Only a simple verification is required - Uncaught SyntaxError: Unexpected token else

I am not a JavaScript developer and I'm facing an issue (Uncaught SyntaxError: Unexpected token else)

on one of our web pages ...

I strongly believe this is a repetition of 2 previously answered questions in similar topics:

1) Syntax Error: Unexpected token Else 2) Prompt JavaScript If Else Unexpected Token else

So, I admit my mistake ... However, I need to confirm if my case completely matches the referenced cases by checking for a trailing ;

Here's the script causing the issue:

<script type="text/javascript">
if("0" == 0) var t = 'existing' else var t = 'new';
document.write('<scr'+'ipt type="text/javascript" src="//my.domain.com/tag.js?ck=XXX&Retarget=domain:'+t+':psd:sku:XXXXXXXX"></scr'+'ipt>');
</script>

In Chrome, the error occurs after the if statement

javascriptif-statement

Answer №1

Ensure to include the ; at the end of your command. When using multiple commands in a line, remember to terminate each command with ; Here is the corrected version:

<script type="text/javascript>
if("0" == 0) var t = 'existing'; else var t = 'new';
document.write('<scr'+'ipt type="text/javascript" src="//my.domain.com/tag.js?ck=XXX&Retarget=domain:'+t+':psd:sku:XXXXXXXX"></scr'+'ipt>');
</script>

In any case, it is advisable to use brackets {} instead of the abbreviated version

Answer №2

When comparing "0" to 0, the variable t is set to 'existing' if true, and 'new' if false.

Answer №3

You should consider the following:

if("1" === 1) 
{
   var result = 'match'; 
}
else 
{
   var result = 'mismatch';
}

It is quite uncommon to compare "1" === 1.

Answer №4

Perhaps it would be more efficient to utilize an inline if statement for defining the variable "t," which can also resolve your issue

<script type="text/javascript>
        var t = ("0" == 0) ? 'existing' : 'new';
        document.write('<scr'+'ipt type="text/javascript" src="//my.domain.com/tag.js?ck=XXX&Retarget=domain:'+t+':psd:sku:XXXXXXXX"></scr'+'ipt>');
    </script>

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