HTML5拖放API实现自动生成相框功能

(编辑:jimmy 日期: 2024/11/13 浏览:2)

实现功能: 将桌面图片拖入指定地方,生成相框和相关信息。

相框需要自己配置,设置为背景,在CSS中设置。

效果如图:

HTML5拖放API实现自动生成相框功能
HTML5拖放API实现自动生成相框功能

html部分:

<!DOCTYPE html>
<html>

 <head>
  <meta charset="UTF-8">
  <title></title>
  <link rel="stylesheet" type="text/css" href="test3.css"/>
  <script type="text/javascript" src="test3.js"></script>
 </head>

 <body>
  <h1 style="text-align: center;">H5拖放API之图片相框效果</h1>
  <hr />
  <div class="box"></>
   请将图片拖放至此处
  </div>
  <div class="box2"></div>
  
 </body>

</html>

CSS部分:

* {
 margin: 0px;
 padding: 0px;
}
.box2 hr {
 border: 3px solid blueviolet;
}
.box {
 width: 240px;
 height: 150px;
 border: 1px dotted red;
 text-align: center;
 margin: 20px auto;
 line-height: 150px;
}
.box2 {
 margin: 20px auto;
 width: 240px;
 padding: 30px;
 border: 3px solid pink ;
 font-size: 13px;

} 
.photoFrame {
 border-top: 15px solid #90EE90;
 border-bottom: 15px solid #90EE90;
 border-left: 15px solid #48D1CC;
 border-right: 15px solid #20B2AA;
 border-style: inset; 
 width: 200px;
 height: 200px;
 background: url(../imgs/ptoto.jpg);
 margin: 10px auto;
 position: relative;
 overflow: hidden;
}
img {
 position: absolute;
 width: 154px;
 height: 141px;
 left: 25px;
 top: 30px;
 right: 30px;
 bottom: 30px;
}
li {
 list-style-type: none;
}

JS部分

window.onload = function() {
 var box2 = document.querySelector(".box2");
 var box = document.querySelector(".box");
 var count = 0;
 function photoFrame() {
  var d1 = document.createElement("div");
  d1.className = "photoFrame";
  d1.style.marginTop = "30px";
  d1.style.marginLeft = "5px";
  var img = document.createElement("img");
  img.src = "";
  count++;
  img.id = 'img' + parseInt(count);
  d1.appendChild(img);
  return d1;
 }
 box.ondragover = function(ev) {
  ev.preventDefault();
 }
 box.ondrop = function(ev) {
  ev.preventDefault();
  var files = ev.dataTransfer.files;
  //获取当前文件的最新修改日期
  var lastModified = files[0].lastModifiedDate;
  //修改当前文件的最新修改日期的描述格式
  var lastModifiedStr = lastModified ? lastModified.toLocaleDateString() + ' ' + lastModified.toLocaleTimeString() : 'n/a';
  //设置图片下方状态信息栏描述内容
  var fileStatus = "<li>1.名称:" + files[0].name + "<br>2.类型:" + files[0].type + "<br>3.大小:" +
   files[0].size + "字节" + "<br>4.修改时间:" + lastModifiedStr + "</li>" + "<hr/>";
  box2.appendChild(photoFrame());
  box2.innerHTML = box2.innerHTML + fileStatus;
  //设置图片路径
  function setPath() {
   var fd = new FileReader();
   if(files[0].type.indexOf('image') != 1) {
    fd.readAsDataURL(files[0]);
    count++;
    var id = "img" + parseInt(count - 1);
    var img = document.getElementById(id);
    fd.onload = function() {
     var img = document.getElementById(id);
     img.src = this.result;
    }
   }
  }
  
  setPath();
 }
}

总结