regex in javascript to remove numeric path from url

Question

I have URLs like below with customer ID etc. I want to remove them and put an asterisk instead of them. Below examples will give you a better idea.

/paas/service/3.0/part/d878bc1e-9bb8-4a0e/log/account/7367c100-9390-11e3/resource/AdminHistory --> /paas/service/3.0/part/*/log/account/*/resource/AdminHistory

/hs/service/3.0/bootstrap/mnd/3388959354 --> /hs/service/3.0/bootstrap/mnd/*

/paas/service/3.0/part/d878bc1e-9bb8-4a0e-b224-a4ba0d7dfcec/asset --> /paas/service/3.0/part/*/asset

/paas/service/3.0/part/3c5631df-52c9/servicepolicy/8ee6ba08-8d7a/carrierPlan/c2b4a364-98e3-4546 --> /paas/service/3.0/part/*/servicepolicy/*/carrierPlan/*

The IDs are either numeric or alphanumeric. How should i approach this ?

You can just do something like: url.replace(new RegExp(id, 'g'), '*'). — Spencer Wieczorek
– Spencer Wieczorek, Commented Oct 18, 2016 at 0:29

nnnnnn · Accepted Answer · 2016-10-18 00:54:03Z

The IDs are either numeric or alphanumeric.

All of the parts in your example URLs contain either letters or digits, so you need to know what the text is before the ID so that you can target that plus the ID that follows.

So perhaps something like this:

function modifyURL(url) {
  return url.replace(/(\/(?:part|account|mnd|servicepolicy|carrierPlan)\/)[^\/]+/g, "$1*");
}

console.log(modifyURL("/paas/service/3.0/part/d878bc1e-9bb8-4a0e/log/account/7367c100-9390-11e3/resource/AdminHistory"));
console.log(modifyURL("/hs/service/3.0/bootstrap/mnd/3388959354"));
console.log(modifyURL("/paas/service/3.0/part/d878bc1e-9bb8-4a0e-b224-a4ba0d7dfcec/asset"));
console.log(modifyURL("/paas/service/3.0/part/3c5631df-52c9/servicepolicy/8ee6ba08-8d7a/carrierPlan/c2b4a364-98e3-4546"));

To explain the regex I've used:

(       // start of capturing submatch         
\/      // match a forward slash
(?:     // start of non-capturing group       
part|account|mnd|servicepolicy|carrierPlan   // match one of those words
)       // end of non-capturing group
\/      // match forward slash
)       // end of capturing submatch
[^\/]+  // match one or more of anything but a forward slash

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