How to replace this? (Javascript)-CodePudding

I want to replace

$addCmdReactions[test]

test

I know the regex (/\$addCmdReactions/i) but I don't know how to replace it

CodePudding user response：

I'm assuming all you want to do is remove the "$addCmdReactions[]" part.

You could use string .replace but you can also use .exec on the RegEx expression to extract whatever is between the square brackets. This could be useful as it's a bit more dynamic and cleaner and easily extendible depending on the kind of match you want.

See below

const text = '$addCmdReactions[test]';
const matches = /\$addCmdReactions\[(. )\]/g.exec(text);

console.log(matches);
console.log(matches[1]); // "test" - Has the first match from the (. )

CodePudding user response：

@Azarro's solution works fine for a single occurrence but will return wrong results when multiple $addCmdReactions[test]s are to be replaced.

The following will work with any number of replacements:

const text = '$addCmdReactions[test] and $addCmdReactions[toast].';

console.log(text.replace(/\$addCmdReactions\[([^\]] )\]/g,"$1"));

// Azarro's approach:
const matches = /\$addCmdReactions\[(. )\]/g.exec(text);
console.log("Azarro:", matches);