Question

我想要完成的是自动关注模态视图。进一步解释一下。我想要它，以便当我点击我的网页上的图像并打开模态视图时，它应该自动聚焦于模态，允许我上下滚动，而不必单击图像将其聚焦到能够使用键盘上下滚动。

跟进我上面给了照片链接。希望现在更容易。干杯

HTML

<!DOCTYPE html>
<html>
<head>
    <title>
    Advise Column
    </title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <link rel="stylesheet" type="text/css" href="Modal.css">
    <link href="https://fonts.googleapis.com/css?family=Quattrocento|Risque|Unkempt" rel="stylesheet">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<br/>
<div class="container">
    <div class="row">
        <div class="panel panel-info">
            <div class="panel-heading"><h1 id="top-hd-01" class="page-header">PICK A SENSEI!</h1></div>
        </div>
    </div>
</div>
<div class="container">
    <div class="row">
        <figure class="col-xs-12 col-sm-12 col-md-4 col-lg-4 img-placement">
            <img src="Batman.jpg" alt="BATMAN" class="advise-page-img-sizing adv-page-img-modalling" id="adv-page-img-01">
            <figcaption class="img-captioning">BATMAN</figcaption>
        </figure>
        <figure class="col-xs-12 col-sm-12 col-md-4 col-lg-4 img-placement">
            <img src="Robin.jpg" alt="ROBINS" class="advise-page-img-sizing adv-page-img-modalling" id="adv-page-img-02">
            <figcaption class="img-captioning">ROBIN</figcaption>
        </figure>
        <figure class="col-xs-12 col-sm-12 col-md-4 col-lg-4 img-placement">
            <img src="Joker.jpg" alt="JOKER" class="advise-page-img-sizing adv-page-img-modalling" id="adv-page-img-03">
            <figcaption class="img-captioning">JOKER</figcaption>
        </figure>
    </div>
</div>
<!-- The Modal -->
<div class="modal" id="myModal">

  <!-- The Close Button -->
  <span class="close" id="modal-cross-button" onclick="document.getElementById('myModal').style.display='none'">&times;</span>

  <!-- Modal Content (The Image) -->
  <img class="modal-content" id="modal-adv-page-img">
  <!-- Modal Caption (Image Text) -->
  <div id="caption"></div>
</div>

<script src="Modal.js" type="text/javascript"></script>
</body>
</html>

CSS

#top-hd-01
{
    font-family: 'Unkempt', cursive;
}

.img-placement
{
    display: block;
    text-align: center;
    /*cursor: pointer;*/
}

.advise-page-img-sizing
{
    height: 250px;
    width: 350px;
}

.img-captioning
{
    font-size: 35px;
    font-family: 'Risque', cursive;
    text-align: center;
    margin-top: 10px;

}


/* Style the Image Used to Trigger the Modal */
.adv-page-img-modalling {
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
}

.adv-page-img-modalling:hover {opacity: 0.7;}

/* The Modal (background) */
.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 1; /* Sit on top */
    padding-top: 100px; /* Location of the box */
    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(0,0,0,0.9); /* Black w/ opacity */
}

/* Modal Content (Image) */
.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    padding: 20px;
    /*height: 100%;*/
   /* max-height: 450px;
    max-width: 700px;*/
}

#modal-cross-button
{
    position: fixed;
}

.sensei-answers, .sensei-questions, .sensei-quote
{
    font-family: 'Quattrocento', serif;
}

.sensei-questions
{
    font-size: 28px;
}

.sensei-answers
{
    font-size: 22px;
    color: darkblue;
}

.sensei-quote
{
    font-size: 20px;
    text-align: center;
    color: #ff751b;
}

/* Caption of Modal Image (Image Text) - Same Width as the Image */
#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}

/* Add Animation - Zoom in the Modal */
.modal-content, #caption { 
    -webkit-animation-name: zoom;
    -webkit-animation-duration: 0.6s;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
    from {-webkit-transform:scale(0)} 
    to {-webkit-transform:scale(1)}
}

@keyframes zoom {
    from {transform:scale(0)} 
    to {transform:scale(1)}
}

/* The Close Button */
.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

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

/* 100% Image Width on Smaller Screens */
@media only screen and (max-width: 700px){
    .modal-content {
        width: 100%;
    }
}

的JavaScript

// Get the modal
var modal = document.getElementById("myModal");

// Get the image and insert it inside the modal - use its "alt" text as a caption
var modalImg = document.getElementById("modal-adv-page-img");

var img1 = document.getElementById("adv-page-img-01")
var img2 = document.getElementById("adv-page-img-02")
var img3 = document.getElementById("adv-page-img-03")

var captionText = document.getElementById("caption");

img1.onclick = function(){
    modal.style.display = "block";
    modalImg.src = this.src;
    captionText.innerHTML = this.alt;
}
img2.onclick = function(){
    modal.style.display = "block";
    modalImg.src = this.src;
    captionText.innerHTML = this.alt;
}
img3.onclick = function(){
    modal.style.display = "block";
    modalImg.src = this.src;
    captionText.innerHTML = this.alt;
}


// Get the <span> element that closes the modal
var span = document.getElementsByClassName("close")[0];

// When the user clicks on <span> (x), close the modal
span.onclick = function() { 
  modal.style.display = "none";
}

Answer 1

autofocus属性在这种情况下不起作用，因为这将在页面加载时触发。但是，您可以使用一些JavaScript轻松解决此问题。

document.getElementById('modal').focus(); // vanilla JS
$('#modal').focus(); // jQuery

确保在模态开始后立即触发其中一个功能。

Answer 2

你可以试试这个：

$("#myModal").on('shown.bs.modal', function () {
        $(this).focus();
});

自动关注模态视图

2 个答案: