Question

我试图在用户单击下一个或上一个按钮时添加淡入效果。这是我的代码

$(".nextBtn").click(function(e) {
  var curr = $(".d-block");
  var next = curr.next(".form-group")
  if(next.length) {
  curr.removeClass("d-block");
  curr.addClass("d-none");
  next.removeClass("d-none");
  next.addClass("d-block");
  }
});

$(".prevBtn").click(function(e) {
  console.log("ye")
  var curr = $(".d-block");
  var prev = curr.prev(".form-group")
  if(prev.length) {
  curr.removeClass("d-block");
  curr.addClass("d-none");
  prev.removeClass("d-none");
  prev.addClass("d-block");
  }
});

@import url(//fonts.googleapis.com/earlyaccess/notosansbengaliui.css);

body {
  background: url("https://picsum.photos/200/300/?blur&image=719"); /*blurry fire*/
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  background-attachment: fixed;
  font-family: 'Noto Sans Bengali UI', sans-serif !important;
}
.auth ,.auth legend, .auth .group1 button {
  color: white;
}
h2 {
  text-align:center;
  padding: 20px
}
.group1 button {
  background-color:transparent;
  color:white;
  border: 1px solid white;
  border-radius: 5px;
} 
.button:not(:last-child) {
  border-right: none;
}
.group1 button:hover {
  padding-right: 30px;
  padding-left: 30px;
  text-align: center;
  border: 1px solid white;
  transition: .1s linear;
  -webkite-transition: .1s linear;
  -moz-transition: .1s linear;
  -o-transition: .1s linear;
}

input[type="text"],
input[type="password"] {
  border:none;
  border-bottom: 1px dotted white;
  background-color:transparent;
  color: white;
  width: 100%;
  margin: 10px;
}

input[type="file"] {
  margin: 10px;
}

textarea {
  width: 100%;
  border-radius: 5px;
  background-color: transparent;
  color: white;
}

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
<div class="container auth">
  <form>


    <div class="form-group d-block">
      <p class="h4">some content</p>
      <p>
        blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah
      </p>
    </div>

    <div class="form-group d-none">
      <p class="h4">other content</p>
      <p>

        foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo

      </p>
    </div>

    <div class="btn-group btn-group-lg group1">
      <button type="button" class="btn prevBtn">Previous</button>
      <button type="button" class="btn nextBtn">Next</button>
    </div>
  </form>
</div>
</div>

我试图将“ fade”类添加到每个表单组，但是停止显示div。请帮忙。

Answer 1

不幸的是，在使用display:block和display:none来显示/隐藏元素时，您无法添加效果。要制作效果，可以使用opacity , visibility , height , transition ..请参见下一个例子

$(".nextBtn").click(function(e) {
  var curr = $(".do-block");
  var next = curr.next(".form-group")
  if(next.length) {
  curr.removeClass("do-block");
  curr.addClass("do-none");
  next.removeClass("do-none");
  next.addClass("do-block");
  }
});

$(".prevBtn").click(function(e) {
  console.log("ye")
  var curr = $(".do-block");
  var prev = curr.prev(".form-group")
  if(prev.length) {
  curr.removeClass("do-block");
  curr.addClass("do-none");
  prev.removeClass("do-none");
  prev.addClass("do-block");
  }
});

@import url(//fonts.googleapis.com/earlyaccess/notosansbengaliui.css);

body {
  background: url("https://picsum.photos/200/300/?blur&image=719"); /*blurry fire*/
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  background-attachment: fixed;
  font-family: 'Noto Sans Bengali UI', sans-serif !important;
}
.auth ,.auth legend, .auth .group1 button {
  color: white;
}
h2 {
  text-align:center;
  padding: 20px
}
.group1 button {
  background-color:transparent;
  color:white;
  border: 1px solid white;
  border-radius: 5px;
} 
.button:not(:last-child) {
  border-right: none;
}
.group1 button:hover {
  padding-right: 30px;
  padding-left: 30px;
  text-align: center;
  border: 1px solid white;
  transition: .1s linear;
  -webkite-transition: .1s linear;
  -moz-transition: .1s linear;
  -o-transition: .1s linear;
}

input[type="text"],
input[type="password"] {
  border:none;
  border-bottom: 1px dotted white;
  background-color:transparent;
  color: white;
  width: 100%;
  margin: 10px;
}

input[type="file"] {
  margin: 10px;
}

textarea {
  width: 100%;
  border-radius: 5px;
  background-color: transparent;
  color: white;
}


/* added classes */
.do-block {
  height : auto;
  opacity : 1;
  visibility : visible;
  transition-duration: 2s;
}

.do-none {
 height : 0px;
 opacity : 0;
 visibility : hidden;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
  </head>
  
  <body>
    <div class="container auth">
        <form>
          
           
       <div class="form-group do-block">
       <p class="h4">some content</p>
       <p>
       blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah
       blah blah blah
       </p>
      </div>
          
      <div class="form-group do-none">
      <p class="h4">other content</p>
      <p>
      
       foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo foo 

      </p>
      </div>
          
  <div class="btn-group btn-group-lg group1">
    <button type="button" class="btn prevBtn">Previous</button>
    <button type="button" class="btn nextBtn">Next</button>
  </div>
</form>
</div>
</div>
  </body>
</html>

^{注意：我在html，js中将d-block , d-none更改为do-block , do-none，并在CSS样式表的底部添加了类。需要一些工作来使其在显示/隐藏元素时不会下推，您可能需要将固定的height设置为form-group而不是height : auto , 0来设置元素，或者可以使用{ {1}}位置。无论如何，您都可以从上面的示例开始}

^{在How to add transitions/effects to display:block}

bootstrap 4自定义淡入效果

1 个答案: