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JavaScript: Using a labeled break statement

Javascript label statements are used to prefix that particular label to an identifier. A label can be generally used with the continue and break statements to show and prefix the code more precisely on what is happening.

A label is simply an identifier followed by a colon (:).

So that normally when we use a label we can understand what is happening inside the code block with the label name and also act as a tag to break the block using its name.

Think of it as an alias name that is used for the whole block of the code.


break;  //without label
break labelname; //break loop with labelname


var y,z;
for (y = 0; y < 6; y++)
            break BreakLabel;
console.log("Outside loop");





Outside loop
  • So here we have a label named BreakLabel and also our Y and Z initialized outside.
  • So from we have taken two loops and placed a loop within a loop to iterate the Y value within Z and get the series of numbers in the form of count representation.
  • So here we will be using the label called BreakLabel to call the loop to perform the break on it.
  • Provided with the if condition within the loop that when the iteration comes to the point of 4 then the iteration breaks leaving anything comprised of 4 and beyond stops the iteration.
  • This is how we can use the labeled break statement.
Submitted by arilio666 on October 11, 2021

Ashwin is working with iVagus as a Technical Lead. He has experience in various technologies like Cypress, JavaScript, TypeScript, Rest Assured, Selenium, Cucumber, and Java.


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