Question

我想使用bootstrap类淡入淡出来增加淡入淡出的持续时间。我找到了一些解决方案，如： Change amount of time Bootstrap tooltips display / fade in and out

How can I change the speed of the fade for alert messages in Twitter Bootstrap?

这是我的完整代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>

    <style>
        .fade {
            opacity: 0;
            -webkit-transition: opacity 40s linear;
            -moz-transition: opacity 40s linear;
            -ms-transition: opacity 40s linear;
            -o-transition: opacity 40s linear;
            transition: opacity 40s linear;
        }
    </style>
</head>
<body>


<div class="container">

    <h2>Wells are sections with border and grey background</h2>

    <div class="well">Basic Well</div>
    <div class="well well-sm">Small Well</div>

    <div class="alert alert-success">
        Congratulations, you just won the game!
    </div>

    <!-- to make the alert closable -->
    <div class="alert alert-info">
        <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
        Don't forget Kelly's birthday is today!
    </div>

    <!-- add the fade and in class to animate when closing -->
    <div class="alert alert-danger fade in">
        <a href="#" class="close" data-dismiss="alert" aria-label="close">&times;</a>
        Are you sure you want to delete your account?
    </div>

</div>

</body>
</html>

它只是不起作用。我做错了什么？

Answer 1

这可以解决您的问题：

.fade {
    -webkit-transition-duration: 5s; /* Safari */
    transition-duration: 5s;
}

此外，有关transition-duration的更多信息：https://www.w3schools.com/CSSref/css3_pr_transition-duration.asp

Answer 2

你试过!important吗？所以，它看起来像这样：

.fade {
    opacity: 0;
    -webkit-transition: opacity 1s linear !important;
    -moz-transition: opacity 1s linear !important;
    -ms-transition: opacity 1s linear !important;
    -o-transition: opacity 1s linear !important;
    transition: opacity 1s linear !important;
}

    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
    <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
    
    
<div class="container"><br><br>
    <div class="alert alert-info fade in" id="alert">
        <a href="#" class="close" onclick="document.getElementById('alert').style.opacity = '0'">&times;</a>
        Try closing this
    </div>
</div>

<小时/>

您可以为转换持续时间设置任何内容！

目前设置为1 second，但如果您觉得它太慢，请尝试使用300ms

<小时/>

增加淡入的持续时间.Bootstrap

2 个答案:

您可以为转换持续时间设置任何内容！

希望这有帮助