正则表达式：在第一个反斜杠出现后查找特定单词

Question

I'm wanting to use regex to look for the word "bacon" after the first "/" occurrence.

For example:

Should return true:

console.log('1 - ', myRegexFunction('www.bacondelivery.com/weekly-bacon-delivery/'));
console.log('2 - ', myRegexFunction('www.bacondelivery.com/daily-bacon-delivery/'));
console.log('3 - ', myRegexFunction('www.bacondelivery.com/bacon-of-the-month-club/'));

Should return false:

console.log('4 - ', myRegexFunction('www.bacondelivery.com/'));
console.log('5 - ', myRegexFunction('www.bacondelivery.com/?some_param'));
console.log('6 - ', myRegexFunction('www.bacondelivery.com/about/'));
console.log('7 - ', myRegexFunction('www.bacondelivery.com/contact-us/'));

Here's what I currently have:

function myRegexFunction(url) {
  var regex = new RegExp("^([a-z0-9]{5,})$");
  if (regex.test(url)) {
      return true;
  } else {
      return false;
  }
}

Thanks!

Answer 1

You may use this regex for this:

^[^\/]+\/[^\/]*\bbacon\b.*

RegEx Demo

RegEx Details:

• ^ : Start
• [^\/]+ : Match 1 or more of any character that is not a /
• \/ : Match a /
• [^\/]* : Match 0 or more of any character that is not a /
• \bbacon\b : Match complete word bacon
• .* : Match remaining text on this line

Code:

 function myRegexFunction(url) { const regex = /^[^\/]+\/[^\/]*\bbacon\b.*/; return regex.test(url); } console.log('1 - ', myRegexFunction('www.bacondelivery.com/weekly-bacon-delivery/')); console.log('2 - ', myRegexFunction('www.bacondelivery.com/daily-bacon-delivery/')); console.log('3 - ', myRegexFunction('www.bacondelivery.com/bacon-of-the-month-club/')); console.log('4 - ', myRegexFunction('www.bacondelivery.com/')); console.log('5 - ', myRegexFunction('www.bacondelivery.com/?some_param')); console.log('6 - ', myRegexFunction('www.bacondelivery.com/about/')); console.log('7 - ', myRegexFunction('www.bacondelivery.com/contact-us/'));

Answer 2

Try using the following regex:

\/.*\bbacon\b

If you get a match, it means you have that word in your url. If you need to match it case-insentitively, then you can use the 'i' modifier.

Regex Explanation:

• \/ : a slash
• .* : any character
• \bbacon\b : your hotword between word boundaries

Check the demo here .

---

EDIT : If you want to match your bacon " word " specifically after the first occurrence, check anubhava's answer.

Answer 3

I would go with a simple one : const regex = /\/.*(bacon)/

function myRegexFunction(url) {
  var regex = /\/.*(bacon)/;
  if (regex.test(url)) {
      return true;
  } else {
      return false;
  }
}

• \/ to match after a /
• .* 0 to n character
• (bacon) your pattern (parenthesis are optional)

Be aware it will not work if your link is http://baconurl/…

Answer 4

你试过这个吗？

/\/.*bacon/