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C # tutorial
The break statement "jumps out" of a loop.The continue statement "jumps over" one iteration in the loop
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:
for (let i = 0; i < 10; i++) {
if (i === 3) { break; }
text += "The number is " + i + "<br>";
}
In the example above, the break
statement ends the loop ("breaks" the loop)
when the loop counter (i) is 3.
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:
for (let i = 0; i < 10; i++) {
if (i === 3) { continue; }
text += "The number is " + i + "<br>";
}
To label JavaScript statements you precede the statements with a label name and a colon:
label:
statements
The break
and the continue
statements are the only JavaScript statements that
can "jump out of" a code block.
Syntax:
break labelname;
continue labelname;
The continue
statement (with or without a label reference) can only be used to skip one
loop iteration.
The break
statement, without a label reference, can only be used to
jump out of a loop
or a switch.
With a label reference, the break statement can be used to jump out of any code block:
const cars = ["BMW", "Volvo", "Saab", "Ford"];
list: {
text += cars[0] + "<br>";
text += cars[1] + "<br>";
break list;
text += cars[2] + "<br>";
text += cars[3] + "<br>";
}
A code block is a block of code between { and }.
Make the loop stop when i
is 5.
for (i = 0; i < 10; i++) { console.log(i); if (i == 5) { ; } }