javascript - 尝试淡化元素时 setTimeout 不起作用

Question

我打电话 atooltip并试图在 9 秒后隐藏它，但它对我不起作用。

这里发生的情况是“工具提示”仅在加载后隐藏，但在我第二次单击“触摸我”按钮时它没有响应。
“触摸我”按钮是#pop-regalo

我在脚本中做错了什么？
您可以在下面找到一个演示：

$(function() {
  $('#pop-regalo').hide();
  setTimeout(function() {
    $('#pop-regalo').fadeIn('slow');
  }, 1000);
});

//--------------------

$(document).ready(function() {
  $("#pop-regalo").click(function() {
    $("#hola,.layer-2,.tooltip").show();
  });
  $("#hola").click(function() {
    $("#hola,.layer-2").hide();
  });
});

// --------------------

$(function() {
  $('.tooltip');
  setTimeout(function() {
    $('.tooltip').fadeOut('slow');
  }, 9000);
});

html,
body {
  left: 0;
  top: 0;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif
}

.note {
  width: 50%;
  margin: 70px auto 0
}

#pop-regalo {
  position: fixed;
  left: 15px;
  top: 15px;
  padding: 10px 15px;
  color: white;
  background: red;
  cursor: pointer
}

#hola {
  display: none;
  position: absolute;
  width: 200px;
  height: 200px;
  padding: 15px 15px 8px;
  text-align: center;
  font-size: 2em;
  line-height: 200px;
  background: #999;
  -webkit-animation: fadein 1s;
  animation: fadein .75s;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  text-align: center;
  border-radius: 5px;
  -webkit-box-shadow: 0 3px 8px rgba(0, 0, 0, 0.7);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.7);
  z-index: 9999
}

@keyframes fadein {
  0% {
    opacity: 0
  }
  50% {
    opacity: 0
  }
  75% {
    opacity: 0
  }
  100% {
    opacity: 1
  }
}

@-webkit-keyframes fadein {
  0% {
    opacity: 0
  }
  50% {
    opacity: 0
  }
  75% {
    opacity: 0
  }
  100% {
    opacity: 1
  }
}

.layer-2 {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  -webkit-animation: fadein .2s;
  animation: fadein .2s;
  z-index: 999
}

.tooltip {
  display: none;
  position: fixed;
  top: 140px;
  left: 100%;
  margin-left: -80px
}

.tooltip .tooltiptext {
  width: 120px;
  background: #000;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 8px 12px;
  position: absolute;
  z-index: 1;
  top: -5px;
  right: 110%;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 30%;
  left: 100%;
  margin-top: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent transparent #000
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="pop-regalo">Touch Me
  <!--<img src="https://i.pinimg.com/originals/3b/4f/ff/3b4fff9dfb958a180863c56d7fcf6326.jpg">-->
</div>

<div class="note">What is happening here that the "tooltip" is only hidden after loading, but it does not respond the second time we click on the red button named Touch Me...?</div>

<div id="hola">Close</div>

<div class="tooltip">
  <span class="tooltiptext">A gift for you</span>
</div>

<div class="layer-2"></div>

标签： javascriptjquery

Answer 1

您必须在显示工具提示时触发超时。在您的原始代码中，您只是在页面加载时触发超时，因此，如果您在 9 秒后第一次单击红色按钮，即使在第一次迭代时，工具提示也不会隐藏。

您可能还希望将对超时实例的引用保存到变量并在触发新实例之前取消此实例，以便在您关闭叠加层并在工具提示仍然存在时再次单击按钮时不会过早隐藏工具提示显示。

var tooltipTimeout;

$(function(){
    $('#pop-regalo').hide();
    setTimeout(function(){
        $('#pop-regalo').fadeIn('slow');
    },1000);
});

//--------------------

$(document).ready(function(){
  $("#pop-regalo").click(function(){
    $("#hola,.layer-2,.tooltip").show();
    // clear any old timeout
    window.clearTimeout(tooltipTimeout);
    // you have to start the timeout after showing the tooltip
    tooltipTimeout = setTimeout(function(){
        $('.tooltip').fadeOut('slow');
    },9000);
  });
    $("#hola").click(function(){
      $("#hola,.layer-2").hide();
  });
});

// --------------------

$(function(){
    // the code in here is only called once at page load
    // $('.tooltip'); // <= this doesn't do anything
    // setTimeout(function(){
    //     $('.tooltip').fadeOut('slow');
    // },9000);
});

html,body {left:0;top:0;margin:0;padding:0;font-family:Arial,sans-serif}

.note {width:50%;margin:70px auto 0}

#pop-regalo {
  position:fixed;
  left:15px;
  top:15px;
  padding:10px 15px;
  color:white;
  background:red;
  cursor:pointer
}

#hola {
    display:none;
    position:absolute;
    width:200px;
    height:200px;
    padding:15px 15px 8px;
    text-align:center;
    font-size:2em;
    line-height:200px;
    background:#999;
    -webkit-animation:fadein 1s;
    animation:fadein .75s;
    top:50%;
    left:50%;
    transform:translate(-50%,-50%);
    background:#fff;
    text-align:center;
    border-radius:5px;
    -webkit-box-shadow:0 3px 8px rgba(0,0,0,0.7);
    box-shadow:0 3px 8px rgba(0,0,0,0.7);
    z-index:9999
}

@keyframes fadein{0%{opacity:0}50%{opacity:0}75%{opacity:0}100%{opacity:1}}
@-webkit-keyframes fadein{0%{opacity:0}50%{opacity:0}75%{opacity:0}100%{opacity:1}}

.layer-2 {
    display:none;
    position:absolute;
    top:0;
    left:0;
    width:100vw;
    height:100vh;
    background:rgba(0,0,0,0.5);
    -webkit-animation:fadein .2s;
    animation:fadein .2s;
    z-index:999
}

.tooltip {
  display:none;
  position: fixed;
  top:140px;
  left:100%;
  margin-left:-80px
}

.tooltip .tooltiptext {
  width: 120px;
  background:#000;
  color: #fff;
  text-align: center;
  border-radius: 6px;
  padding: 8px 12px;
  position: absolute;
  z-index: 1;
  top: -5px;
  right: 110%;
}

.tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 30%;
  left: 100%;
  margin-top: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: transparent transparent transparent #000
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="pop-regalo">Touch Me
<!--<img src="https://i.pinimg.com/originals/3b/4f/ff/3b4fff9dfb958a180863c56d7fcf6326.jpg">-->
</div>

<div class="note">The tooltip will show upon button click and then hide after 9 seconds.</div>

<div id="hola">Close</div>

<div class="tooltip">
  <span class="tooltiptext">A gift for you</span>
</div>

<div class="layer-2"></div>