RegEx line shows warning in jsHint

Question

I haave the following line in my code :

invitationMessage = invitationMessage.replace(/{{from}}/g, from);

when i do jsLint on the code, it shows the following warning

unescaped {

what is the correct way to write this statement? What is wrong with this statement?

Answer 1

Escape the value { and } :

invitationMessage = invitationMessage.replace(/\{\{from\}\}/g, from);

Because these are RegExp symbols which can be used like:

\*{1, 3}

It matches * or ** or *** . An asterisk with a length between 1 and 3