Regex get html input value dynamic tag position

Question

I've question about how to get value from input html when the tag position is dynamic. This is the example input:

<input type="text" autocomplete="" name="confirmedEmailAddress" id="emailaddress" maxlength="60" value="fname.lname@gmail.com" class="txt-box  txtbox-m "  aria-describedby="" aria-required="true" disabled="disabled">

<input type="text" autocomplete="" value="fname.lname@gmail.com" name="confirmedEmailAddress" id="emailaddress" maxlength="60" class="txt-box  txtbox-m "  aria-describedby="" aria-required="true" disabled="disabled">

This is what I'm able to do, but can not detect if tag value position before id position like in the second example.

/<input(?:.*?)id=\"emailaddress\"(?:.*)value=\"([^"]+).*>/i

Wait I got problem posting by mobile phone. Switch to notebook. — Christoforus Surjoputro, Mar 04 '18 at 06:07

score 4 · Accepted Answer · answered Mar 04 '18 at 09:29

4

You can try this:

<input.*?(?:id=\"emailaddress\".*?value=\"([^"]+)|value=\"([^"]+).*?id=\"emailaddress\")[^>]*>

Demo

The matches are shown on the right pane (not visible on test string for some reason). Since there's a |, you'll have to check both group 1 and group 2.

As many pointed out though, this is not something that should be done with regular expressions if you can avoid it.

answered Mar 04 '18 at 09:29

Jeto

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I think its is possibly correct. I'll try it when I'm home. Thanks. – Christoforus Surjoputro Mar 04 '18 at 11:12
Could you hepl me to answer my other question here: https://stackoverflow.com/questions/49097660/how-to-get-only-specific-input-html-tag-with-regex-that-separate-by-space, @Jeto? – Christoforus Surjoputro Mar 04 '18 at 16:35

William Feirie · Answer 2 · 2018-03-04T06:46:18.423

0

You can use "Beautiful Soup" module.

from bs4 import BeautifulSoup
html = '''<input type="text" autocomplete="" name="confirmedEmailAddress" id="emailaddress" maxlength="60" value="fname.lname@gmail.com" class="txt-box  txtbox-m "  aria-describedby="" aria-required="true" disabled="disabled">
        <input type="text" autocomplete="" value="fname.lname@gmail.com" name="confirmedEmailAddress" id="emailaddress" maxlength="60" class="txt-box  txtbox-m "  aria-describedby="" aria-required="true" disabled="disabled">'''
soup = BeautifulSoup(html,"lxml")
print(soup.find(id="emailaddress")['value'])

In front end app,can you use jquery.js?

$("#emailaddress").val()

document.getElementById('emailaddress').value

edited Mar 04 '18 at 06:46

answered Mar 04 '18 at 06:23

William Feirie

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Nope. I'm only able to use regex. No HTML parser because I'll do it in front end apps. – Christoforus Surjoputro Mar 04 '18 at 06:27
Can you use jquery.js? – William Feirie Mar 04 '18 at 06:36
Nope. No document, DOM, and any other front end standards enabled because it used based on jscore which is it doesn't have all that oustanding fearure. – Christoforus Surjoputro Mar 04 '18 at 06:53
You really should not be using regex to parse HTML, or else [H̸̡̪̯ͨ͊̽̅̾̎Ȩ̬̩̾͛ͪ̈́̀́͘ ̶̧̨̱̹̭̯ͧ̾ͬC̷̙̲̝͖ͭ̏ͥͮ͟Oͮ͏̮̪̝͍M̲̖͊̒ͪͩͬ̚̚͜Ȇ̴̟̟͙̞ͩ͌͝S̨̥̫͎̭ͯ̿̔̀ͅ](https://stackoverflow.com/a/1732454/3483203) – user3483203 Mar 04 '18 at 07:10
You tagged your question with `preg_match`, a PHP function. Why then? @ChristoforusSurjoputro – revo Mar 04 '18 at 08:56
@chrisz, not every case able to use HTML parser. – Christoforus Surjoputro Mar 04 '18 at 09:22

Regex get html input value dynamic tag position

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