Question

I’m trying to find about text and width value(so: 50%). To select 50% with regex I have to add width=" inside the regex. So, width="\d{2}% will select width="50% but I need to select only 50% in the first one.

In the second one, I have to select(find) only about text not <td>about.

<tr>
    <td width="50%">about</td>

1. Select the width value with percentage(search with “width” word but not select “width”).
2. Select only “about” string

Answer 1

Well you will find out that using regular expressions to parse HTML is near impossible.

But the basic reg exps would be:

var reWidth = /width="(\d{1,3}%)"/i;
var reCellText = /<td[^>]?>([^<]*)/i;

[EDIT]

Guessing by your comment below, you do not understand capture groups.

var str = '<td width="25%">';
var myMatch = str.match(reWidth);
if(myMatch){
    alert( myMatch[1] );
}