js实现鼠标的拖曳效果，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
效果如下：
下面是代码：
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<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>鼠标拖曳效果</title> <style> body{ background:black; } #box{ position:absolute; background: rgb(148, 143, 143); width: 400px; height: 200px; box-sizing: border-box; border: white 2px solid; } .topTitle{ cursor: move; border-bottom: white 2px solid; background: #cccccc; text-align: right; color: white; height: 20px; line-height: 20px; } .content >div{ background: rgb(148, 143, 143); height: 50px; line-height: 50px; color: white; text-align: left; } </style></head><body> <div id="box"> <div class="topTitle"><a href="#" >点击回放拖动轨迹</a></div> <div class="content"> <div>Drag:</div> <div>offsetTop:</div> <div>offsetLeft</div> </div> </div></body><script> var oBox=document.getElementById("box"); var oTopTitle=document.getElementsByClassName("topTitle")[0]; var aDiv= document.querySelectorAll(".content >div"); var offWidth=document.documentElement.clientWidth; var clHight=document.documentElement.clientHeight; var i,t; var state="false"; var oText=document.querySelector(".topTitle a"); oTopTitle.onmousedown=function(even){ var OffsetE=even||window.event;var flag=true;//设立边界： document.onmousemove=function(even){ state="true"; var ClientE=even||window.event; l=ClientE.clientX-OffsetE.offsetX; t=ClientE.clientY-OffsetE.offsetY; recorde(l,t,flag); if(l<0){ l=0; } if(t<0){ t=0; } if(l>offWidth-oBox.offsetWidth){ l=offWidth-oBox.offsetWidth; } if(t>clHight-oBox.offsetHeight){ t=clHight-oBox.offsetHeight; } oBox.style.left=l+"px"; oBox.style.top=t+"px"; } document.onmouseup=function(){ console.log(1); state="false"; document.onmousemove=null; document.onmouseup=null; } OffsetE.preventDefault(); flag=false; } oText.onclick=function(){ var reback=recorde(l,t); var index=reback.strX.length; setInterval(function(){ if(index<0){ clearInterval(); return; } oBox.style.left=reback.strX[index--] +"px"; oBox.style.top=reback.strY[index--]+"px"; },30); strX=[]; strY=[]; }var strX=[];var strY=[]; function recorde(offsetTop,offsetLeft,flag){ var text1=aDiv[1].innerText; aDiv[0].innerHTML="Drag:"+"<span style='color:yellow'>"+state+"</span>"; aDiv[1].innerHTML="offsetTop:"+"<span style='color:yellow'>"+offsetTop+"</span>"; aDiv[2].innerHTML="offsetLeft:"+"<span style='color:yellow'>"+offsetLeft+"</span>"; strX.push(offsetTop) ; strY.push(offsetLeft); // console.log(strX); // console.log(strY); return { strX, strY } }</script></html> |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/weixin_42590083/article/details/111885913
