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Anudeep Nayakoti
2,032 Pointswhy there is no semicolon to the final condition declared inside the 'For' loop?
for(var counter=0; counter<=10; counter+=10) { statement1; } -------xxx-------------------- var counter=0; while(counter<=10){ counter+=1;----->Here we are using semicolon; }
2 Answers
Steven Parker
229,657 PointsThe parts of a for loop are not statements.
A for statement has three sections, these are known as the initializer, condition, and iterator. They are enclosed in parentheses and separated by semicolons. These semicolons serve a different purpose than the ones you see at the end of statements.
If you were to put a semicolon after the iterator section, that would imply that there is a fourth (empty) section and would cause a syntax error.
Anudeep Nayakoti
2,032 PointsI agree. I did see the error; But inside the while loop, we do keep and the interpreter in the browser doesn't throw error;
Steven Parker
229,657 PointsThe semicolon you are referring to is in the body of the while loop. This is the same as the semicolon you show in the body of the for loop after "statement1".
A while statement has only one section (the condition), and there is no semicolon there.