Using regex in JavaScript to perform destructuring assignment

My current task involves reordering a specific string of text, 'Set 1 Total Games Over/Under 9.5', using regex to make it read as 'Under/Over N Giochi Set 1'. The code snippet that achieves this is as follows:

let marketLabel = 'Set 1 Total Games Over/Under 9.5';
match = regexUnderOver.exec(marketLabel);
browserReturn = match[3] + '/' + match[2] + ' ' + match[4] + ' Giochi Set ' + match[1];

However, I am interested in implementing destructuring assignment to reorder the data more efficiently before assigning it to the 'browserReturn' variable. Despite attempting to follow MDN conventions, I find it challenging to grasp. If possible, could you demonstrate how I can achieve this using the example provided in the code below?

let marketLabel = 'Set 1 Total Games Over/Under 9.5';
const regexUnderOver = /^Set ([0-9.]+) Total Games (Over)\/(Under) ([0-9.]+)$/;
match = regexUnderOver.exec(marketLabel);
browserReturn = match[3] + '/' + match[2] + ' ' + match[4] + ' Giochi Set ' + match[1];
return browserReturn;

Answer №1

Seems like you're interested in this:

let marketLabel = 'Set 1 Total Games Over/Under 9.5';
const regexUnderOver = /^Set ([0-9.]+) Total Games (Over)\/(Under) ([0-9.]+)$/;
let [fullmatch, firstNum, over, under, lastNum] = regexUnderOver.exec(marketLabel);
let browserReturn = `${under}/${over} ${lastNum} Giochi Set ${firstNum}`;
console.log(browserReturn);

The

[fullmatch, firstNum, over, under, lastNum] = regexUnderOver.exec(marketLabel)
part is worth noting:

  • fullmatch - the entire match
  • firstNum - Contents of capture group 1
  • over - Contents of capture group 2
  • under - Contents of capture group 3
  • lastNum - Contents of capture group 4

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