从字符串中为JavaScript中的正则表达式获取子字符串

Question

I have a string of the following form:

data-translate='view-7631b26ea80b1b601c313b15cc4e2ab03faedf30'>Avatar data

It can be in different languages, but in any case I need to get a string which is between the characters ' ' That is, in the example above, I need to get the following string:

view-7631b26ea80b1b601c313b15cc4e2ab03faedf30

Can I do this using the method string.replace(regexp, str) ?

I've highlighted the desired line using the following regular expression:

/'\b(.*)\b'/gm

Now, using the method string.replace I need to delete everything except that...

Got any suggestions?

Answer 1

Use match method.

var data = "data-translate='view-7631b26ea80b1b601c313b15cc4e2ab03faedf30'>Avatar data";
data = data.match(/'\b(.*)\b'/gm)

Answer 2

You have good solid anchor text in either side, so:

var match = /data-translate='([^']+)'/.exec(str);
var substr = match && match[1];

Live Example:

 var str = "data-translate='view-7631b26ea80b1b601c313b15cc4e2ab03faedf30'>Avatar data"; var match = /data-translate='([^']+)'/.exec(str); var substr = match && match[1]; document.body.innerHTML = "<pre>Got: [" + substr + "]</pre>"; 

But again, as I said in a comment, using a simple regular expression to extract information from HTML is usually doomed to fail . For instance, you probably don't want to match this:

<p>The string is data-translate='view-7631b26ea80b1b601c313b15cc4e2ab03faedf30'</p>

...and yet, a simple regex solution will do exactly that. To properly handle HTML, you must use a proper HTML parser.

Answer 3

您也可以尝试以下一种方法：

/\'([^\']+)\'/gm