javascript break label showing syntax error

Question

I have the code below :

 LableName_1:    
  if(ttipPos == 'left') {   
     //do sumthing  
     break L;  
   }    
  LableName_2:            
  if(ttipPos == 'right') {  
     //do sumthing  
     break LableName_1;  
   }

where I used break with label name

This is showing syntax error, but if I replace break LableName_1 with break LableName_2 within second if statement, the syntax error doesn't occur .... Is there any problem related to scope of using break with label.

break is a keyword in JavaScript. what are you trying to do? — Raptor
– Raptor, Commented Sep 9, 2013 at 6:11

Mike Stockdale · Accepted Answer · 2016-10-09 04:47:03Z

2

The second break fails because it isn't inside of label #1. It can't break something it's not in.

LabelName_2: {
  LabelName_1: {
    while (1) {
      console.log('label 1');
      break LabelName_1;
    }
  }
  console.log('label 2')
  break LabelName_2;
}
console.log('out of labels');

edited Oct 9, 2016 at 4:47

Mike Stockdale

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answered Sep 9, 2013 at 6:23

Joe Simmons

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2 Comments

user2702482 Over a year ago

Ok...but cant we go to LableName_1 directly from he second if statement...is there any way like goto(I know that javascript has no goto statement)..but is there any other way like goto etc so that we can directly jump to LableName_1 ?

Joe Simmons Over a year ago

By using a function call. They are basically gotos, in a sense. I'd help you more if I knew what you were trying to do.

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