blocks|key|1093111|text|我的建议是在css中添加一个类active：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1093112|.active+{
++++background-color:+rgb(0,+0,+250);++++++++
}|code-block|syntax|javascript|1093113|然后将active类添加到单击按钮中，并从其他按钮中删除该类：|1093114|$('#vimeo_player_button').click(function(){
++++$('#youtube_player').animate({
++++++++marginLeft:+'-1000px'
++++});
++++$('.active').removeClass('active');
++++$(this).addClass('active');
});

$('#youtube_player_button').click(function(){
++++$('#youtube_player').animate({
++++++++marginLeft:+'0'
++++});
++++$('.active').removeClass('active');
++++$(this).addClass('active');
});++++|1093115|更新Fiddle|1093116|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/Vrxv9/8/^0|F|6|0|0|3|6|0|0|0|8|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|16|8|@]|D|@$9|17|A|18|1|19]]|E|$]]|$1|Q|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

My suggestion is to add a class <code>active</code> to your css:

<pre><code>.active {
 background-color: rgb(0, 0, 250); 
}
</code></pre>

Then add <code>active</code>class to the clicked button as well as removing this class from other button:

<pre><code>$('#vimeo_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '-1000px'
 });
 $('.active').removeClass('active');
 $(this).addClass('active');
});

$('#youtube_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '0'
 });
 $('.active').removeClass('active');
 $(this).addClass('active');
}); 
</code></pre>

<a href="http://jsfiddle.net/Vrxv9/8/" rel="nofollow">Updated Fiddle</a>

blocks|key|1093152|text|当您打算使用赋值算子时，您使用了比较算子，将选择器作为字符串与jQuery对象进行比较是没有意义的：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1093153|if+('#youtube_player'+=+youtube)+{|code-block|syntax|javascript|1093154|另外，由于您只使用jQuery更改一个jQuery，所以您可以使用,而不是:将其分离。|style|CODE|1093155|if+('#youtube_player'+=+youtube)+{
++++$('#youtube_player_button').css('background-color',+'rgb(0,+0,+250)')
}+else{
++++$('#vimeo_player_button').css('background-color',+'rgb(0,+0,+250)')
};|1093156|最后，您应该按照A.Wolff在注释中所说的做，只需在单击按钮时添加一个类。|1093157|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Assignment_Operators|1|https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators^0|6|4|0|G|4|1|0|0|X|1|11|1|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]|$A|14|B|15|1|16]]|C|$]]|$1|D|3|E|5|F|7|17|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|18|8|@$A|19|B|1A|K|L]|$A|1B|B|1C|K|L]]|9|@]|C|$]]|$1|M|3|N|5|F|7|1D|8|@]|9|@]|C|$G|H]]|$1|O|3|P|5|6|7|1E|8|@]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]|Y|$5|T|U|V|C|$W|Z]]]]

You used the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Assignment_Operators" rel="nofollow">assignment operator</a>, when you meant to use the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Comparison_Operators" rel="nofollow">comparison operator</a>, and comparing a selector as a string to a jQuery object makes no sense:

<pre><code>if ('#youtube_player' = youtube) {
</code></pre>

Also, because you are only changing one <a href="http://api.jquery.com/css/" rel="nofollow">CSS property</a> with jQuery you separate it with <code>,</code> instead of <code>:</code>

<pre><code>if ('#youtube_player' = youtube) {
 $('#youtube_player_button').css('background-color', 'rgb(0, 0, 250)')
} else{
 $('#vimeo_player_button').css('background-color', 'rgb(0, 0, 250)')
};
</code></pre>

Lastly, you should do what A. Wolff said in the comments and just have a class that you add when you click the buttons.

blocks|key|369467|text|看看这个小玩意http://jsfiddle.net/Vrxv9/10/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|369468|我在这里所做的就是|369469|在youtube按钮上添加活动类|unordered-list-item|369470|在选定按钮上应用活动类|369471|移除hove效应(可选)|369472|代码|369473|$(document).ready(function(){

++++//+intialization
+++++$('#youtube_player_button').addClass("active");

++++$('#vimeo_player_button').click(function(){
++++++++$('#youtube_player').animate({
++++++++++++marginLeft:+'-1000px'
++++++++},1000,function(){
++++++++++++$('#youtube_player_button').removeClass("active");
++++++++++++$('#vimeo_player_button').removeClass("active");
++++++++++++$('#vimeo_player_button').addClass("active");
++++++++});+

++++});

++++$('#youtube_player_button').click(function(){
++++++++$('#youtube_player').animate({
++++++++++++marginLeft:+'0'
+++++++},1000,function(){
++++++++++++$('#vimeo_player_button').removeClass("active");
++++++++++++$('#vimeo_player_button').removeClass("active");
++++++++++++$('#youtube_player_button').addClass("active");
++++++++});
++++});++++

});|code-block|syntax|javascript|369474|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/Vrxv9/10/^0|7|T|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|D|3|E|5|6|7|15|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|16|8|@]|9|@]|C|$]]|$1|I|3|J|5|H|7|17|8|@]|9|@]|C|$]]|$1|K|3|L|5|H|7|18|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|19|8|@]|9|@]|C|$]]|$1|O|3|P|5|Q|7|1A|8|@]|9|@]|C|$R|S]]|$1|T|3|-4|5|6|7|1B|8|@]|9|@]|C|$]]]|U|$V|$5|W|X|Y|C|$Z|10]]]]

look at this jsfiddle
<a href="http://jsfiddle.net/Vrxv9/10/" rel="nofollow">http://jsfiddle.net/Vrxv9/10/</a>

what i have done here is

<ul>
<li>added active class on youtube button </li>
<li>applied active class on selected button</li>
<li>removed hove effect ( optional)</li>
</ul>

Code

<pre><code>$(document).ready(function(){

 // intialization
 $('#youtube_player_button').addClass("active");

 $('#vimeo_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '-1000px'
 },1000,function(){
 $('#youtube_player_button').removeClass("active");
 $('#vimeo_player_button').removeClass("active");
 $('#vimeo_player_button').addClass("active");
 }); 

 });

 $('#youtube_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '0'
 },1000,function(){
 $('#vimeo_player_button').removeClass("active");
 $('#vimeo_player_button').removeClass("active");
 $('#youtube_player_button').addClass("active");
 });
 }); 

});
</code></pre>

<a href="http://jsfiddle.net/alexruff/Vrxv9/3/" rel="nofollow">http://jsfiddle.net/alexruff/Vrxv9/3/</a>

I have 2 buttons, one for vimeo one for youtube. Those buttons toggle the 2 videos with a right to left movement.

I want to highlight (change color) the youtube button when the youtube video is shown (marginLeft: '0'), and the vimeo button when the vimeo video is shown (marginLeft: '-1000px').

I tried using an if else statement but than nothing worked anymore.

Thanks for help.

JQuery:

<pre><code>$(document).ready(function(){

$('#vimeo_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '-1000px'
 });
});

$('#youtube_player_button').click(function(){
 $('#youtube_player').animate({
 marginLeft: '0'
 });
}); 

var youtube = $('#youtube_player').animate({marginLeft: '0'});

if ('#youtube_player' = youtube) {
 $('#youtube_player_button').css('background-color': 'rgb(0, 0, 250)')
} else{
 $('#vimeo_player_button').css('background-color': 'rgb(0, 0, 250)')
};

});
</code></pre>

If else statement for changing color in css

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有两个按钮，一个给vimeo，一个给youtube。这些按钮切换两个视频与一个右向左的运动。我想高亮显示youtube视频时的youtube按钮(marginLeft：'0')和显示vimeo视频时的vimeo按钮(marginLeft：‘-1000 is’)。我试着用if tried语句，但没有用。谢谢你帮忙。JQ...

问语句，用于在css中更改颜色。
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问语句，用于在css中更改颜色。EN