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Visualizaçõeswhile loop, JavaScript printing unexpected value
I have gone through this Question and Answer While loop inside while loop JavaScript
function getMaxLessThanK(n, k) {
let i = 1;
while (i < n) {
let j = i + 1;
while (j < n + 1) {
console.log(i, j)
j++
}
i++
}
}
when n = 5, what am I getting is
1 2
1 3
1 4
1 5
2 3
2 4
2 5
3 4
3 5
4 5
undefined
How to avoid this the last line undefined. what is the reason for it?
Can anyone help on this please?
Edit:
This is what the actual thing I am doing below.
·
Juan Pablo Isaza
1 Respostas
Responde à pergunta0
If you're running it in a console and get an undefined like this：
This undefined indicates that your statement runs without returning a value. It's not a result of your console.log.
If you make the function return something:
function getMaxLessThanK(n, k) {
let i = 1;
while (i < n) {
let j = i + 1;
while (j < n + 1) {
console.log(i, j)
j++
}
i++
}
return 'return value';
}
Then you'll get
·
Juan Pablo Isaza
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