JQuery: select paragraphs that only contain “ ” [duplicate]

问题

Possible Duplicate:
Remove elements with only a   space using jQuery

Wordpress does this thing with adding <p> </p> when doing a line-break in the backend.

I wonder if it is possible to select those p's somehow with jquery.

I guess empty() wouldn't work since it isn't really empty but contains a  . But contains() wouldn't probably work either since a lot of other paragraphs also contain a space, right?

I only want to select those paragpahs that have only this " " inside.

UPDATE

I should have mentioned that I don't want to remove the ps but add a class to it.

回答1:

Add this to your functions.php file if you have access to the theme files.

function user_content_replace($content) {
    return str_replace('<p>&nbsp;</p>','<p class="example">&nbsp;</p>',$content);
}
add_filter('the_content','user_content_replace', 99);

I made it insert a class instead of removing.

回答2:

This would work to select the paragraphs in question:

$("p").filter(function() {
    return $.trim($(this).html()) == '&nbsp;';
});

回答3:

You can do something like this

$(document).ready(function(){ 
            $("p").each(function(){
                if($(this).html()=="&nbsp;") {
                    alert($(this).attr('id'));
                }   
            });
        });

And the HTML I used was

<p id="test" class="les">&nbsp;</p>
<p class="les" id="test1">aaaa &nbsp;</p>

So it should alert only p with id test

Hope this helps

来源：https://stackoverflow.com/questions/14703924/jquery-select-paragraphs-that-only-contain-nbsp

标签

javascript

jquery

jquery-selectors