Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                
    <div class="src">
        <div class="dragabled">
            <div class="txt" id="txt">
                所有的文字都可拖拽。
                <p draggable="true">此段文字设置了属性draggable="true"</p>   
            </div>
            <div class="url" id="url">
                <a href="http://weiqinl.com" target="_blank">我是url:http://weiqinl.com</a>
            </div>
            <img class="img" id="tupian1" src="https://www.baidu.com/img/baidu_jgylogo3.gif" alt="图片1" />
            <img class="img" id="tupian2" src="https://www.cnblogs.com/images/logo_small.gif" alt="图片2" />
        </div>
        <div id='target' class="dropabled target">Drop Here</div>
    </div>
              
            
!

CSS

              
                
.src {
    display: flex;
}

.dropabled {
    flex: 1;
}

.txt {
    color: green;
}

.img {
    width: 100px;
    height: 100px;
    border: 1px solid gray;
}

.target {
    width: 200px;
    height: 200px;
    line-height: 200px;
    text-align: center;
    border: 1px solid gray;
    color: red;
}
              
            
!

JS

              
                
        var dragSrc = document.getElementById('txt')
        var target = document.getElementById('target')

        dragSrc.ondragstart = handle_start
        dragSrc.ondrag = handle_drag
        dragSrc.ondragend = handle_end

        function handle_start(e) {
            // none   move copy link
            e.dataTransfer.effectAllowed = "linkMove";
            console.log('dragstart-在元素开始被拖动时候触发')
        }

        function handle_drag() {
            console.log('drag-在元素被拖动时候反复触发')
        }

        function handle_end() {
            console.log('dragend-在拖动操作完成时触发')
        }


        target.ondragenter = handle_enter
        target.ondragover = handle_over
        target.ondragleave = handle_leave

        target.ondrop = handle_drop

        function handle_enter(e) {
            console.log('handle_enter-当元素进入目的地时触发')
            // 阻止浏览器默认行为
            e.preventDefault()
        }

        function handle_over(e) {
            // 设置dropEffect属性值为move  link  copy none
            e.dataTransfer.dropEffect = "link"
            // console.log('handle_over-当元素在目的地时触发')
            // 阻止浏览器默认行为
            e.preventDefault()
        }

        function handle_leave(e) {
            console.log('handle_leave-当元素离开目的地时触发')
            // 阻止浏览器默认行为
            // e.preventDefault()
        }

        function handle_drop(e) {
          e.stopPropagation();// 不再派发事件。解决Firefox浏览器,打开新窗口的问题。
            console.log('handle_drop-当元素在目的地放下时触发')
            var t = Date.now()
            target.innerHTML = ''
            target.append(t + '-拖放触发的事件。')
            e.preventDefault()
            console.log(e.dataTransfer.types)
            // 打印每种格式类型
            if (e.dataTransfer.types != null) {
                for (var i = 0; i < e.dataTransfer.types.length; i++) {
                    console.log("... types[" + i + "] = " + e.dataTransfer.types[i]);
                }
            }
            // 打印每个item的“kind”和“type”属性值
            if (e.dataTransfer.items != null) {
                for (var i = 0; i < e.dataTransfer.items.length; i++) {
                    console.log("... items[" + i + "].kind = " + e.dataTransfer.items[i].kind + " ; type = " + e.dataTransfer
                        .items[i].type);
                }
            }
        }
              
            
!
999px

Console