如何在jQuery和SASS中制作一个轻柔的闪烁按钮？

Question

在我的Rails应用程序中，我有时不得不使某些按钮闪烁/脉动。

这些按钮颜色各不相同。有些是红色的，另一些是绿色的，还有一些是蓝色的。

这是我的jQuery：

setInterval(function(){
  $('a.flashing').toggleClass('blink');
}, 1000);

这是我的CSS (实际上)：

.blink {
  background-color: red;
}

这个很管用。

然而，我不希望所有的按钮在红色闪现。

相反，为了使这种效果在眼睛上更柔和一点，每个按钮应该闪烁在一个稍深的颜色，它的原始颜色(正如你所知道的可能有所不同)。

如何在尽可能少的代码和理想情况下根本不使用jQuery插件来实现这一点？

谢谢你的帮助。

Answer 1

这是一个SASS (+ Compass)函数，它创建了一个脉动效应。脉动的次数可以通过$count指定。

=keyframes($name)
  @-webkit-keyframes #{$name}
    @content

  @-moz-keyframes #{$name}
    @content

  @-ms-keyframes #{$name}
    @content

  @keyframes #{$name}
    @content

=animation-name($name)
  -webkit-animation-name: $name
  -moz-animation-name: $name
  -o-animation-name: $name
  animation-name: $name

=animation-duration($duration)
  -webkit-animation-duration: $duration
  -moz-animation-duration: $duration
  -o-animation-duration: $duration
  animation-duration: $duration

=animation-timing-function($timing-function)
  -webkit-animation-timing-function: $timing-function
  -moz-animation-timing-function: $timing-function
  -o-animation-timing-function: $timing-function
  animation-timing-function: $timing-function

=animation-iteration-count($iteration-count)
  -webkit-animation-iteration-count: $iteration-count
  -moz-animation-iteration-count: $iteration-count
  -o-animation-iteration-count: $iteration-count
  animation-iteration-count: $iteration-count

=animation-direction($direction)
  -webkit-animation-direction: $direction
  -moz-animation-direction: $direction
  -o-animation-direction: $direction
  animation-direction: $direction

// define keyframes
+keyframes(change_background_color)
  to
    background-color: $some_color

// define the mixin
=pulsate($time:0.2s, $count:8)
  +animation-name(change_background_color)
  +animation-duration($time)
  +animation-iteration-count($count)
  +animation-direction(alternate)
  +animation-timing-function(ease-in-out)

// use the mixin in a class
.pulsate-8times
  +pulsate(1s, 16)

不需要JS (除了切换类)。将$count设置为“无限”，以实现无休止的脉动。

具有编译的CSS: JSFiddle：http://jsfiddle.net/3L2yA/的

更新: SCSS中也一样(感谢http://sasstoscss.com/ ;-)：

@mixin keyframes($name) {
    @-webkit-keyframes #{$name} {
        @content;
    }

    @-moz-keyframes #{$name} {
        @content;
    }

    @-ms-keyframes #{$name} {
        @content;
    }

    @keyframes #{$name} {
        @content;
    }
}

@mixin animation-name($name) {
  -webkit-animation-name: $name;
     -moz-animation-name: $name;
       -o-animation-name: $name;
          animation-name: $name;
}

@mixin animation-duration($duration) {
  -webkit-animation-duration: $duration;
     -moz-animation-duration: $duration;
       -o-animation-duration: $duration;
          animation-duration: $duration;
}

@mixin animation-timing-function($timing-function) {
  -webkit-animation-timing-function: $timing-function;
     -moz-animation-timing-function: $timing-function;
       -o-animation-timing-function: $timing-function;
          animation-timing-function: $timing-function;
}

@mixin animation-iteration-count($iteration-count) {
  -webkit-animation-iteration-count: $iteration-count;
     -moz-animation-iteration-count: $iteration-count;
       -o-animation-iteration-count: $iteration-count;
          animation-iteration-count: $iteration-count;
}

@mixin animation-direction($direction) {
  -webkit-animation-direction: $direction;
     -moz-animation-direction: $direction;
       -o-animation-direction: $direction;
          animation-direction: $direction;
}

@include keyframes(change_background_color) {
  to {
    background-color: $some_color;
  }
}

@mixin pulsate($time: 0.2s, $count: 8) {
  @include animation-name(change_background_color);
  @include animation-duration($time);
  @include animation-iteration-count($count);
  @include animation-direction(alternate);
  @include animation-timing-function(ease-in-out);
}

.pulsate-8times {
  @include pulsate(1s, 16);
}

Answer 2

尝试添加一个CSS3转换效果，然后您不需要跳过和JS箍。.normal是默认颜色。

 .normal {
      background-color:rgba(250,20,10,1);
      transition: all .5s ease;
    }

.blink {
      background-color:rgba(250,20,10,.2);
      transition: all .5s ease;
    }

Answer 3

尝试使用jQuery动画背景颜色

HTML:

<div id="div1" class="normal" >some text</div>

JavaScript

setTimeout(function(){
    $("#div1").animate({backgroundColor: '#dd6666'}, 500);
}, 1000);

演示