jQuery Get Image Dimensions, Apply To Div
基于这篇文章,我想将.each()方法添加到函数中,因为我想将它应用于多个DIV。无法评论,因为声誉太低。
var img = $(".brand > img");
$( ".brand" ).each(function() {
$( this ).css({width:img.width(), height:img.height()});
});
这就是我得到的。如何在每种情况下缓存变量?我是菜鸟...... Sry
THANX第一种方法正在运作!
答案 0 :(得分:0)
我想你可以这样做:
var img = $(".brand > img"); //Possibly it's an array?
$( ".brand" ).each(function(index) {
$( this ).css({width:img[index].width(), height:img[index].height()});
});
或者也许:
$( ".brand" ).each(function() {
var img = $( this ).find('img');
$( this ).css({width:img.width(), height:img.height()});
});
答案 1 :(得分:0)
正如Hubert的评论中所指出的,如果每个.brand容器有多个图像,容器将占用容器中最后一个图像的大小,代码将每个.brand运行多次,可能不会使这个解决方案最好用。
$(".brand > img").each(function () {
$(this).parent().css({ width: this.width, height: this.height });
// or
// img.closest('div').css({ width: this.width, height: this.height }); if its not the direct parent you are after (the '.brand > img' however only finds images thats the first child to a .brand)
});
答案 2 :(得分:0)
查询的css()方法适用于选择的所有元素,因此您的代码可以更好地编写为:
var img = $(".brand > img");
var w = img.width();
var h = img.height();
$(".brand").css({width: w, height: h});
<强>无论其强>
如果你想给每个.brand
个人的大小包含img:
$(".brand").each(function() {
var brand = $(this);
var img = brand.find("img").first();
if (img.length) {
// wait for the image to load or it might have no dimensions
img.load(function() {
brand.css("width", img.width()).css("height", img.height())
});
}
});
答案 3 :(得分:0)
我建议,假设图像存在于DOM就绪(以后不加载,带有ajax),并且每个.brand
元素有一个图像元素:
var images = $('.brand img').get();
$('.brand').css({
'width' : function(i){
return images[i].naturalWidth;
/* or, if you're specifying an alternate width for the images:
return images[i].width;
*/
},
'height' : function(i){
return images[i].naturalHeight;
/* or, if you're specifying an alternate height for the images:
return images[i].height;
*/
});
var images = $('.brand img').get();
console.log(images);
$('.brand').css({
'width': function(i) {
return images[i].naturalWidth;
},
'height': function(i) {
return images[i].naturalHeight;
}
});
li {
list-style-type: none;
border: 2px solid #f00;
margin: 0.5em;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>
<ul>
<li class="brand">
<img src="http://placekitten.com/150/150" alt="" />
</li>
<li class="brand">
<img src="http://placekitten.com/140/200" alt="" />
</li>
<li class="brand">
<img src="http://placekitten.com/180/130" alt="" />
</li>
<li class="brand">
<img src="http://placekitten.com/150/130" alt="" />
</li>
<li class="brand">
<img src="http://placekitten.com/200/135" alt="" />
</li>
</ul>
</div>
参考文献: