web 拖动

最新推荐文章于 2024-07-12 18:49:24 发布

徐畅Three

最新推荐文章于 2024-07-12 18:49:24 发布

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CC 4.0 BY-SA版权

分类专栏： web

本文链接：https://blog.youkuaiyun.com/KickAC/article/details/78288079

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<!DOCTYPE html>
<!--
This is a starter template page. Use this page to start your new project from
scratch. This page gets rid of all links and provides the needed markup only.
-->
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>拖动</title>
    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
    <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.min.css">
    <!-- Font Awesome -->
    <link rel="stylesheet" href="bower_components/font-awesome/css/font-awesome.min.css">
    <!-- Ionicons -->
    <link rel="stylesheet" href="bower_components/Ionicons/css/ionicons.min.css">
    <!-- Theme style -->
    <link rel="stylesheet" href="dist/css/AdminLTE.min.css">
    <!-- AdminLTE Skins. We have chosen the skin-blue for this starter
          page. However, you can choose any other skin. Make sure you
          apply the skin class to the body tag so the changes take effect. -->
    <link rel="stylesheet" href="dist/css/skins/skin-blue.min.css">
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
    <!-- Google Font -->
    <link rel="stylesheet"
          href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic">
    <style>
        body{
            background-color：#ddd;
            font-family：arial,verdana,sans-serif;
        }
        #drop1{
            width:200px;
            height:200px;
            border:1px solid black;
            background-color:white;
        }
        #drag1{
            width:50px;
            height:50px;
            background-color:black;
        }
    </style>
    <script>
        function allowDrop(ev)
        {
            ev.preventDefault();
        }
        function drag(ev)
        {
            ev.dataTransfer.setData("Text", ev.target.id);
            
        }
        function drop(ev)
        {
            var data = ev.dataTransfer.getData("Text");
            ev.target.appendChild(document.getElementById(data));
            ev.preventDefault();
        }
        window.onload = function () {
            var dragged = document.getElementById("drag1");
            var drophere = document.getElementById("drop1");
            dragged.ondragstart = drag;
            drophere.ondragover = allowDrop;
            drophere.ondrop = drop;
        }
    </script>
</head>
<!--
BODY TAG OPTIONS:
=================
Apply one or more of the following classes to get the
desired effect
|---------------------------------------------------------|
| SKINS         | skin-blue                               |
|               | skin-black                              |
|               | skin-purple                             |
|               | skin-yellow                             |
|               | skin-red                                |
|               | skin-green                              |
|---------------------------------------------------------|
|LAYOUT OPTIONS | fixed                                   |
|               | layout-boxed                            |
|               | layout-top-nav                          |
|               | sidebar-collapse                        |
|               | sidebar-mini                            |
|---------------------------------------------------------|
-->

<body>
    <div class="" id="drop1" ></div>
    <p>Drag the image blow into the box above</p>
    <div id="drag1" draggable="true">

    </div>
    <!-- REQUIRED JS SCRIPTS -->
    <!-- jQuery 3 -->
    <script src="bower_components/jquery/dist/jquery.min.js"></script>
    <!-- Bootstrap 3.3.7 -->
    <script src="bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
    <!-- AdminLTE App -->
    <script src="dist/js/adminlte.min.js"></script>
    <!-- Optionally, you can add Slimscroll and FastClick plugins.
         Both of these plugins are recommended to enhance the
         user experience. -->
</body>
</html>

上面是基于javascript的拖动

有三个函数来完成

function drag(ev)
{
ev.dataTransfer.setData("Text", ev.target.id);
}

这个函数在拖动开始时执行，把dataTransfer属性设置为拖动元素的id

function allowDrop(ev)
{
ev.preventDefault();
}

这个函数在拖动元素经过放置区域时执行，作用是阻止放置区域执行默认操作（默认不允许拖动）

function drop(ev)
{
var data = ev.dataTransfer.getData("Text");
ev.target.appendChild(document.getElementById(data));
ev.preventDefault();
}

这个函数会在元素被放下时执行，会读取dataTransfer属性的值来拖动元素的id，把这个元素设置为被放置的子元素。

但是略微有点麻烦，用JQuery会简单点

$("#draggable").draggable();

就让一个元素成为了可拖动元素。

$("#drappable").droppable();

让一个元素成为可放置元素。

可放置元素的属性

drop:function(){}

out:function(){}

<!DOCTYPE html>
<!--
This is a starter template page. Use this page to start your new project from
scratch. This page gets rid of all links and provides the needed markup only.
-->
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>拖动</title>
    <!-- Tell the browser to be responsive to screen width -->
    <meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
    <link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.min.css">
    <!-- Font Awesome -->
    <link rel="stylesheet" href="bower_components/font-awesome/css/font-awesome.min.css">
    <!-- Ionicons -->
    <link rel="stylesheet" href="bower_components/Ionicons/css/ionicons.min.css">
    <!-- Theme style -->
    <link rel="stylesheet" href="dist/css/AdminLTE.min.css">
    <!-- AdminLTE Skins. We have chosen the skin-blue for this starter
          page. However, you can choose any other skin. Make sure you
          apply the skin class to the body tag so the changes take effect. -->
    <link rel="stylesheet" href="dist/css/skins/skin-blue.min.css">
    <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
    <!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
    <!--[if lt IE 9]>
    <script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
    <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
    <!-- Google Font -->

    <link rel="stylesheet"
          href="https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,700,300italic,400italic,600italic">
    <!-- REQUIRED JS SCRIPTS -->
    <!-- jQuery 3 -->
    <script src="bower_components/jquery/dist/jquery.min.js"></script>
    <!-- Bootstrap 3.3.7 -->
    <script src="bower_components/bootstrap/dist/js/bootstrap.min.js"></script>
    <!-- AdminLTE App -->
    <script src="dist/js/adminlte.min.js"></script>
    <!-- Optionally, you can add Slimscroll and FastClick plugins.
         Both of these plugins are recommended to enhance the
         user experience. -->

    <style>
        body{
            background-color：#ddd;
            font-family：arial,verdana,sans-serif;
        }
        #dropdiv{
            width:200px;
            height:200px;
            border:1px solid black;
            background-color:white;
        }
        #dragdiv{
            width:100px;
            font:#ffffff;
            height:50px;
            background-color:black;
        }
    </style>
    <script>
        $("#dragdiv").draggable();
        $(function () {
            $("#dragdiv").draggable();
            $("#dropdiv").droppable({
                drop: function () { $("#dragdiv").text("dropped"); },
                out: function () { $("#dragdiv").text("off and running again"); }
            });
        });
        
    </script>
</head>
<body>
    <div id="dropdiv" >
        drop
    </div>
    <p>Drag the image blow into the box above</p>
    <div id="dragdiv">
        drag
    </div>
   
</body>
</html>