html代码
<div id="idouterdiv" class="csouterdiv"> </div>
css代码
body { background-color:#232429; } .csouterdiv { width:256px; height:146px; background-color:white; position:absolute; top:50%; left:50%; transform:translatex(-50%) translatey(-50%); -moz-transform:translatex(-50%) translatey(-50%); -webkit-transform:translatex(-50%) translatey(-50%); -ms-transform:translatex(-50%) translatey(-50%); border-radius:5px; box-shadow:3px 3px 10px blue; }
js代码
function dragfunc(id) { var drag = document.getelementbyid(id); drag.onmousedown = function(event) { var ev = event || window.event; event.stoppropagation(); var disx = ev.clientx - drag.offsetleft; var disy = ev.clienty - drag.offsettop; document.onmousemove = function(event) { var ev = event || window.event; drag.style.left = ev.clientx - disx + "px"; drag.style.top = ev.clienty - disy + "px"; drag.style.cursor = "move"; }; }; drag.onmouseup = function() { document.onmousemove = null; this.style.cursor = "default"; }; }; dragfunc("idouterdiv");
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