javascript - 将点击功能委托(delegate)给附加的 div

Question

我无法理解如何将点击功能附加到附加部分内的元素。我查看了上一个问题的答案，但无法将其应用到我的代码中。谁能帮忙？我想要实现的目标:当用户点击新闻时，新闻提要会向下切换。可以单击看到的新闻部分以删除当前切换到新部分(音乐会)。

编辑:问题是“新闻提要”在容器内。当用户单击菜单选项卡时，box-toggle 1、2、3 等将删除容器的内容(新闻提要)并将其替换为新附加的 box-toggle。我试图让 news1clone 以同样的方式运行。删除内容(新闻提要)并附加适当的框切换。

 $('#news').click(function() {
     $('.nav li').removeClass('active');    
        $(this).addClass('active');
    $('.box-toggle').remove();
    $('.box-toggleclone').remove();
    $('.box-toggle1').remove();
    $('.box-toggle2').remove();
    $('.box-toggle3').remove();
    $('#box').removeClass('box-zoom');
    $('#box').addClass('box-reg');
    $('.placer2').append('<div class = "box-toggleclone">'+
        '<div class = "newsbodyclone">'+
        '<div class = "newsheaderclone"><h1>News</h1></div>'+
        '<div class = "news1clone">'+
                    '<div class = "news1clone-photo">'+
                    '</div>'+
                    '<div class = "news1clone-info">'+
                        '<p>MAY XX, 2015</p>'+
                        '<h2>OPENING<br>'+
                        'SPRING FASHION PARTY<h2>'+
                    '</div>'+
        '</div>'+
           '<div class = "news2clone">'+
                    '<div class = "news2clone-photo">'+
                    '<img src="album-cover/tyler.jpg" alt = "photo-carosel">'+
                    '</div>'+
                    '<div class = "news2clone-info">'+
                        '<p>MAY 28, 2015</p>'+
                        '<h2>TYLER THE CREATOR<br>'+
                        'Primavera Sound Concert<h2>'+
                    '</div>'+
        '</div>'+
           '<div class = "news3clone">'+
                    '<div class = "news3clone-photo">'+
                    '<img src="album-cover/jcole.jpg" alt = "photo-carosel">'+
                    '</div>'+
                    '<div class = "news3clone-info">'+
                        '<p>J. Cole, Latest album</p>'+
                        '<h2>2014 Forest Hills Drive<br>'+
                        '(2014)<h2>'+
                    '</div>'+
            '</div>'+
        '</div>'+
        '</div>');
$('.placer2').delegate('click','.news2clone',(function() {
         $('.box-toggle').remove();
        $('.box-toggleclone').remove();
        $('.box-toggle1').remove();
        $('.box-toggle2').remove();
        $('.box-toggle3').remove();
        $('#box').removeClass('box-zoom');
        $('#box').addClass('box-reg');
        $('.placer2').append('<div class = "box-toggle2">'+
            '<div class = "concert-body">'+
            '<div class = "concert1">'+
                        '<div class = "concert1-photo">'+
                        '<img src="album-cover/dmx.jpg" alt = "photo-carosel">'+
                        '</div>'+
                        '<div class = "concert1-info">'+
                            '<p>Sunday, May 24 2015</p>'+
                            '<h2>DMX CONCERT<br>'+
                            '<h2>'+
                        '</div>'+
                '</div>'+
                  '<div class = "concert2">'+
                        '<div class = "concert2-photo">'+
                        '<img src="album-cover/tyler.jpg" alt = "photo-carosel">'+
                        '</div>'+
                        '<div class = "concert2-info">'+
                            '<p>Thursday, May 28 2015</p>'+
                            '<h2>TYLER THE CREATOR<br>'+
                            'Primavera Sound<h2>'+
                        '</div>'+
                '</div>'+
            '</div>'+
            '</div>');
          })
        );
          });

Answer 1

我建议使用 jquery 的“on”方法而不是委托(delegate)。这里的技巧是设置正确的上下文。第一个选择器需要是页面加载时存在的元素，而不是 ajax 或稍后注入(inject)的元素。尝试添加“文档”作为上下文，它应该可以工作。

$(document).on('click','.news2clone',(function() {
// $(document) is your context and .news2clone would be the trigger inside that context.