Html/CSS/Javascript:Popup onclick不适用于第二个div

Question

选择div时，我打开一个小弹出框。它是有效的，但如果我第二次尝试这样做(如下所示(，它就不起作用了。

非常感谢您能提供的任何帮助。这是我在w3schools:的代码

HTML:

<div class="popup" onclick="myFunction()">
Click me!
<span class="popuptext" id="myPopup">Popup text...</span>
</div>
<div class="popup" onclick="myFunction2()">
Click me2!
<span class="popuptext" id="myPopup2">Popup text...2</span>
</div>

JavaScript:

function myFunction() {
var popup =
document.getElementById("myPopup");
popup.classList.toggle("show");
}
function myFunction2() {
var popup =
document.getElementById("myPopup2");
popup.classList.toggle("show");
}

CSS：

/* Popup container */
.popup {
position: relative;
display: inline-block;
cursor: pointer;
}
/* The actual popup (appears on top) */
.popup .popuptext {
visibility: hidden;
width: 160px;
background-color: #555;
color: #fff;
text-align: center;
border-radius: 6px;
padding: 8px 0;
position: absolute;
z-index: 1;
bottom: 125%;
left: 50%;
margin-left: -80px;
}
/* Popup arrow */
.popup .popuptext::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -5px;
border-width: 5px;
border-style: solid;
border-color: #555 transparent transparent transparent;
}
/* Toggle this class when clicking on the popup 
container (hide and show the popup) */
.popup .show {
visibility: visible;
-webkit-animation: fadeIn 1s;
animation: fadeIn 1s
}

Answer 1

myFunction被声明两次，第二次声明覆盖第一次声明。

将其更改为myFunction2或其他什么，他们会更新您的onclick="myFunction2()"

检查您的控制台是否有错误总是很好的：(

function myFunction() {
var popup = 
document.getElementById("myPopup");
popup.classList.toggle("show");
}
function myFunction2() {
var popup = 
document.getElementById("myPopup2");
popup.classList.toggle("show");
}

body {
padding-top: 80px;
text-align: center;
}
/* Popup container */
.popup {
position: relative;
display: inline-block;
cursor: pointer;
}
/* The actual popup (appears on top) */
.popup .popuptext {
visibility: hidden;
width: 160px;
background-color: #555;
color: #fff;
text-align: center;
border-radius: 6px;
padding: 8px 0;
position: absolute;
z-index: 1;
bottom: 125%;
left: 50%;
margin-left: -80px;
}
/* Popup arrow */
.popup .popuptext::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -5px;
border-width: 5px;
border-style: solid;
border-color: #555 transparent transparent 
transparent;
}
/* Toggle this class when clicking on the popup 
container (hide and show the popup) */
.popup .show {
visibility: visible;
-webkit-animation: fadeIn 1s;
animation: fadeIn 1s
}

<div class="popup" onclick="myFunction()">Click 
me!
<span class="popuptext" id="myPopup">Popup 
text...</span>
</div>
<div class="popup" onclick="myFunction2()">Click 
me2!
<span class="popuptext" id="myPopup2">Popup 
text...2</span>
</div>

Answer 2

您的代码似乎运行良好。

/* Popup container */
.popup {
position: relative;
display: inline-block;
cursor: pointer;
}
/* The actual popup (appears on top) */
.popup .popuptext {
visibility: hidden;
width: 160px;
background-color: #555;
color: #fff;
text-align: center;
border-radius: 6px;
padding: 8px 0;
position: absolute;
z-index: 1;
bottom: 125%;
left: 50%;
margin-left: -80px;
}
/* Popup arrow */
.popup .popuptext::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -5px;
border-width: 5px;
border-style: solid;
border-color: #555 transparent transparent 
transparent;
}
/* Toggle this class when clicking on the popup 
container (hide and show the popup) */
.popup .show {
visibility: visible;
-webkit-animation: fadeIn 1s;
animation: fadeIn 1s
}

<div class="popup" onclick="myFunction()">Click 
me!
<span class="popuptext" id="myPopup">Popup 
text...</span>
</div>
<div class="popup" onclick="myFunction2()">Click 
me2!
<span class="popuptext" id="myPopup2">Popup 
text...2</span>
</div>
<script>
function myFunction() {
var popup = 
document.getElementById("myPopup");
popup.classList.toggle("show");
}
function myFunction2() {
var popup = 
document.getElementById("myPopup2");
popup.classList.toggle("show");
}
</script>

Answer 3

这可以通过仅使用javascript添加点击事件来完成。使用这个，您可以添加多达popup元素。

var popupArr = document.getElementsByClassName("popup");
for (var index in popupArr) {
popupArr[index].onclick = function(ev) {
var popup = ev.target.children[0];
popup.classList.toggle("show");
}
}

/* Popup container */
.popup {
position: relative;
display: inline-block;
cursor: pointer;
}
/* The actual popup (appears on top) */
.popup .popuptext {
visibility: hidden;
width: 160px;
background-color: #555;
color: #fff;
text-align: center;
border-radius: 6px;
padding: 8px 0;
position: absolute;
z-index: 1;
bottom: 125%;
left: 50%;
margin-left: -80px;
}
/* Popup arrow */
.popup .popuptext::after {
content: "";
position: absolute;
top: 100%;
left: 50%;
margin-left: -5px;
border-width: 5px;
border-style: solid;
border-color: #555 transparent transparent 
transparent;
}
/* Toggle this class when clicking on the popup 
container (hide and show the popup) */
.popup .show {
visibility: visible;
-webkit-animation: fadeIn 1s;
animation: fadeIn 1s
}

<div class="popup">Click 
me!
<span class="popuptext" >Popup 
text...</span>
</div>
<div class="popup">Click 
me2!
<span class="popuptext" >Popup 
text...2</span>
</div>