[removed] how to pass found string.replace value to function?

Question

When I have something like this:

var str = \"0123\";
var i = 0;
str.replace(/(\\d)/g,function(s){i++;return s;}(\'$1\'));
alert(i);

Why doe

Answer 1

You are calling the function, which increments i once, and then returns the string '$1'.

To pass the value to a function, you can do:

str.replace(/\d/g, function (s) { /* do something with s */ });

However, it looks like you don't actually want to replace anything... you just want a count of the number of digits. If so, then replace is the wrong tool. Try:

i = str.match(/\d/g).length;