Question

我有以下代码

<div class="row">
    <div class="col-md-4 product-image">
        <img width="295" height="982" src="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-1.png" class="attachment-post-thumbnail size-post-thumbnail wp-post-image" alt="" srcset="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-2.png 295w, http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-2-90x300.png 90w" sizes="(max-width: 295px) 100vw, 295px"> </div>
    <div class="col-md-8">
        <h4 class="ltru-underline ltru-inline">Product 4</h4>
        <p></p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing 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.</p>
        <p></p>
        <div class="product-thumbs">
            <a href="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-1.png">
                <img src="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-1.png" alt="">
            </a>
            <a href="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-2.png">
                <img src="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-2.png" alt="">
            </a>
            <a href="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-3.png">
                <img src="http://localhost/2017/ltru/wp-content/uploads/2017/03/IMG_8576-copy-3.png" alt="">
            </a>
            <div class="clearfix"></div>
        </div>
    </div>
</div>

我正在尝试使用以下js更改.product-image img src属性：

$('.product-thumbs a').on('click', function(e){
        e.preventDefault();
        var src = $(this).attr('href');
        var main_img = $(this).closest('.product-detail').find('.product-image img');

        main_img.attr('src', src);
});

我可以从JS控制台看到.product-image img src在我点击产品大拇指时正在发生变化，但图像没有变化。 srcset导致此问题吗？

Answer 1

尝试更改srcset属性以及src属性：

$('.product-thumbs a').on('click', function(e){
        e.preventDefault();
        var src = $(this).attr('href');
        var main_img = $(this).closest('.product-detail').find('.product-image img');

        main_img.attr('src', src);
        main_img.attr('srcset', src); // <-- changing srcset attribute
});

Answer 2

我认为您的img选择不正确。实际上.product-image img将为您提供.product-image中的所有图片以及您的拇指，因此请在>之间使用.product-image img尝试

var main_img = $(this).closest('.product-detail')
           .find('.product-image > img'); // now it will give you a single object and src will be applied to that one only.

更好的选择可以是，使用img的类名，这样就可以轻松获得该图像，

var main_img = $(this).closest('.product-detail')
           .find('.product-image img.wp-post-image'); // no need to use > in this case

当有srcset时，更改图像src不起作用

2 个答案: