<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>拖拽效果</title> <style> *{ margin: 0; padding: 0; } #div1{ position: absolute; width: 100px; height: 100px; background-color: pink; left: 50px; top: 100px; } </style> </head> <body> <div id="div1"></div> </body> <script> var div1=document.querySelector("#div1") // var div1.onmousedown=function(e){ var eto=e.pageY-div1.offsetTop //鼠标距离盒子上面距离 var ele=e.pageX-div1.offsetLeft //鼠标距离盒子左侧位置 document.onmousemove=function(e){ div1.style.left=e.pageX-ele+'px' div1.style.top=e.pageY-eto+'px' } } div1.onmouseup=function(){ document.onmousemove=null } </script> </html>