使用Javascript正则表达式从HTML中提取文本

Question

I am trying to parse a webpage and to get the number reference after <li>YM#. For example I need to get 1234-234234 in a variable from the HTML that contains

<li>YM# 1234-234234 </li>

Many thanks for your help someone!

Rich

Answer 1

Try this:
(<li>[^#<>]*?# *)([\\d\\-]+)\\b
and get the result in $2 .

Answer 2

(?!<li>YM#\\s)([\\d-]+)

http://regexr.com?30ng5

This will match the numbers.

Answer 3

currently, your regex only matches if there is a single number before the dash and a single number after it. This will let you get one or more numbers in each place instead:

/YM#[0-9]+-[0-9]+/g

Then, you also need to capture it, so we use a cgroup to captue it:

/YM#([0-9]+-[0-9]+)/g

Then we need to refer to the capture group again, so we use the following code instead of the String.match

var regex = /YM#([0-9]+-[0-9]+)/g;
var match = regex.exec(text);
var id = match[1];
 // 0: match of entire regex
 // after that, each of the groups gets a number