用于检查字符串是否包含“`”字符的正则表达式

Question

I'm trying to check if a string contains this character ` .

And if the character is found, to wrap that string between <div> .

For example:

`this is it

should become:

<div>this is it</div>

And I've tried to do it but it seem to not work:

let arr = "`this is it";
if (arr.includes('`')) {
  arr = arr.replace(/\`(\w+)\`/g, '<div>$1</div>');
}

Any ideas?

Answer 1

You can use

arr.replace(/`([^`]+)`?/g, '<div>$1</div>')

The regex matches

• ` - a backtick
• ([^`]+) - one or more chars other than backtick
• `? - an optional backtick

JavaScript demo

 const arrs = ["`test` is `here`","`this is it"]; const regex = /`([^`]+)`?/g; for (const arr of arrs) { console.log(arr, '=>', arr.replace(regex, '<div>$1</div>')); }

Answer 2

I presume that the backtick should only appear at the beginning of the line. If it is also needed at the end, add another one before the $ in the regex.

I also presume that your string is multiline, and any line can start with a backtick. If not, remove the m flag.

If there can be more than one backtick-delimited substrings in a line, make the * quantifier non-greedy with ? and remove the ^ and $ assertions. If such substring can span several lines, also add s flag.

 let arr = "`this is it"; arr = arr.replace(/^`(.+)$/mg, '<div>$1</div>'); console.log(arr)