CODEWITHSUNDEEP
javascriptjqueryhtmlregex
ArVan
ArVan

Reputation: 4275

Remove all tags in html string except <a>

I'v got some html which I must clear from all tags except one concrete <a> with known class. Here is the html:

var string = '<span class="so_sentence"><span> Some text <a class="so_footnote-ref" href="#footnote-104008-4" id="footnote-104008-4-backlink">[1]</a></span></span>';

I have JQuery attached, so I get the jQuery object of the string.

var html = $(string);

Now I have to clear the string from all the span and probably other tags, except this <a>:

<a class="so_footnote-ref" href="#footnote-104008-4" id="footnote-104008-4-backlink">[1]</a>

So my final string should be:

'Some text <a class="so_footnote-ref" href="#footnote-104008-4" id="footnote-104008-4-backlink">[1]</a>'

Also it must be possible to call this function on the result, so it must be of appropriate type:

function _trim(string){
    return string.replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g,'').replace(/\s+/g,' ');
}

Upvotes: 2

Views: 3369

Answers (2)

Marcel
Marcel

Reputation: 375

Here's a function I found for you:

You can read more about this at: http://phpjs.org/functions/strip_tags/

Javascript:

var ret = strip_tags('<p>Kevin</p> <br /><b>van</b> <i>Zonneveld</i>', '<i><b>');

// returns: 'Kevin <b>van</b> <i>Zonneveld</i>'

function strip_tags (input, allowed) {
  allowed = (((allowed || "") + "").toLowerCase().match(/<[a-z][a-z0-9]*>/g) || []).join(''); // making sure the allowed arg is a string containing only tags in lowercase (<a><b><c>)
  var tags = /<\/?([a-z][a-z0-9]*)\b[^>]*>/gi,
    commentsAndPhpTags = /<!--[\s\S]*?-->|<\?(?:php)?[\s\S]*?\?>/gi;
  return input.replace(commentsAndPhpTags, '').replace(tags, function ($0, $1) {
    return allowed.indexOf('<' + $1.toLowerCase() + '>') > -1 ? $0 : '';
  });
}

Upvotes: 2

HarryFink
HarryFink

Reputation: 1010

Try this:

$(string).find(':not(a)').contents().unwrap()

This will vorky with every piece of html code.

Example: http://jsfiddle.net/E3RWL/1/

Upvotes: 6

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