假设我有以下HTML:
<img id="foo" src="bar1.jpg"/>
我想将src
切换为bar2.jpg
我可以这样做吗?
$("#foo").attr("src", "bar2.jpg");
或者我必须这样做吗?
$("#foo").removeAttr("src");
$("#foo").attr("src", "bar2.jpg");
谢谢!
答案 0 :(得分:48)
执行此操作时:
$("#foo").attr("src", "bar2.jpg");
之前的src
已被替换。
所以你不需要:
$("#foo").removeAttr("src");
答案 1 :(得分:4)
只需.attr('src', 'foo')
,因为您无论如何都要分配src
。如果您不完全需要,请仅删除该属性。
答案 2 :(得分:4)
第一个很好,没有理由先删除它。
$("#foo").attr("src", "bar2.jpg");
$。attr既可以获取现有属性又可以更改它(取决于是否有一个或两个参数)。您的情况正是他的第二个功能所针对的,属性'src'并不特殊。
答案 3 :(得分:0)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<style>
.main{
position:relative;
}
.second{
position:absolute;
top:20px;
left:720px;
}
.third{
position:absolute;
top:290px;
left:720px;
}
.fourth{
position:absolute;
top:100px;
left:1030px;
}
.firstarrow{
position:absolute;
top:20px;
left:1100px;
}
.secondarrow{
position:absolute;
top:20px;
left:1030px;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(".firstarrow").on('click', function() {
var pos1 = $('.first img').attr('src');
var pos2 = $('.second img').attr('src');
var pos3 = $('.third img').attr('src');
var pos4 = $('.fourth img').attr('src');
$('.third img').attr('src', pos1);
$('.fourth img').attr('src', pos3);
$('.second img').attr('src', pos4);
$('.first img').attr('src', pos2);
});
$(".secondarrow").on('click', function() {
var pos1 = $('.first img').attr('src');
var pos2 = $('.second img').attr('src');
var pos3 = $('.third img').attr('src');
var pos4 = $('.fourth img').attr('src');
$('.third img').attr('src', pos4);
$('.fourth img').attr('src', pos2);
$('.second img').attr('src', pos1);
$('.first img').attr('src', pos3);
});
});
</script>
</head>
<body>
<div class="main">
<div class="first">
<img src="img1.jpg" alt="" width="700" height="511" />
</div>
<div class="second">
<img src="img2.jpg" alt="" width="300" height="250" />
</div>
<div class="third">
<img src="img3.jpg" alt="" width="300" height="250" />
</div>
<div class="fourth">
<img src="img4.jpg" align="" width="300" height="400" />
</div>
<a href="#"><div class="firstarrow"><img src="ar1.jpg" width="48" height="48" /></div></a>
<a href="#"><div class="secondarrow"><img src="ar2.jpg" width="48" height="48" /></div></a>
</div>
</body>
</html>
答案 4 :(得分:0)
即使是mediaelement
玩家,也有:
$("#player5").attr("poster", "/images/poster/Azadi.jpg");