JQuery / JS removing / trimming html trailing strings?

Question

I'm looking for some ideas for the most efficient method of removing trailing tag the html < br / "> using javascript or jquery.

REGULATIONS:

• Br, front and end, should be removed.
• It must remove non-closing and self-closing br-tags.
• All br in textual content should remain intact.

---

HTML:

<div class="generatedContent">
    <br>My awesome content.
    <br><br>Some More awesome content.
    <br>
    <br>
    <br>I still need the content written here<br/>
    <br>
    <br>
    <br>
    <br>
    <br>
    <br>
</div>

---

DESIRED EXIT:

<div class="generatedContent">
    My awesome content.
    <br><br>Some More awesome content.
    <br>
    <br>
    <br>I still need the content written here
</div>

Answer 1

I can’t understand why you want to use regular expressions for this, like most answers. Using DOM methods here is easy:

function isBrOrWhitespace(node) {
    return node && ( (node.nodeType == 1 && node.nodeName.toLowerCase() == "br") ||
           (node.nodeType == 3 && /^\s*$/.test(node.nodeValue) ) );
}

function trimBrs(node) {
    while ( isBrOrWhitespace(node.firstChild) ) {
        node.removeChild(node.firstChild);
    }
    while ( isBrOrWhitespace(node.lastChild) ) {
        node.removeChild(node.lastChild);
    }
}

$(".generatedContent").each( function() {
    trimBrs(this);
} );

Answer 2

:

var everything = $('.generatedContent').contents();
for(var i=everything.length-1;i>0;i--)
{
    if((everything.get(i).tagName == 'BR'
           && everything.get(i-1).tagName == 'BR')
        || (everything.get(i).textContent.match(/\w/)==null))
        $(everything.get(i)).remove();
    else
        break;
}

, FF IE7, .

Answer 3

, , :

$('.generatedContent').each(function() {
    var str = $(this).html();
    var regex1 = /^([\n ]*)(<br.*?>)*/;
    var regex2 = /(<br.*?>)*([\n ]*)$/;
    str = str.replace(regex1,'');
    str = str.replace(regex2,'');
    $(this).html(str);
})

Answer 4

. HTML Content :

s = s.replace(/^(\s*<br\s*\/?>)*\s*|\s*(<br\s*\/?>\s*)*$/g, '')

, JS, , , .

Answer 5

, Firefox. , , . .

var firstValidTextNode = -1;
var lastValidTextNode = -1;
$('.generatedContent').contents().each(function(index){
    if (this.nodeType != 1 && $.trim($(this).text()).length) {
        if (firstValidTextNode == -1) firstValidTextNode = index;
        lastValidTextNode = index;
    }
});

if (lastValidTextNode != -1 && firstValidTextNode != -1)
    $('.generatedContent').contents().slice(0, firstValidTextNode).remove().end().slice(lastValidTextNode + 1).remove();