I was trying to code along a tutorial on using the “continue” statement in a while loop. In the tutorial, the code was written as shown below and it worked fine.
...var x = 1; document.write("Entering loop"); while (x < 20) { x++; if (x == 5) { continue; } document.write(x + "<br />"); } document.write("Exiting the loop");...
but I tried it differently and it resulted to an infinite loop when I put the increment statement after the “if” block as shown below.
... var x = 1; document.write("Entering loop"); while (x < 20) { if (x == 5) { continue; } x++; document.write(x + "<br />"); } document.write("Exiting the loop"); ...
I have tried to wrap my head around it but I have not been able to figure it out. Why is this so?
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Answer
The
if (x == 5) { continue; }
alone means that x will never change once it reaches 5. Putting x++ before that means that x will change.
With x++ after, the loop will continue
every time, infinitely.