Best way to add a lot of HTML to the page via JS?

Well, I'm creating a small social network (one page) and I wanted to know how to add a lot of html to the page. I'll explain better: I have a div called timeline that serves as a container and within it in thesis is to be added another div , the news feeds and publications; only this div is too large and a little complex to concatenate in a js variable and eventually use some function to add it. Is there a better way to do this?

HTML

<div class="wrap_ui" id="timeline">
            <div class="timeline_feed">
            <div class="feed_row">
                <div class="feed_info">
                    <img src="public/img/no_photo.png">
                </div>
                <div class="feed_info" style="font-weight: bold; color: #666;">
                    No name
                </div>
                <div class="feed_info">
                    "No status"
                </div>
            </div>
            <div class="feed_row">
                <article>
                    Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
                    tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
                    quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
                    consequat. Duis aute irure...
                </article>
            </div>
            <div class="feed_row" style="border-top: 1px solid #eee;">
                <div class="feed_opt">
                    <img src="public/img/icones/love-icon-hover.png">
                </div>
                <div class="feed_opt">
                    3k
                </div>
                <div class="feed_opt">
                    <img src="public/img/icones/share-icon.png">
                </div>
                <div class="feed_opt">
                    4k
                </div>
                <div class="feed_opt">
                    <img src="public/img/icones/comment-icon.png">
                </div>
                <div class="feed_opt">
                    34k
                </div>
            </div>
        </div>
        </div>

CSS

.timeline_feed{
    width: inherit;
    height: auto;
    margin-bottom: 10px;

    /*...*/
    background-color: white;
    border-radius: 2px;
    /*border-bottom: 1px solid #eee;*/
}

.feed_row{
    position: relative;
    padding: 5px;

    /*...*/
    background-color: inherit;
}

.feed_row > .feed_info{
    display: inline-block;


    /*...*/

}

.feed_row > .feed_info:first-child{ margin-right: 10px; }
.feed_row > .feed_info:last-child{ margin-left: 50px;   }


.feed_row > .feed_info > img{
    width: 4.3em;
    height: 4.3em;
    vertical-align: middle;

    /*...*/
    border-radius: 50%;

}

.feed_row > .feed_info > .feed_name_user{
    font-weight: 700;

    /*...*/
    color: #444;
}

.feed_row > .feed_info > .feed_status_user{
    color: #666;
}

.feed_row > article{
    padding: 20px 5px;
    word-spacing: 5px;
    margin-bottom: 10px;

    /*...*/
    color: #555;
    font-size: 17px;
}

.feed_row > .feed_opt{
    display: inline-block;
    padding: 5px;
    margin-right: 7px;

    /*...*/
    color: #666;

}

.feed_row > .feed_opt > img{
    width: 25px;
    height: 25px;
    margin-right: 8px;
    vertical-align: middle;
}