基于文本内容从jquery对象中过滤元素 [英] Filter elements out of a jquery object based on text content
问题描述
我正在尝试使用包含
与'this'关键字,但它是一个错误。
JS
$(function(){
var check = $('ul' ).find('li')。filter(function(){
return $(this:contains('two'))。css('color','red')
})
})
HTML
< ul>
< li id =one> one< / li>
< li id =two> two< / li>
< li id =one> one< / li>
< li id =two> two< / li>
< li id =one> one< / li>
< li id =two> two< / li>
< li id =one> one< / li>
< li id =two> two< / li>
< li id =one> one< / li>
< li id =two> two< / li>
< / ul>
这是你要找的? >
$(function(){
$('ul')。find('li')。filter(function(){
return
})
(c)('color','red'
或者在元素中的任何位置匹配(而不仅仅是两):
$(function(){
$('ul')。find('li')。filter(function(){
return /two/.test (this.innerHTML);
})。css('color','red')
})
另外,如果重要的是...链接方法( .find()。filter()
)似乎比使用包含
更快:
你的id应该是唯一的 - 但我假设它只是复制/粘贴示例代码,并且您实际上没有重复的ID在您的实际代码。
I am trying to use contains
with 'this' keyword, but it is giving an error.
JS
$(function(){
var check=$('ul').find('li').filter(function(){
return $(this:contains('two')).css('color','red')
})
})
HTML
<ul>
<li id="one">one</li>
<li id="two">two</li>
<li id="one">one</li>
<li id="two">two</li>
<li id="one">one</li>
<li id="two">two</li>
<li id="one">one</li>
<li id="two">two</li>
<li id="one">one</li>
<li id="two">two</li>
</ul>
Is this what you are looking for?
$(function () {
$('ul').find('li').filter(function () {
return this.innerHTML == 'two';
}).css('color','red')
})
Or to match it anywhere in the element (rather than only "two" being within it):
$(function () {
$('ul').find('li').filter(function () {
return /two/.test(this.innerHTML);
}).css('color','red')
})
Also, if it matters... chaining methods (.find().filter()
) seems to be faster than using contains
:
Performance test created for this specifically
Another related test
And your id's should be unique - but I'm assuming that it is just copy/pasting for sample code and that you don't actually have duplicate id's in your actual code.
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