在Javascript Regex中，如何匹配哈希标签，但不能与HTML代码匹配？

Question

This is how I get the tags of a body of text.

var tags =  body.match(/#([a-z0-9]+)/gi);

However, if the sentence is:

The brown #fox jumped over ‘ fence.

The regex above will treat "8216;" as a tag, which is what I do not want. I only want "fox" as a tag.

Note: I just want a basic regex solution.

Answer 1

Try this one:

/(^#|\s#)([a-z0-9]+)/gi

LIVE DEMO: http://jsfiddle.net/DerekL/NpjyR/

or this:

/(^#|[^&]#)([a-z0-9]+)/gi   //this will exclude every &#

Answer 2

Assuming you have access to the DOM, you could use the DOM to decode the HTML and then match on the text content:

var temp = document.createElement('div');
temp.innerHTML = body;
var tags = temp.textContent.match(/#([a-z0-9]+)/gi);

Answer 3

试试这个：

#([a-z0-9]+)\b(?!;)