label : Label « Statement « JavaScript Tutorial

The label keyword provides an identifier that can be used with break or continue.

You can associate a block of JavaScript statements with a label.

When a label is called using break or continue, code is executed.

<html>
    <body>
    <script language="JavaScript">
    <!--
    myLabelA:
       var x = 2+2;
       var y = 5*5;
       document.write("The value of 2+2 is: " + x + "<br>");

       myLabelB:
          for(i=0; i<5; i++){
              document.write("Ths value of i is: " + i + "<br>");
              if(i==2){
                 break myLabelB;
              }
          }
          document.write("I did some more." + "<br>");
          document.write("The value of 5 x 5 is: " + y + "<br>");
    -->
    </script>
    </body>
    </html>

3.10.Label
	3.10.1.	label