2017-04-01 101 views

回答

0

是的,一切皆有可能笑

试试这个:

$('ul li a').live('click', function() { 
 
    let numClicked = $(this).parent('li').index(); 
 
    $("a").each(function(index) { 
 
    if (index <= numClicked) { 
 
     $(this).addClass('active-red'); 
 
    } else { 
 
     $(this).removeClass('active-red'); 
 
    } 
 
    }); 
 
});
@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css'); 
 
.container { 
 
    margin-top: 10px; 
 
} 
 

 
.active-red { 
 
    color: red; 
 
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> 
 
<script src="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.1.0/bootstrap.min.js"></script> 
 

 
<ul class="nav nav-tabs"> 
 
    <li><a href="#aaa" data-toggle="tab">1st</a></li> 
 
    <li><a href="#bbb" data-toggle="tab">2nd</a></li> 
 
    <li><a href="#ccc" data-toggle="tab">3rd</a></li> 
 
    <li><a href="#ccc" data-toggle="tab">4th</a></li> 
 
</ul> 
 
<div class="tab-content" id="tabs"> 
 
    <div class="tab-pane" id="aaa">...Content...</div> 
 
    <div class="tab-pane" id="bbb">...Content...</div> 
 
    <div class="tab-pane" id="ccc">...Content...</div> 
 
</div>

3

你可以用三条线的jQuery实现这一目标。

update fiddle

工作实例

function activaTab(tab) { 
 
    $('.nav-tabs a[href="#' + tab + '"]').tab('show'); 
 

 

 
}; 
 
$("#n_tab li a").click(function() { 
 
    $(this).parent().prevAll().addClass('redcol'); 
 
    $(this).parent().nextAll().removeClass('redcol'); 
 

 
});
.redcol>a { 
 
    color: red; 
 
}
<!DOCTYPE html> 
 
<html lang="en"> 
 

 
<head> 
 
    <title>Bootstrap Example</title> 
 
    <meta charset="utf-8"> 
 
    <meta name="viewport" content="width=device-width, initial-scale=1"> 
 
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> 
 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> 
 
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> 
 

 
</head> 
 

 
<body> 
 
    <ul id="n_tab" class="nav nav-tabs"> 
 
    <li><a href="#aaa" data-toggle="tab">1st</a></li> 
 
    <li><a href="#bbb" data-toggle="tab">2nd</a></li> 
 
    <li><a href="#ccc" data-toggle="tab">3rd</a></li> 
 
    <li><a href="#ccc" data-toggle="tab">4th</a></li> 
 
    </ul> 
 
    <div class="tab-content" id="tabs"> 
 
    <div class="tab-pane" id="aaa">...Content...</div> 
 
    <div class="tab-pane" id="bbb">...Content...</div> 
 
    <div class="tab-pane" id="ccc">...Content...</div> 
 
    </div> 
 
</body> 
 

 
</html>

希望这有助于!