Author: Michal Szymanski
The break
statement "jumps out" of a loop.
The continue
statement "jumps over" one iteration in
the loop.
The Break Statement
You have already seen the break
statement used in an earlier
chapter of this tutorial. It was used to "jump out" of a switch()
statement.
The break
statement can also be used to jump out of a loop.
The break
statement breaks the loop and continues executing the code after
the loop (if any):
var text = "";
var i;
for (i = 0; i < 10; i++) {
if (i === 3) { break; }
text += "The number is " + i + "<br>";
}
Live preview - A loop with a break
statement.
The Continue Statement
The continue
statement breaks one iteration (in the loop), if a specified
condition occurs, and continues with the next iteration in the loop.
This example skips the value of 3:
var text = "";
var i;
for (i = 0; i < 10; i++) {
if (i === 3) { continue; } // If i = 3 then skip and continue to the next iteration
text += i;
}
Live preview - "3" is missed
Exercises - test your knowledge
Exercise 1
Make the loop stop when i
is 5.
for (i = 0; i < 10; i++) {
console.log(i);
}
for (i = 0; i < 10; i++) {
console.log(i);
if (i == 5) {
break;
}
}
Exercise 2
Make the loop jump to the next iteration when i
is 5.
for (i = 0; i < 10; i++) {
console.log(i);
}
for (i = 0; i < 10; i++) {
console.log(i);
if (i == 5) {
continue;
}
}
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