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Editorial Team
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Asked: 2026-06-17T16:38:25+00:00

I’m trying to match a regex (containing 1 variable) against a page of HTML

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I’m trying to match a regex (containing 1 variable) against a page of HTML code stored as a string.

The HTML string is an array, each element containing something as shown below. (I have split on a certain tag). Each element of the array contains some data of a House (name, amount of square meters, etc). Fictional of course. The point is that I need to match only 1 of these houses by matching the text between the first TD tags, and the part that I need is the VALUE (digits) in the last INPUT tag of the form.

<TR BGCOLOR=#D4C0A1>
 <TD WIDTH=40%><NOBR>Luminous&#160;Arc&#160;2</NOBR></TD>
 <TD WIDTH=10%><NOBR>154&#160;sqm</NOBR></TD>
 <TD WIDTH=10%><NOBR>6460&#160;gold</NOBR></TD>
 <TD WIDTH=40%><NOBR>rented</NOBR></TD>
 <TD><TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0>
 <FORM ACTION= METHOD=post><TR><TD>
  <INPUT TYPE=hidden NAME=world VALUE=Olympa>
  <INPUT TYPE=hidden NAME=town VALUE="Yalahar">
  <INPUT TYPE=hidden NAME=state VALUE=>
  <INPUT TYPE=hidden NAME=type VALUE=houses>
  <INPUT TYPE=hidden NAME=order VALUE=>
  <INPUT TYPE=hidden NAME=houseid VALUE=37010>
  <INPUT TYPE=image NAME="View" ALT="View" SRC="" BORDER=0 WIDTH=120 HEIGHT=18>
</TD></TR></FORM></TABLE></TD></TR>

I constructed the following RegEx:

var regex = new RegExp(house + "[\\s\\S]+name=houseid value=([0-9]+)>", "i");

where house is the name of the house (in this example, Luminous&#160;Arc&#160;2) and the part I need would be the houseid 37010.

I figured this Regex should work quite fine and give me the hit that I need, however houses[i].match(regex) returns null every time. I get no match in the string.

I have tried several approaches so far, including attempting to convert the string to a DOM Object to split up on TR tags (the conversion failed). I feel that I am close, but I am stuck.

Does anyone see why my regex might fail to work?

Kenneth

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1 Answer

  1. Editorial Team

    I tried your regex with Cerbrus’s houses variable and it works fine.
    (I added the lazy quantifier ? to [\\s\\S]+, but it works fine without it as well.)

    var house = "Luminous&#160;Arc&#160;2";
var regex = new RegExp( house + "[\\s\\S]+?name=houseid value=([0-9]+)>", "i" );

houses.match( regex )[1];    // "37010"

    Presumably then, your house variable has the wrong value or houses[i] is not accessing the right string.

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