弹窗居中显示实现-优快云博客

本文链接：https://blog.youkuaiyun.com/csq2804106929/article/details/49796581

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style>
	.popup{width: 300px;
		   height: 300px;
		   position: absolute;
		   border: 1px solid red;
		}
	#div1{
		position: absolute;
		top:0;
		right: 0;
	}
	</style>
	<script src="jquery-2.1.4.js"></script>
	<script>
	$(function(){
		$('#btn1').click(function(){
			var odiv=$('<div class="popup">csq<div id="div1">X</div></div>');
			$('body').append(odiv);

			odiv.css('left',($(window).width()-odiv.outerWidth())/2);
			odiv.css('top',($(window).height()-odiv.outerHeight())/2);

			$(window).on('resize scroll',function(){
			odiv.css('left',($(window).width()-odiv.outerWidth())/2);
			odiv.css('top',($(window).height()-odiv.outerHeight())/2 + $(window).scrollTop());	
			});
			
			$('#div1').click(function(){
				odiv.remove();
			})
		})
	});
	/*
	1.布局写样式
	2.往body里添加弹窗
	3.设置弹窗位置
	4.关闭弹窗
	*/
	</script>
</head>
<body style="height:1500px">
	<input type="button" value="点击" id="btn1">
	<!-- <div class="popup">
		csq
	</div> -->
</body>
</html>

jquery编写弹窗