SO - 15846603

by Arun P Johny

HTML

<ul class="datas">
    <li class="data-smh1">abc</li>
    <li class="data-smh1">dd</li>
    <li class="data-smh1">cc</li>
    <li class="data-sc33">abc</li>
    <li class="data-sc33">dd</li>
    <li class="data-nn61">abc</li>
    <li class="data-nn61">dd</li>
</ul>

JavaScript

$(function(){
    $('.datas').children().each(function(i, v){
        var $this = $(this);
        $this.siblings('.' + $this.attr('class')).remove()
    });
})