

var test5 = function() {

let result = run(21);

if(result == 21) {

document.write('The test 5 failed')

}else {

document.write('The test 5 result is : '+ result)

}

document.write("

")

}

test5()

var test6 = function() {

let result = run(35);

if(result == 35) {

document.write('The test 6 failed')

}else {

document.write('The test 6 result is : '+ result)

}

document.write("

")

}

test6()

var test7 = function() {

let result = run(105);

if(result == 105) {

document.write('The test 7 failed')

}else {

document.write('The test 7 result is : '+ result)

}

document.write("

")

}

test7()

var test8 = function() {

let result = run(2);

if(result == 2) {

document.write('The test 8 failed')

}else {

document.write('The test 8 result is : '+ result)

}

document.write("

")

}

test8()

测试结果如下

The test 1 result is : Fizz

The test 2 result is : Buzz

The test 3 result is : Whizz

The test 4 result is : FizzBuzz

The test 5 result is : FizzWhizz

The test 6 result is : BuzzWhizz

The test 7 result is : FizzBuzzWhizz

The test 8 failed

收获：学会了这个在线编译器的使用，实现了测试，在此过程应该注意if语句判断应该从大到小的范围。