break
The break keyword is a loop terminator, allowing you to exit a loop prematurely.
Example 1: Stopping an Infinite Loop
In this example, the break keyword stops the infinite while loop when i becomes equal to 6, after the i++ operation.
Example 2: Breaking a for Loop
Here, the variable a is incremented by i during each iteration (0 + 1 + 2 + 3 + 4) until i becomes equal to 4. At that point, the break statement is triggered.
i = 0 | a = 0 + 0 |
i = 1 | a = 0 + 1 |
i = 2 | a = 1 + 2 |
i = 3 | a = 3 + 3 |
i = 4 | a = 6 + 4, break |
Example 3: Breaking a while Loop Immediately
In this example, the break statement inside the while loop immediately terminates the loop, preventing any code below it from executing within the same block.
Note
Remember that the
breakstatement is a powerful tool for controlling the flow of your loops, allowing you to exit them when specific conditions are met.
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Зміст курсу
Introduction to JavaScript
4. Conditional Statements
Introduction to JavaScript
break
The break keyword is a loop terminator, allowing you to exit a loop prematurely.
Example 1: Stopping an Infinite Loop
In this example, the break keyword stops the infinite while loop when i becomes equal to 6, after the i++ operation.
Example 2: Breaking a for Loop
Here, the variable a is incremented by i during each iteration (0 + 1 + 2 + 3 + 4) until i becomes equal to 4. At that point, the break statement is triggered.
i = 0 | a = 0 + 0 |
i = 1 | a = 0 + 1 |
i = 2 | a = 1 + 2 |
i = 3 | a = 3 + 3 |
i = 4 | a = 6 + 4, break |
Example 3: Breaking a while Loop Immediately
In this example, the break statement inside the while loop immediately terminates the loop, preventing any code below it from executing within the same block.
Note
Remember that the
breakstatement is a powerful tool for controlling the flow of your loops, allowing you to exit them when specific conditions are met.
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