Javascript 如何使用jQuery获取图像ID？
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How to get image id using jQuery?
提问by gautamlakum
I have written code like this. <img id='test_img' src='../../..' />
我写过这样的代码。 <img id='test_img' src='../../..' />
I want to get the id of this image on image load like,
我想在图像加载时获取此图像的 ID，例如，
$(img).load(function() {
// Here I want to get image id i.e. test_img
});
Can you please help me?
你能帮我么？
Thanks.
谢谢。
回答by Mouhannad
$(img).load(function() {
var id = $(this).attr("id");
//etc
});
good luck!!
祝你好运！！
edit:
编辑：
//suggested by the others (most efficient)
var id = this.id;
//or if you want to keep using the object
var $img = $(this);
var id = $img.attr("id")
回答by Andy E
Don't use $(this).attr('id'), it's taking the long, inefficient route. Just this.idis necessary and it avoids re-wrapping the element with jQuery and the execution of the attr()function (which maps to the property anyway!).
不要使用$(this).attr('id')，这是一条漫长而低效的路线。Justthis.id是必要的，它避免了用 jQuery 重新包装元素和执行attr()函数（无论如何都映射到属性！）。
$(img).load(function() {
alert(this.id);
});
回答by gautamlakum
$(function() {
$('img#test_img').bind('load', function() {
console.log(this.id); //console.log($(this).attr('id'));
});
});
回答by Gazler
$(img).load(function() {
alert($(this).attr('id'));
});
