HTML 点击锚文本更改文本内容

Question

我正在尝试创建一个 javascript 下拉菜单。
因为我想添加一个功能，比如当用户单击锚标记时，我想根据下拉打开状态将文本更改为（显示更多或显示更少）。
我试过只是没有用或无法在锚标记内完成。
有什么想法吗？

Answer 1

你可以这样试试：

来自该站点的引用：http://code-tricks.com/jquery-read-more-less-example/

$(document).ready(function() {
    // Configure/customize these variables.
    var showChar = 100; // How many characters are shown by default
    var ellipsestext = "...";
    var moretext = "Show more >";
    var lesstext = "Show less";
    

    $('.more').each(function() {
        var content = $(this).html();
 
        if(content.length > showChar) {
 
            var c = content.substr(0, showChar);
            var h = content.substr(showChar, content.length - showChar);
 
            var html = c + '<span class="moreellipses">' + ellipsestext+ '&nbsp;</span><span class="morecontent"><span>' + h + '</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;
    });
});

.morecontent span {
    display: none;
}
.morelink {
    display: block;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
  <head>
    <title>jQuery Read More/Less Toggle Example</title>
  </head>
  <body>
    <span class="more">
      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 dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    </span>
    <br><br>
    <div class="more">
      Morbi placerat imperdiet risus quis blandit. Ut lobortis elit luctus, feugiat erat vitae, interdum diam. Nam sit amet arcu vitae justo lacinia ultricies nec eget tellus. Curabitur id sapien massa. In hac <a href="#">habitasse</a> platea dictumst. Integer tristique leo consectetur libero pretium pretium. Nunc sed mauris magna. Praesent varius purus id turpis iaculis iaculis. Nulla <em>convallis magna nunc</em>, id rhoncus massa ornare in. Donec et feugiat sem, ac rhoncus mauris. Quisque eget tempor massa.
    </div>
  </body>
</html>

Answer 2

这里是代码和DEMO

$('.open_drop_down').click(function(){
    var text = ($(this).text() === 'Show more') ? 'Show less' : 'Show more';
    $(this).text(text);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<a href="#tagged" class="open_drop_down">Show more</a>

HTML 点击锚文本更改文本内容

HTML anchor text change text content on click

html

javascript

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anchor

onclick