jQuery实现大屏滚动播放的效果

傷城~ 2022-10-10 12:44 136阅读 0赞

场景需求：  
在大屏幕上，消息会进行一个实时滚动播报的效果，将现有的内容进行一个来回滚动的播放~~

代码：

<!DOCTYPE HTML>
    <html xmlns:th="http://www.thymeleaf.org">
    	<head>
    		<title>复选框checkbox自定义样式</title>
    		<meta name="viewport" content="width=device-width, initial-scale=1">
    		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    		<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
    		<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
    		<script src="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
    		<style>
    			* {
            margin: 0;
            padding: 0;
        }
        
        .contScend {
            width: 400px;
            height: 200px;
            background: #000000;
            margin: 20px auto;
            overflow: hidden;
        }
        
        .contScend ul {
            list-style: none;
            width: 100%;
            height: 100%;
    		color:red;
    		font-size: 13px;
        }
        
        .contScend ul li {
            width: 100%;
            height: 40px;
            box-sizing: border-box;
            line-height: 40px;
            text-align: center;
        }
    
            </style>
    	</head>
    	<body>
    		
    		<div class="contScend">
    
    		</div>
    	</body>
    	<script type="text/javascript">
    		$.ajax({
    			url: "test.json",
    			type: 'GET',
    			dataType: 'json',
    			success: function(data) {
    				var html = "";
    				html += '<ul>';
    				$.each(data, function(i, item) { //                
    					html += '<li>' + item.name + ':' + item.numb + '人' + '</li>';
    
    				});
    				html += '</ul>';
    				$(".contScend").html(html);
    				scroll();
    			}
    		});
    
    		function scroll() {
    			//获得当前<ul>
    			var $uList = $(".contScend ul");
    			var timer = null;
    			//触摸清空定时器
    			$uList.hover(function() {
    					clearInterval(timer);
    				},
    				function() { //离开启动定时器
    					timer = setInterval(function() {
    							scrollList($uList);
    						},
    						1000);
    				}).trigger("mouseleave"); //自动触发触摸事件
    			//滚动动画
    			function scrollList(obj) {
    				//获得当前<li>的高度
    				var scrollHeight = $("ul li:first").height();
    				//滚动出一个<li>的高度
    				$uList.stop().animate({
    						marginTop: -scrollHeight
    					},
    					600,
    					function() {
    						//动画结束后，将当前<ul>marginTop置为初始值0状态，再将第一个<li>拼接到末尾。
    						$uList.css({
    							marginTop: 0
    						}).find("li:first").appendTo($uList);
    					});
    			}
    		}
    	</script>
    </html>

test.json

[{
    	"name": "体验区统计",
    	"numb": 0
    }, {
    	"name": "test909",
    	"numb": 0
    }, {
    	"name": "test910",
    	"numb": 0
    }, {
    	"name": "111",
    	"numb": 0
    }, {
    	"name": "test",
    	"numb": 0
    }, {
    	"name": "test11111",
    	"numb": 0
    }, {
    	"name": "记忆区统计",
    	"numb": 0
    }]

效果如下：  
![f56a5091c9b2490a303c7d4b7b8cb684.gif][]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDc2MzU2OQ_size_16_color_FFFFFF_t_70]

[f56a5091c9b2490a303c7d4b7b8cb684.gif]: /images/20221005/66c17ec5bf1b4c598bb9790766efa4b6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDc2MzU2OQ_size_16_color_FFFFFF_t_70]: /images/20221005/820a0f0042bd4d798130efbbee33c4ea.png