1. 程式人生 > >H5頁面出現彈窗時,阻止滾動條滾動

H5頁面出現彈窗時,阻止滾動條滾動

<!DOCTYPE HTML>
<html>

	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
		<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum-scale=1.0,minimum-scale=1.0,user-scalable=no" />
		<title>手機版彈窗時去掉滾動條,關閉後顯示滾動條</title>
	</head>
	<script type="text/javascript" src="http://www.86y.org/js/jq1.8.3.js"></script>
	<style>
		.content {
			height: 2000px
		}
		
		.popwind {
			display: none;
		}
		
		.pop_ask {
			width: 90%;
			position: fixed;
			z-index: 11;
			left: 5%;
			top: 10%;
			height: 80%;
			overflow: hidden;
		}
		
		.pop_title {
			background: #18b4ed;
			height: 50px;
			line-height: 50px;
			border-radius: 6px 6px 0 0;
			padding: 0 15px;
			color: #fff;
		}
		
		.pop_title a {
			text-indent: -222em;
			background: url(data:image/png;base64,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) no-repeat 0 0;
			width: 20px;
			height: 20px;
			margin-top: 15px;
		}
		
		.pop_bg {
			background: #000;
			opacity: 0.5;
			width: 100%;
			height: 100%;
			position: fixed;
			z-index: 10;
			left: 0;
			top: 0;
		}
		
		.pop_content {
			background: #fff;
			border-radius: 0 0 6px 6px;
			height: 90%;
			overflow: hidden;
		}
		
		.fr {
			float: right;
		}
	</style>

	<body>
		<div class="popwind">
			<div class="pop_ask">
				<div class="pop_title">任務要求
					<a href="javascript:;" class="fr pop_close">關閉</a>
				</div>
				<div class="pop_content">
					<div class="ask_detail">
						<div>彈窗內容<br /><img src="https://ss0.bdstatic.com/6ONWsjip0QIZ8tyhnq/it/u=648300297,3284313282&fm=77&w_h=121_75&cs=1136402502,639612303" /></div>
					</div>
				</div>
			</div>
			<div class="pop_bg"></div>
		</div>
		<div class="content">
			內容固定高度為1000px<br />
			<a href="#" class="ask">點選顯示彈窗</a>
		</div>
	</body>

</html>
<script>
	function ask() {
		$(".ask").click(function() {
			$("body").css("overflow", "hidden");
			$(".popwind").show();
			$('body').bind("touchmove", function(e) {
				e.preventDefault();
			});
		});
	}
	ask();
	$(".pop_close").click(function() {
		$("body").css("overflow", "auto");
		$(".popwind").hide();
		$("body").unbind("touchmove");
	});
</script>
核心:

1、在彈窗出現時,給body設定

$("body").css("overflow", "hidden");

2、並且給body繫結阻止滑動事件的預設行為

$('body').bind("touchmove", function(e) {
	e.preventDefault();
});

3、在彈窗消失時,body解綁阻止預設行為的事件

$("body").unbind("touchmove");

4、並且給body設定

$("body").css("overflow", "auto");