js盒子拖拽 js实现盒子拖拽动画效果
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<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"> <title>Document</title> <script src="jquery.js"></script> <style> * { margin: 0; padding: 0; } .wrap { width: 400px; height: 200px; border: 1px solid #ccc; border-right-color: red; position: absolute; top: 50%; left: 50%; margin-left: -200px; margin-top: -100px; box-sizing: border-box; } .wrap .head { height: 40px; padding-left: 4px; padding-right: 4px; background-color: #ccc; box-sizing: border-box; line-height: 40px; user-select: none; } .head:hover { cursor: move; } .head span { float: left; } #close { float: right; } #close:hover { cursor: pointer; } </style> </head> <body> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <p>tom</p> <div class="wrap"> <div class="head"> <span>试着拖拽我</span> <span id="close">【关闭】</span> </div> </div> <script> let wrap = document.querySelector('.wrap'); let close = document.getElementById('close'); let head = document.querySelector('.head'); head.onmousedown = function (e) { // 获得鼠标在 head 中的坐标 let x = e.pageX - wrap.offsetLeft; let y = e.pageY - wrap.offsetTop; console.log(x, y); document.onmousemove = function (e) { let xx = e.pageX - x; let yy = e.pageY - y; // 设置边界限制 xx = xx < 0 ? 0 : xx; yy = yy < 0 ? 0 : yy; if (xx >= innerWidth - wrap.offsetWidth) { document.documentElement.scrollLeft = 20; } else { document.documentElement.scrollLeft = 0; } xx = xx > innerWidth - wrap.offsetWidth ? innerWidth-wrap.offsetWidth : xx; yy = yy > innerHeight - wrap.offsetHeight + document.documentElement.scrollTop ? innerHeight - wrap.offsetHeight + document.documentElement.scrollTop : yy; wrap.style.left = xx + 'px'; wrap.style.top = yy + 'px'; // 禁止X滚动轴 document.body.style.overflowX = 'hidden'; wrap.style.marginLeft = 0; wrap.style.marginTop = 0; }; }; document.onmouseup = function () { document.onmousemove = null; }; close.onclick = function () { wrap.style.display = 'none'; }; </script> </body> </html>
实现效果:
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