Question

how can i exclude the $1 from the replace rule?

regex = new RegExp('hallo, test, blub', 'gi');


content = content.replace(regex,'<strong>$1</strong>');

alert('$1'); // dont work

Thanks in advance!
Peter

Answer 1

$1 refers to the first group captured by the regex and is available only in the replacement string.

For example, if content is The score is 234 and the regex is score is (\d+), it will be replaced as <strong>234</strong>.

If you want the value, you can use content.match(regex)[1].

var c = "asd 123";
var r = /[a-z]+\s+(\d+)/;
var match = c.match(r);
if(match)
    console.log(match[1]);
else
    console.log("no match");