<span> jQuery .click()无效

Question

所以,我在一个范围内创建了一个删除"按钮",但由于某种原因,我无法启动.click().有任何想法吗？我是jQuery的新手,我觉得这很明显.我在Chrome和Safari中测试过没有运气.

CSS:

.delete_button {
    cursor:pointer;
    color: #fff;
    border: 1px solid #FFF;
    border-radius: 15px;
    background: #AAA;
    font-size: 8px;
    line-height: 0px;
    padding: 0px 2px 0px 2px;
}

HTML/PHP:

<span class="delete_button" id="delete_<? echo $some_id; ?>">X</span>

jQuery的:

$(document).ready(function() {
    $('.delete_button').click(function() {
            var transaction_id = $(this).attr('id').replace('delete_','');
            alert("Delete transaction #" + transaction_id);
            return false;
        });
});

Answer 1

使用.on()

您的span是动态添加的,因此在DOM就绪或页面加载时不会出现.

所以你必须使用事件委派

句法

$( elements ).on( events, selector, data, handler );

像这样

$(document).on('click','.delete_button',function(){
    // code here
});

要么

$('parentElementPresesntAtDOMready').on('click','.delete_button',function(){
   // code here
});

你的代码变成了

$(document).ready(function () {
    $(document).on('click', '.delete_button', function () {
        var transaction_id = $(this).attr('id').replace('delete_', '');
        alert("Delete transaction #" + transaction_id);
        return false;
    });
});  

Answer 2

It seems like the span is dynamically created, you need to use event delegation. Bind it to the closest static parent or document

$(document).on('click','.delete_button',function(){
   /*Your code*/
});