将div展开为“阅读更多”

Question

I come across a problem in my site to which I am finding a solution. Posts are fetched from the MySQL database. If it contains a few lines,it is displayed completely.But,if it contains too many lines (thus taking more space on the browser screen),then I want it to be displayed as a single line followed by dots (for example, your too long posts....) with a "see more" option by clicking which the entire post is displayed (as seen in facebook,twitter etc). Is it a client-side solution by javascript or jquery or can be handled server-side by PHP. Your advice is much appreciated!

The entire post is fetched from MySQL and I straightway echo it:

<?php
 //code
 while($row=mysql_fetch_array($result))
 {
   echo $row['posts'];
 }
?>

At this moment I simply fetch the entire post from database and echo it.I want here a javascript solution to do the rest.

Answer 1

You can do it with jquery :-

<div class="columns">
    your text goes here. Try long text here....
</div>

 a.morelink {
        text-decoration: none;
        outline: none;
    }

    .morecontent span {
        display: none;
    }

    .comment {
        width: 400px;
        background-color: #f0f0f0;
        margin: 10px;
    }

<script>
var showChar = 120;
        var ellipsestext = "...";
        var moretext = "more";
        var lesstext = "less";

        $(".columns").each(function () {
            var content = $(this).html();

            if (content.length > showChar) {
                var first = content.substr(0, showChar);
                var second = content.substr(showChar - 1, content.length - showChar);

                var html = first + '<span class="moreellipses">' + ellipsestext+ '&nbsp;</span><span class="morecontent"><span>' + second + '</span>&nbsp;&nbsp;<a href="" class="morelink">' + moretext + '</a></span>';

                $(this).html(html);
            }
        });

        $(".morelink").click(function(){
            if($(this).hasClass("less")) {
                $(this).removeClass("less");
                $(this).html(moretext);
            } else {
                $(this).addClass("less");
                $(this).html(lesstext);
            }
            $(this).parent().prev().toggle();
            $(this).prev().toggle();
            return false;
        }); 
</script>

Answer 2

HTML & PHP :

<?php
$text = '. . .';
$limit = 100;
?>
<div class="text">
    <?php
    if (strlen($text) < $limit) {
        echo $text;
    } else {
        echo substr($text, 0 , $limit);
        echo "<br/><a href='#' onclick='showMore()'>read more</a>";
    }
    ?>
</div>

jQuery :

<script>
    function showMore() {
        var text = '<?php echo $text; ?>'
        $(".text").html(text);
    }
</script>

Answer 3

you can try this.

<?php
    $str = 'simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's';
    $limit = 40;
    if(strlen($str)>$limit){
        $stringCut = substr($str, 0, $limit);
        $serRpos = strrpos($stringCut, ' ');
        $first_part = substr(substr($str, 0, $limit), 0,$serRpos);
        $last_part = substr($str,$serRpos);
        echo $first_part;
        echo '<span style="cursor: pointer" onclick="showText(this)"> ...<span class="hide-text" style="display: none;">'.$last_part.'</span></span>';
    }
    else{
        echo $str;
    }
?>

and the script(i used jquery)

<script type="text/javascript">
function showText(e){
$(e).html($(e).find('.hide-text').html());
}
</script>