这篇文章主要为大家详细介绍了JS实现碰撞检测效果，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
本文实例为大家分享了JS实现碰撞检测效果的具体代码，供大家参考，具体内容如下
<head> <meta charset="UTF-8"> <title></title> <style type="text/css"> #all{ width: 500px; height: 500px; border: 2px solid sandybrown; position: relative; margin: 0 auto; } #div1{ width: 50px; height: 50px; background-color: red; position: absolute; } #center{ width: 150px; height: 150px; background-color: black; position: absolute; margin: 175px; } </style> </head> <body> <div> <div></div> <div></div> </div> <script type="text/javascript"> var oAll = document.getElementById("all"); var oDiv1 = document.getElementById("div1"); var oCenter = document.getElementById("center"); var maxL = oAll.clientWidth - oDiv1.clientWidth; var maxT = oAll.clientHeight - oDiv1.clientHeight; oDiv1.onmousedown = function(){ var ev = ev || window.event; var lessX = ev.clientX - oDiv1.offsetLeft; var lessY = ev.clientY - oDiv1.offsetTop; document.onmousemove = function(){ var ev = ev || window.event; var posL = ev.clientX - lessX; var posT = ev.clientY - lessY; if(oCenter.offsetLeft-oDiv1.offsetWidth<posL && posL<325 && oCenter.offsetLeft-oDiv1.offsetWidth<posT && posT<325 ){ oCenter.style.backgroundColor = "red" }else{ oCenter.style.backgroundColor = "black" } if(posL<0){ posL = 0; } if(posT<0){ posT = 0; } if(posL>maxL){ posL = maxL; } if(posT>maxT){ posT = maxT; } oDiv1.style.left = posL + "px"; oDiv1.style.top = posT + "px"; } } document.onmouseup = function(){ document.onmousemove = null; oDiv1.onmousemove = null; } </script> </body>
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脚本之家。
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