使用 jQuery 更新数据属性的值
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Updating the value of data attribute using jQuery
提问by Ibrahim Azhar Armar
I have the following HTML code:
我有以下 HTML 代码：
<a class="toggle" href="#toggle">
<img src="app/css/images/tock.png" alt="No" data-id="4" data-block="1">
</a>
I want to update the value of the srcand data-blockattributes using jQuery. How do I do this?
我想使用 jQuery更新src和data-block属性的值。我该怎么做呢？
Update:As I have many image elements, I want to update the value of a specific image by using data-id.
更新：由于我有很多图像元素，我想使用data-id.
回答by MarioRicalde
$('.toggle img').data('block', 'something');
$('.toggle img').attr('src', 'something.jpg');
Use jQuery.dataand jQuery.attr.
I'm showing them to you separately for the sake of understanding.
为了大家理解，我分别给大家展示一下。
回答by JP Hellemons
$('.toggle img').each(function(index) {
if($(this).attr('data-id') == '4')
{
$(this).attr('data-block', 'something');
$(this).attr('src', 'something.jpg');
}
});
or
或者
$('.toggle img[data-id="4"]').attr('data-block', 'something');
$('.toggle img[data-id="4"]').attr('src', 'something.jpg');
回答by Alp Altunel
I want to change the width and height of a div. data attributes did not change it. Instead I use:
我想更改 div 的宽度和高度。数据属性没有改变它。相反，我使用：
var size = $("#theme_photo_size").val().split("x");
$("#imageupload_img").width(size[0]);
$("#imageupload_img").attr("data-width", size[0]);
$("#imageupload_img").height(size[1]);
$("#imageupload_img").attr("data-height", size[1]);
be careful:
当心：
$("#imageupload_img").data("height", size[1]); //did not work
did not set it
没有设置
$("#imageupload_img").attr("data-height", size[1]); // yes it worked!
this has set it.
这已经设置了。
回答by Paul Verbeek-Mast
$('.toggle img').data('block', 'something').attr('src', 'something.jpg');
