How to stop a javascript function from returning value

Question

I have a javascript method for validating the inputs in form and then return the serialised form data if it has passed validation.

function getFormData(form)  
{  
  if(validation failed)  
  {  
    alert("Invalid input"); 
    return;   
    //stop execution;  
  }  
  return $(form).serialize();  
}

I have another function calling the above function.

var data = getFormData();

The problem I face is, if validation failed, the code execution doesn't stop execution. How to stop execution after alert ? I tried return false; and then having a if check to see if it has returned false, it works. But is there any other way to stop executing immediately after alert. Because, I need to call this function at multiple places.

Possible duplicate of Javascript stop execution abort or exit — Kakashi Hatake
– Kakashi Hatake, Commented Mar 21, 2017 at 4:58

Community · Accepted Answer · 2017-05-23 11:46:21Z

1

Try this

throw new Error('Generated error manually to stop execution of script');

Or link to more sophisticated answer

How to terminate the script in Javascript

edited May 23, 2017 at 11:46

CommunityBot

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answered Mar 21, 2017 at 5:04

codemirror

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Comments

Anil · Accepted Answer · 2017-03-21 05:37:37Z

0

var isallpassed=0;    
function getFormData(form)  
    {  
        isallpassed=validation1 failed;
        isallpassed= isallpassed && validation2 failed;
        if(isallpassed)  
        {  
         return $(form).serialize(); 
        }  
      else{
        alert("Invalid input");
       }
    }

answered Mar 21, 2017 at 5:37

Anil

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