先设置网页的大屏幕的宽高,以及点击事件:
1 <div style="width : 2000px,height : 2000px" onmousedown = "ww()">
<div id = "ex" style = "width :100px,height:30px "></div>
</div>
再设置它的样式:
1 *{ margin :0px; padding:0px; }
然后是js代码部分:
1 function $(oId){ 2 return document.getElementById(oId); 3 } 4 5 function ww(){ 6 var w= document.documentElement.clienWidth; 7 var h = document.documentElement.clienHeight; 8 var ww = window.pageXOffset; //pageXOffset 属性返回文档在窗口左上角水平滚动的像素 9 var hh = window.pageYOffset; 10 // pageYOffset属性返回文档在窗口垂直方向滚动的像素 11 var sw = w/2+ww; 12 var sh = h/2+hh; 13 rs(sw,sh); //调用 14 } 15 16 function rs(sw,sh){ 17 $("ex").nextSibling.parentNode.removeChild( //先找到父节点再移除它 18 $("ex").nextSibling);//兄弟节点 19 var obj = document.createElement("div"); 20 obj.style.width = "100px"; 21 obj.style.height = "100px"; 22 obj.style.position = "absolute"; 23 obj.style.display = "block"; 24 obj.style.top = sh+"px"; 25 obj.style.left = sw+"px"; 26 obj.style.backgroundColor = "red"; 27 $("hehe").appendChild(obj); 28 } 29
[演示效果](http://localhost:63342/demo/work6.html)
原文地址:https://www.cnblogs.com/dzlx/p/8120501.html
时间: 2024-10-07 11:17:23