div 覆盖数组中的每个 div

Question

我正在尝试制作一个简单的列表，显示数组中每个 div 的 div 叠加层，但我在定义每个 div 时遇到问题。

我当前的 java/jQuery 脚本涉及为数组中的每个对象创建一个 div 以及背景图像（我也遇到了 links 的问题。我有一个在线 link 为背景图片工作。）。

我想做的是为列表中的每个项目提供一个覆盖，然后在将来使用相同的代码提供打开 link 或显示图像预览的能力，但那是为了另一个列表。

那么，我怎样才能让叠加层为每个 div 工作，而不是由 class 执行。我能够为每个对象数组创建一个 div，其中包含我想要的所有设置以及叠加层。

您会在我的文档中找到现成函数的代码，目前 hides/shows 每个叠加层 div。

我想将其定义为数组中的 individual divs' 而不是全部。

$(document).ready(function() { 
  displayDesign();
  $( ".pagesListOverlay" ).mouseenter(function() {
    $( ".pagesListOverlay" ).hide()  ;
  });
});
var arrayVariableDesign = [
  {name: "object1", type:"type1", company:"company1", dateYear:"2017", dateMonth:"08", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object2", type:"type1", company:"company1", dateYear:"2017", dateMonth:"01", dateDay:"20", image:"../images/preview/noimg.png"},
  {name: "object3", type:"type2", company:"company2", dateYear:"2016", dateMonth:"08", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object4", type:"type3", company:"company3", dateYear:"2016", dateMonth:"03", dateDay:"04", image:"../images/preview/noimg.png"},
  {name: "object5", type:"type1", company:"company2", dateYear:"2017", dateMonth:"02", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object6", type:"type2", company:"company1", dateYear:"2017", dateMonth:"08", dateDay:"20", image:"../images/preview/noimg.png"},
];
var arrayLength_Design = arrayVariableDesign.length;
var temp_Design;
    
function displayDesign() {
    
  for (i = 0; i < arrayLength_Design; i++) { 
    var sortDate_Design = arrayVariableDesign[i].dateYear + arrayVariableDesign[i].dateMonth + arrayVariableDesign[i].dateDay;
    temp_Design = document.createElement('div');
    temp_Design.className = 'pagesListBtn mobilePagesListBtn';
    temp_Design.style.background = "url(" + arrayVariableDesign[i].image.src + ")"; // 
    temp_Design.style.backgroundSize = "100%";
    temp_Design.style.backgroundRepeat = "no-repeat";
    temp_Design.style.backgroundPosition = "50% 50%";
    temp_Design.style.backgroundColor = "#C02024";
    temp_Design.innerHTML = "<div class='pagesListOverlay mobilePagesListOverlayBtn'>" + arrayVariableDesign[i].name + " for " + arrayVariableDesign[i].company + "<br>" + arrayVariableDesign[i].type + "<br>" + arrayVariableDesign[i].dateDay + "/" + arrayVariableDesign[i].dateMonth + "/" + arrayVariableDesign[i].dateYear + "</div>";
    document.getElementById("demo").appendChild(temp_Design);
  }
}

.pagesListBtn {
  z-index: 500;
  background-color: #C02024;  
  display: inline-block;         
}

.pagesListBtn:hover {
  background-color: #920400;    
}

.pagesListOverlay {
  padding-top: 0;
  margin: 0 auto;
  opacity: 0.8;
  display: inherit;
  background-color: white; 
  text-align: center;
  vertical-align: bottom;
  text-decoration:none;
  font-weight:900;
  line-height:30px;
}

.mobilePagesListBtn {
  min-height:150px;
  max-height:150px;
  width: 100%; /*295px*/
  padding: 0;
  margin-top: 25px;
  margin-bottom: -15px;
}

.mobilePagesListOverlayBtn {
  min-height:150px;
  max-height:150px;
  width: 100%; /*295px*/
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
<div id="demo"></div>

我还遇到了此代码的另外两个问题。

图像 link 无效，我只是从我的 css 文件中复制并粘贴
我得到了很多 'missing strict statements everywhere' - 我通过添加 "use strict" 解决了这个问题；到我的代码。

感谢您的帮助。

Answer 1

您必须在 parent .pagesListBtn 上应用 mouseenter 和 mouseleave。从$(this)，就是.pagesListBtn盘旋的地方，找到childrenpagesListOverlay到show/hide吧。

$(document).ready(function() { 
  displayDesign();
  $( ".pagesListBtn" ).mouseenter(function() {
    $( this ).find(".pagesListOverlay").fadeOut(800)  ;
  });
  $( ".pagesListBtn" ).mouseleave(function() {
    $( this ).find(".pagesListOverlay").fadeIn(800)  ;
  });
  
  
});
var arrayVariableDesign = [
  {name: "object1", type:"type1", company:"company1", dateYear:"2017", dateMonth:"08", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object2", type:"type1", company:"company1", dateYear:"2017", dateMonth:"01", dateDay:"20", image:"../images/preview/noimg.png"},
  {name: "object3", type:"type2", company:"company2", dateYear:"2016", dateMonth:"08", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object4", type:"type3", company:"company3", dateYear:"2016", dateMonth:"03", dateDay:"04", image:"../images/preview/noimg.png"},
  {name: "object5", type:"type1", company:"company2", dateYear:"2017", dateMonth:"02", dateDay:"24", image:"../images/preview/noimg.png"},
  {name: "object6", type:"type2", company:"company1", dateYear:"2017", dateMonth:"08", dateDay:"20", image:"../images/preview/noimg.png"},
];
var arrayLength_Design = arrayVariableDesign.length;
var temp_Design;
    
function displayDesign() {
    
  for (i = 0; i < arrayLength_Design; i++) { 
    var sortDate_Design = arrayVariableDesign[i].dateYear + arrayVariableDesign[i].dateMonth + arrayVariableDesign[i].dateDay;
    temp_Design = document.createElement('div');
    temp_Design.className = 'pagesListBtn mobilePagesListBtn';
    temp_Design.style.background = "url(" + arrayVariableDesign[i].image.src + ")"; // 
    temp_Design.style.backgroundSize = "100%";
    temp_Design.style.backgroundRepeat = "no-repeat";
    temp_Design.style.backgroundPosition = "50% 50%";
    temp_Design.style.backgroundColor = "#C02024";
    temp_Design.innerHTML = "<div class='pagesListOverlay mobilePagesListOverlayBtn'>" + arrayVariableDesign[i].name + " for " + arrayVariableDesign[i].company + "<br>" + arrayVariableDesign[i].type + "<br>" + arrayVariableDesign[i].dateDay + "/" + arrayVariableDesign[i].dateMonth + "/" + arrayVariableDesign[i].dateYear + "</div>";
    document.getElementById("demo").appendChild(temp_Design);
  }
}

.pagesListBtn {
  /*z-index: 500;*/
  background-color: #C02024;  
  /*display: inline-block;*/
  display:block;
}

.pagesListBtn:hover {
  background-color: #920400;    
}

.pagesListOverlay {
  padding: 0;   /* changed */
  margin: 0;    /* changed */
  height: 150px;    /* added */
  opacity: 0.8;
  display: inherit;
  background-color: white; 
  text-align: center;
  vertical-align: bottom;
  text-decoration:none;
  font-weight:900;
  line-height:30px;
}

.mobilePagesListBtn {
  height: 150px;      /* added */
  /*min-height:150px; 
  max-height:150px;*/
  width: 100%; /*295px*/
  padding: 0;
  margin-top: 25px;
  /*margin-bottom: -15px;*/
}

.mobilePagesListOverlayBtn {
  /*min-height:150px;
  max-height:150px;*/
  padding:0;    /* added */
  height: 150px;
  width: 100%; /*295px*/
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js"></script>
<div id="demo"></div>

div 覆盖数组中的每个 div

div Overlay for every div in an array

javascript

arrays

jquery

overlays