javascript - Better Way to Escape Dollar Signs in the String Used By String.prototype.replace

Question

I want to replace a string by another. I found when the replaceValue contains \"$\", the replace will fail. So I am trying to escape \"$\" by

Answer 1

Your method to escape the replacement string is correct.

According to section 15.5.4.11 String.prototype.replace of ECMAScript specification edition 5.1, all special replacement sequences begins with $ ($&, $`, $', $n, $nn) and $$ specify a single $ in the replacement.

Therefore, it is sufficient to escape all $ with double $$ like what you are doing right now if the replacement text is meant to be treated literally.

There is no other concise way to do the replacement as far as I can see.