How to solve "identifier starts immediately after numeric literal"

Question

I have tried for following code in javascript, but I get:

identifier starts immediately after numeric literal 

error is coming for following script, example mcnDel="016160A1"

<script>
 mcnDel="016160A1"               
 var val="<a href='javascript: void(0);' onclick='removeRow("+mcnDel+");'><img src=images/delete.png></a></a></td>"  
</script>

Answer 1

You need to wrap the string with quotes.

onclick='removeRow("+mcnDel+");'

needs to be

onclick='removeRow(\""+mcnDel+"\");'

Answer 2

FYI, I got that error while trying to use BigInt() and big integer litterals (e.g. 123n on Safari for iOS.

Answer 3

Dont forget Javascript id cannot start with a number, make sure the value of your variable is not starting with a number.