Converting php regex to javascript

Question

I am trying to convert following regex:

^(?:\d{12}|\d{9}|(?i:YHZ)?\d{6}|(?i:YHZ)?\d{8})$

into javascript but facing issues for escaping or handling "(?"

I tried verifying on https://regex101.com/#javascript but unable to handle it can anyone please share what needs to fix in the above regex so it can work in javascript

it validates for following cases a. yhz+6numeric (not case sensitive for the yhz) b. yhz+8numeric (not case sensitive for the yhz) c. 6numeric d. 8numeric e. 9 numeric f. 12 numeric — Swapy
– Swapy, Commented Jan 6, 2016 at 9:58

Tushar · Accepted Answer · 2016-01-06 10:18:44Z

4

JavaScript doesn't support partial case insensitive patterns. So (?:i is invalid in JS.

Use i flag to make the regex in-case-sensitive

/^(?:\d{12}|\d{9}|(YHZ)?\d{6}|(YHZ)?\d{8})$/i

Regex 101 Demo

From Comments:

it validates for following cases

a.    yhz+6numeric (not case sensitive for the yhz)
b.    yhz+8numeric (not case sensitive for the yhz)
c.    6numeric
d.    8numeric
e.    9numeric
f.    12numeric

The regex can be rewritten as

/^((yhz)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)$/i

Test this regex on Regex101

input:valid {
  color: green;
}
input:invalid {
  color: red;
}

<input type="text" pattern="((yhz|YHZ)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)" />

<br />
<br />it validates for following cases

<ul>
  <li>yhz + 6numeric</li>
  <li>yhz + 8numeric</li>
  <li>6 numeric</li>
  <li>8 numeric</li>
  <li>9 numeric</li>
  <li>12 numeric</li>
</ul>

If you don't want any capture group, use (?: at the beginning of group.

/^(?:(?:yhz)?[0-9]{6}(?:[0-9]{2})?|(?:[0-9]{6})(?:(?:[0-9]{2,3})|(?:[0-9]{6}))?)$/i

Regex101 Demo

edited Jan 6, 2016 at 10:18

answered Jan 6, 2016 at 10:01

Tushar

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1 Comment

Swapy Over a year ago

I used the code /^((yhz)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)$/i but i have to put the following into DHC where i have to add this regex to a key "format_validation_regex": "/^((yhz)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)$/i";, but now it gives error message for anything i enter

Swapy · Accepted Answer · 2016-01-07 09:46:08Z

input:valid {
  color: green;
}
input:invalid {
  color: red;
}

<input type="text" pattern="((yhz|YHZ)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)" />

<br />
<br />it validates for following cases

<ul>
  <li>yhz + 6numeric</li>
  <li>yhz + 8numeric</li>
  <li>6 numeric</li>
  <li>8 numeric</li>
  <li>9 numeric</li>
  <li>12 numeric</li>
</ul>

input:valid {
  color: green;
}
input:invalid {
  color: red;
}

<input type="text" pattern="((yhz|YHZ)?[0-9]{6}([0-9]{2})?|([0-9]{6})(([0-9]{2,3})|([0-9]{6}))?)" />

<br />
<br />it validates for following cases

<ul>
  <li>yhz + 6numeric</li>
  <li>yhz + 8numeric</li>
  <li>6 numeric</li>
  <li>8 numeric</li>
  <li>9 numeric</li>
  <li>12 numeric</li>
</ul>

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