Javascript jQuery:选择非空的数据属性?
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jQuery: Select data attributes that aren't empty?
提问by Shpigford
I'm trying to select all elements that have a data-go-to
attribute that is not empty.
我正在尝试选择具有data-go-to
非空属性的所有元素。
I've tried $('[data-go-to!=""]')
but oddly enough it seems to be selecting every single element on the page if I do that.
我已经尝试过,$('[data-go-to!=""]')
但奇怪的是,如果我这样做,它似乎会选择页面上的每个元素。
采纳答案by Benjamin Oman
try
尝试
$(':not([data-go-to=""])')
UPDATE:
更新:
For the sake of not leading anyone astray, this answer will work in older versions of jQuery but is not future-proof. Since @gmo and @siva's answers both seem to be working with later versions I defer to (and encourage you to upvote) their answers....and of course hope you have a fantastic day.
为了不让任何人误入歧途,这个答案将适用于旧版本的 jQuery,但不是面向未来的。由于@gmo 和@siva 的答案似乎都适用于更高版本,因此我遵循(并鼓励您投票)他们的答案……当然希望您有美好的一天。
回答by gmo
Just as further reference, and an up-to-date(may'14)(aug'15)(sep'16)(apr'17)(mar'18)(mar'19)(may'20)...
Answer that works with:
作为进一步的参考,以及最新的(may'14) (aug'15) (sep'16) (apr'17) (mar'18) (mar'19)( may'20)...
答案适用于:
Empty strings:
If the
attr
mustexist & couldhave any value (or none at all)
空字符串:
如果必须存在并且可以有任何值(或根本没有)
attr
jQuery("[href]");
Missing attributes:
If
attr
couldexist & if exist, musthave some value
缺少属性:
如果可以存在&如果存在,必须有一些价值
attr
jQuery("[href!='']");
Or both:
If
attr
mustexist & has to havesome value...
或两者:
如果必须存在并且必须具有一定的价值...
attr
jQuery("[href!=''][href]");
PS: more combinations are possible...
PS:更多组合是可能的...
Check this test in jsFiddlefor examples:
在jsFiddle 中检查此测试以获取示例:
jQuery v1.11.0 ->
jsFiddle online testjQuery v2.1.0 ->
jsFiddle online testjQuery v2.1.3 ->
jsFiddle online testjQuery v3.0.0-alpha1 ->
jsFiddle online testjQuery v3.1.1 Slim ->
jsFiddle online testjQuery v3.2.1 ->
jsFiddle online testjQuery v3.3.1 ->
jsFiddle online testjQuery v3.4.1 ->
jsFiddle online testLast jQuery version available in jsFiddle at may 28'20jQuery Edge ->
jsFiddle online testjQuery edge version(use with caution)
jQuery v1.11.0 ->
jsFiddle online testjQuery v2.1.0 ->
jsFiddle online testjQuery v2.1.3 ->
jsFiddle online testjQuery v3.0.0-alpha1 ->
jsFiddle online testjQuery v3.1.1 Slim ->
jsFiddle online testjQuery v3.2.1 ->
jsFiddle online testjQuery v3.3.1 ->
jsFiddle online testjQuery v3.4.1 ->
jsFiddle online testjsFiddle 中的最新 jQuery 版本于 2020 年 5 月 28 日发布jQuery Edge ->
jsFiddle online testjQuery edge 版本(慎用)
Or here in SO with this Code Snippet.
或者在这里使用此代码片段。
* Snippet is running jQuery v2.1.1
* 代码段正在运行 jQuery v2.1.1
jQuery('div.test_1 > a[href]').addClass('match');
jQuery('div.test_2 > a[href!=""]').addClass('match');
jQuery('div.test_3 > a[href!=""][href]').addClass('match');
div,a {
display: block;
color: #333;
margin: 5px;
padding: 5px;
border: 1px solid #333;
}
h4 {
margin: 0;
}
a {
width: 200px;
background: #ccc;
border-radius: 2px;
text-decoration: none;
}
a.match {
background-color: #16BB2A;
position: relative;
}
a.match:after {
content: 'Match!';
position: absolute;
left: 105%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="test_1">
<h4>Test 1: jQuery('a[href]')</h4>
<a href="test">href: test</a>
<a href="#">href: #</a>
<a href="">href: empty</a>
<a>href: not present</a>
</div>
<div class="test_2">
<h4>Test 2: jQuery('a[href!=""]')</h4>
<a href="test">href: test</a>
<a href="#">href: #</a>
<a href="">href: empty</a>
<a>href: not present</a>
</div>
<div class="test_3">
<h4>Test 3: jQuery('a[href!=""][href]')</h4>
<a href="test">href: test</a>
<a href="#">href: #</a>
<a href="">href: empty</a>
<a>href: not present</a>
</div>
回答by Siva Charan
$('[data-go-to!=""]:[data-go-to]').each(function() {
// Do Your Stuff
});?
回答by Jelgab
Has 'data-attributename' and its value is not empty:
具有 'data-attributename' 并且其值不为空:
$('[data-attributename]:not([data-attributename=""])')
Has 'data-attributename' empty or not:
'data-attributename' 是否为空:
$('[data-attributename]')
回答by David says reinstate Monica
I'm not sure about a simple selector, but you could use filter()
:
我不确定一个简单的选择器,但你可以使用filter()
:
$('[data-go-to]').filter(
function(){
return ($(this).attr('data-go-to').length > 0);
});
References:
参考:
回答by Dhiraj
According to the documentationthis should do it
根据文档,这应该这样做
:not([attr="value"])
:not([attr="value"])
Hope this helps
希望这可以帮助
回答by adeneo
$('[data-go-to]').filter(function() {
return $(this).data('go-to')!="";
});
Using :not
, .not()
, :empty
etc will only check if the element itself is empty, not the data attribute. For that you will have to filter based on the data attributes value.
使用:not
,.not()
,:empty
等仅检查元素本身是空的,而不是数据属性。为此,您必须根据数据属性值进行过滤。
回答by Mardok
This works for me
这对我有用
$('[attributename]').filter('[attributename!=""]')
回答by V. Kovpak
This works for me:
这对我有用:
$('.data .title td[data-field!=""]')