Javascript replace with reference to matched group?
I have a string, such as hello _there_. I'd like to replace the two underscores with <div> and </div> respectively, using JavaScript. The output would (therefore) look like hello <div>there</div>. The string might contain multiple pairs of underscores.
What I am looking for is a way to either run a function on each match, the way Ruby does it:
"hello _there_".gsub(/_.*?_/) { |m| "<div>" + m[1..-2] + "</div>" }
Or be able to reference a matched group, again the way it can be done in ruby:
"hello _there_".gsub(/_(.*?)_/, "<div>\\1</div>")
Any ideas or suggestions?
"hello _there_".replace(/_(.*?)_/, function(a, b){
return '<div>' + b + '</div>';
})
Oh, or you could also:
"hello _there_".replace(/_(.*?)_/, "<div>$1</div>")
You can use replace instead of gsub.
"hello _there_".replace(/_(.*?)_/g, "<div>\$1</div>")
For the replacement string and the replacement pattern as specified by $. here a resume:
https://i.stack.imgur.com/ynEua.png
link to doc : here
"hello _there_".replace(/_(.*?)_/g, "<div>$1</div>")
Note:
If you want to have a $ in the replacement string use $$. Same as with vscode snippet system.
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$1instead of\1? Would someone provide a link to documentation?replacementValuecan be a function and it is passed different arguments based on the catch groups? Amazing!"hello _there_".replace(/_(.*?)_/, /<div>\1<\/div>/).