Rule Operators

 

Rule Operators

When you create a modification rule, you will find the following operators:
  • Equals
  • Contains
  • Matches (Regex)
  • Matches (Wildcard)
Lets understand the use cases for each.
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Equals Operator

Equals operator does strict matching of URL intercepted by the browser with the URL given in rule.

Example

URL given in rule: http://www.google.com Intercepted URL: http://www.google.com/ (Observe trailing slash) Result: ❌ Does not match

Reason

Note a trailing / slash at the end of URL. A rule with Equals operator and URL as www.example.com does not match www.example.com/. You may consider adding Slash (/) at the end of URL in your rule. You can alternatively create two pairs in the same rule as well.

Contains Operator

Contains operator does a substring search of string provided in rule inside the URL intercepted by chrome.

Example 1

String in rule: yahoo Intercepted URL: https://www.yahoo.com/ Result: ✅ Match

Example 2

String in rule: com?a=1 Intercepted URL: https://www.got.com?a=2 Result: ❌ Does not match

Reason

com?a=1 is not a substring of a URL and hence it does not match.

RegEx Match Operator

Regex Match Operator matches a given Regex with the URL intercepted by chrome.
You can also use the values of group expressions in your destination URLs.

Example

URL Matches (Regex): /(.+).google/ig Destination: https://$1.google.com Result: âś… Match

Reason

In this case, above regex will be matched with intercepted URL. If regex is matched then $1 will be replaced in the destination URL and redirect will happen.

Wildcard Match Operator

Wildcard match operator matches expression with the URL intercepted by chrome.
We only support asterisk (*) as wildcard operator. * can match 0 or more characters in intercepted url.
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Caution In wildcard match, complete URL is matched with given expression and \* can be replaced with respective values in destination URL.

Example 1

Expression: *://*.yahoo.com URL: http://cricket.yahoo.com Result: $1 = http, $2 = cricket

Example 2

Expression: *yahoo URL: http://www.yahoo.com (Note the trails does not match ie .com) Result: ❌ Does not match

Example 3

Expression: *yahoo* URL: http://www.yahoo.com Result: $1 = http://www. $2=.com

Example 4

Expression: http://*.yahoo.com URL: http://cricket.yahoo.com/ (Note the trailing / slash in URL) Result: ❌ Does not match
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