javascript - 在 javascript 中关闭弹出/模式的逻辑

Question

我正在尝试实现两个非常简单的弹出窗口/模式，具有以下功能 - 1. 单击按钮将打开相应的弹出窗口。 2. 弹出窗口处于事件状态后，单击屏幕上的任意位置将关闭弹出窗口。 3. 单击“X”将关闭弹出窗口。

我能够实现第 1 点和第 2 点中提到的目标。但是，我无法实现第 3 点。

HTML -

<button id="myBtn1">Open Modal 1</button>
<div id="myModal1" class="modal">
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>Some text in first Modal</p>
  </div>
</div>


<button id="myBtn2">Open Modal 2</button>
<div id="myModal2" class="modal">
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>Some text in second modal</p>
  </div>
</div>

JS - 这显然是不正确的:

var modal1 = document.getElementById('myModal1');
var btn1 = document.getElementById("myBtn1");

var modal2 = document.getElementById('myModal2');
var btn2 = document.getElementById("myBtn2");

var span = document.getElementsByClassName("close")[0];

btn1.onclick = function() {
    modal1.style.display = "block";
}

btn2.onclick = function() {
    modal2.style.display = "block";
}


// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal1) {
        modal1.style.display = "none";
    }
    if (event.target == modal2) {
        modal2.style.display = "none";
    }
}

span.onclick = function() {
    modal1.style.display = "none";
}

请在这里找到我的代码 - https://jsfiddle.net/23bL2w9L/

注意 - 我无法以任何方式更改 HTML 代码。只需修改 Javascript。

提前致谢

Answer 1

您只有第一个模式的跨度Close。我已经动态修改了您的代码以关闭模式窗口。如果您有10 modal关闭按钮，则无需任何修改即可使用。

已更改

var span = document.getElementsByClassName("close")[0];

至

var span = document.querySelectorAll(".close"); //this will get all `.close` elements

改变了，

span.onclick = function() {
    modal1.style.display = "none";
}

至

for(var i = 0; i < span.length; i++){
  span[i].onclick = function() {
      //modal1.style.display = "none";
      //console.log(this.closest('.modal'));
      this.closest('.modal').style.display = "none";
  }
}

https://jsfiddle.net/23bL2w9L/5/

演示:

var modal1 = document.getElementById('myModal1');
var btn1 = document.getElementById("myBtn1");

var modal2 = document.getElementById('myModal2');
var btn2 = document.getElementById("myBtn2");

var span = document.querySelectorAll(".close");

btn1.onclick = function() {
    modal1.style.display = "block";
}

btn2.onclick = function() {
    modal2.style.display = "block";
}


// When the user clicks anywhere outside of the modal, close it
window.onclick = function(event) {
    if (event.target == modal1) {
        modal1.style.display = "none";
    }
    if (event.target == modal2) {
        modal2.style.display = "none";
    }
}

for(var i = 0; i < span.length; i++){
  span[i].onclick = function() {
    //modal1.style.display = "none";
    console.log(this.closest('.modal'));
    this.closest('.modal').style.display = "none";
  }
}

/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.4); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 15% auto; /* 15% from the top and centered */
    padding: 20px;
    border: 1px solid #888;
    width: 80%; /* Could be more or less, depending on screen size */
}

/* The Close Button */
.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

<!-- Trigger/Open The Modal -->
<button id="myBtn1">Open Modal 1</button>

<!-- The Modal -->
<div id="myModal1" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>Some text in first Modal</p>
  </div>

</div>




<!-- Trigger/Open The Modal -->
<button id="myBtn2">Open Modal 2</button>

<!-- The Modal -->
<div id="myModal2" class="modal">

  <!-- Modal content -->
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>Some text in second modal</p>
  </div>

</div>