1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="utf-8"> 5 <title></title> 6 <style> 7 #div1{width: 200px;height:200px;background-color:red;position: absolute;} 8 </style> 9 <script> 10 window.onload=function(){ 11 var oDiv=document.getElementById(‘div1‘); 12 var disX=0; 13 var disY=0; 14 15 oDiv.onmousedown=function(ev){ 16 var oEvent=ev||event; 17 18 disX=oEvent.clientX-oDiv.offsetLeft; 19 dixY=oEvent.clientY-oDiv.offsetTop; 20 21 if(oDiv.setCapture){ 22 document.onmousemove=mouseMove; 23 document.onmouseup=mouseUp; 24 oDiv.setCapture(); 25 } 26 else{ 27 document.onmousemove=mouseMove; 28 document.onmouseup=mouseUp; 29 } 30 31 function mouseMove(ev){ 32 var oEvent=ev||event; 33 var l=oEvent.clientX-disX; 34 var t=oEvent.clientY-disY; 35 36 oDiv.style.left=l+‘px‘; 37 oDiv.style.top=t+‘px‘; 38 } 39 function mouseUp(){ 40 this.onmousemove=null; 41 this.onmouseup=null; 42 43 if(oDiv.releaseCapture){ 44 oDiv.releaseCapture(); 45 } 46 } 47 48 return false; 49 } 50 } 51 </script> 52 </head> 53 <body> 54 fawegagaerhbartharehaha 55 <p>awetgaegarehaerheraf</p> 56 <p>awetgaegarehaerheraf</p> 57 <div id="div1"> 58 fawetawgagaer 59 agaregarehgaer 60 </div> 61 <p>awetgaegarehaerheraf</p> 62 </body> 63 </html>
原文：https://www.cnblogs.com/shangec/p/12801336.html
