SyntaxError: missing ; before statement

Question

I am getting this error :

SyntaxError: missing ; before statement

Why would I get that from this code? How can I get around this ?

var $this = $("input");
foob_name = $this.attr('name').replace(/\[(\d+)\]/, function($0, $1) {
   return '[' + (+$1 + 1) + ']';
}));

Answer 1

Looks like you have an extra parenthesis.

The following portion is parsed as an assignment so the interpreter/compiler will look for a semi-colon or attempt to insert one if certain conditions are met.

foob_name = $this.attr('name').replace(/\[(\d+)\]/, function($0, $1) {
   return '[' + (+$1 + 1) + ']';
})