弹窗案例
1.首页代码
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>综合案例</title><style>*{margin: 0;padding: 0;box-sizing: border-box;}html,body{width: 100%;height: 100%;}.container{width: 100%;height: 100%;background-color: #f2f1f2;}header{width: 1200px;height: 50px;background-color: #fff;margin: 0 auto;display: flex;justify-content: space-between;align-items: center;}header div:nth-of-type(2){display: flex;gap: 20px;cursor: pointer;}header div:nth-of-type(2) span:hover{font-weight: bolder;color: red;}.login-box{display: none; overflow: hidden;width: 300px;height: 200px;background-color: #fff;border: solid 1px orangered;border-radius: 8px;box-shadow: rgba(255,0,0,0.5) 5px 5px 5px;position: absolute;left: 1150px;top: 50px;}.login-box .header{height: 40px;background-color: orangered;display: flex;justify-content: space-between;align-items: center;color: white;cursor: pointer;padding: 0 10px;}</style></head><body><div class="container"><header><div><span>欢迎访问OPENLAB EDU</span></div><div><span id="login">登录</span><span id="register">注册</span></div><div class="login-box" id="login-box"><div class="header" id="header"><span>会员登录</span><span id="close">[关闭]</span></div></div></header></div><script>let _login=document.getElementById("login");let _login_box=document.getElementById("login-box");_login.onclick=function(){_login_box.style.display="block";}let _close=document.getElementById("close");_close.onclick=function(){_login_box.style.display="none";}let _header=document.getElementById("header");document.onmousedown=function(event){let offsetX=event.offsetX;let offsetY=event.offsetY;_header.onmousemove=function(event2){let mouseX=event2.clientX;let mouseY=event2.clientY;let loginX=mouseX-offsetX;let loginY=mouseY-offsetY;if(loginX<=0){loginX=0;}if(loginY<=0){loginY=0;}let iw=window.innerWidth;let lw=getComputedStyle(_login_box).width;lw=parseInt(lw);if(loginX>=(iw-lw)){loginX=iw-lw;}let ih=window.innerHeight;let lh=getComputedStyle(_login_box).height;lh=parseInt(lh);if(loginY>=(ih-lh)){loginY=ih-lh;}_login_box.style.left=loginX+"px";_login_box.style.top=loginY+"px";}}document.onmouseup=function(){_header.onmousemove=null;}</script></body></html>2.展示效果
