javascript - 鼠标悬停时在 jQuery 中更改数据属性的背景图像。

Question

如题。有些东西不起作用...我想将鼠标悬停在链接上并更改 div 元素的背景图像。总是在不同的图片上，这是在 data-rhomboid-img 中设置的。

<div id="img-nav-rhomboid" class="nav-rhomboid"></div>
            <ul class="menu-list"> 
                <li><a href="#" data-rhomboid-img="img/example1.jpg">A</a></li>
                <li><a href="#" data-rhomboid-img="img/example2.jpg">B</a></li>
            </ul>

.nav-rhomboid{
    background: url(../img/nav-bg.png) no-repeat center center;
    display: flex;
    align-items: center;
}

 $('li a').mouseover(function () {
    var rhomboidImg = $(this).data('rhomboid-img');

    $('#img-nav-rhomboid').each(function () {
        $(this).css('background', $(this).attr(rhomboidImg));
    });
});

Answer 1

尝试使用这行代码$('#img-nav-rhomboid').css('background', 'url(' + rhomboidImg + ') no-repeat');

$('li a').mouseover(function() {
  var rhomboidImg = $(this).data('rhomboid-img');
  $('#img-nav-rhomboid').css('background', 'url(' + rhomboidImg + ') no-repeat');
});

.nav-rhomboid {
  background: url('http://s7d2.scene7.com/is/image/PetSmart/PB0101_HERO-Dog-Toys-20160818?$sclp-banner-main_large$') no-repeat center center;
  display: flex;
  align-items: center;
}

#img-nav-rhomboid {
  height: 200px;
  width: 200px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="img-nav-rhomboid" class="nav-rhomboid"></div>
<ul class="menu-list">
  <li><a href="#" data-rhomboid-img="https://images-na.ssl-images-amazon.com/images/G/01/img15/pet-products/small-tiles/23695_pets_vertical_store_dogs_small_tile_8._CB312176604_.jpg">A</a></li>
  <li><a href="#" data-rhomboid-img="img/example2.jpg">B</a></li>
</ul>