.drag {
    position: absolute;
    width: 50px;
    height: 50px;
    top: 200px;
    line-height: 50px;
    font-size: 1rem;
    color: #fff;
    left: 0;
    text-align: center;
    background-color: #000;
}
.target {
    position: absolute;
    width: 50px;
    height: 50px;
    background-color: #007aff;
    left: 0;
    line-height: 50px;
    font-size: 1rem;
    color: #fff;
    text-align: center;
}

<div id="drag1" style="left: 10px;" class="drag">drag_1</div>
<div id="tag1" style="left: 10px" class="target">tag_1</div>

new Drag({
    dragEle: "#drag1",
    targetEle: "#tag1",
    ondrag: function (obj) {
		    
    }
});