The break statement, which is used to exit a loop early.
A label can be used with a break to control the flow more precisely. A label is simply an identifier followed by a colon(:) that is applied to a statement or a block of code.
Note: there should not be any other statement in between a label name and associated loop.
Example-1: Break from nested loop
<!DOCTYPE html>   <html>   <head>     <title>         Break Nested For loop     </title> </head>   <body>     <script type="text/javascript">         <!--         document.write(           "Entering the Geeks For Geeks!<br /> ");           for (var i = 0; i < 5; i++) {             document.write(               "For Upper Level in GfG : " + i + "<br />");             document.write("<br />")               for (var j = 0; j < 5; j++) {                 // Break from the inner loop                 if (j == 3) break;                   document.write(                   "For Deeper Level in GfG : " + j + " <br />");             }            // Break from the outer loop             if (i == 3) break;         }         document.write("Exiting the Geeks For Geeks!<br /> ");       </script> </body> </html |
Output:
Entering the Geeks For Geeks! For Upper Level in GfG : 0 For Deeper Level in GfG : 0 For Deeper Level in GfG : 1 For Deeper Level in GfG : 2 For Upper Level in GfG : 1 For Deeper Level in GfG : 0 For Deeper Level in GfG : 1 For Deeper Level in GfG : 2 For Upper Level in GfG : 2 For Deeper Level in GfG : 0 For Deeper Level in GfG : 1 For Deeper Level in GfG : 2 For Upper Level in GfG : 3 For Deeper Level in GfG : 0 For Deeper Level in GfG : 1 For Deeper Level in GfG : 2 Exiting the Geeks For Geeks!
Example-2: Break from nested loop using Labels.
<!DOCTYPE html> <html>   <head>     <title>         Break Nested For loop Using Labels     </title> </head>   <body>     <script type="text/javascript">         <!--         document.write("Entering the Geeks for Geeks!<br /> ");         upperloop: // This is the label name                     for (var i = 0; i < 5; i++) {                 document.write(                    "For Upper Level in GfG : " + i + "<br />");                 document.write("<br />");                 deeperloop:                     for (var j = 0; j < 5; j++) {                         // Break from the inner loop                         if (j > 3) break;                         // Do the same thing                         if (i == 2) break deeperloop;                         // Break from the outer loop                         if (i == 3) break upperloop;                         document.write("For Deeper Level in GfG: "                                       + j + " <br />");                     }             }         document.write("Exiting the Geeks For Geeks!<br /> ");       </script> </body>   </html> |
Output:
Entering the Geeks for Geeks! For Upper Level in GfG : 0 For Deeper Level in GfG: 0 For Deeper Level in GfG: 1 For Deeper Level in GfG: 2 For Deeper Level in GfG: 3 For Upper Level in GfG : 1 For Deeper Level in GfG: 0 For Deeper Level in GfG: 1 For Deeper Level in GfG: 2 For Deeper Level in GfG: 3 For Upper Level in GfG : 2 For Upper Level in GfG : 3 Exiting the Geeks For Geeks!
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