本文实例为大家分享了JS实现拖拽效果的具体代码,供大家参考,具体内容如下
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> #wrap { position: relative; border: 1px solid #000; width: 800px; height: 500px; } #drog { position: absolute; left: 0; top: 0; width: 100px; height: 100px; background: red; cursor: move; } </style> </head> <body> <div id="wrap"> <div id="drog"></div> </div> <script type="text/javascript" src="startmove.js"></script> <script type="text/javascript"> (function(){ var drog = document.querySelector('#drog'); /* 1.记录按下的时候的鼠标位置 2.记录按下的时候元素的位置 */ drog.onmousedown = function(e){ var startElY = css(drog,"top"); var startElX = css(drog,"left"); var startMouseX = e.clientX; var startMouseY = e.clientY; /* 求出鼠标移动的距离, 操作元素也移动相应的距离 为了可以一直跟随,所以添加给document */ document.onmousemove = function(e){ var nowMouseX = e.clientX; var nowMouseY = e.clientY; var disX = nowMouseX - startMouseX; var disY = nowMouseY - startMouseY; var x = disX + startElX; var y = disY + startElY; css(drog,"left",x); css(drog,"top",y); }; document.onmouseup = function(){ document.onmousemove = null; document.onmouseup = null; }; }; })(); </script> </body> </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呐喊教程。
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