HTML+CSS+JS效仿win10亮度调整实际效果的示例编码

HTML+CSS+JS效仿win10亮度调整实际效果

编码

<!doctype html>
<html>
	<head>
		<meta charset="utf⑻">
		<title>效仿win10的亮度调整</title>
		<style>
			.control_bar{
				height:200px;
				width:500px;
				border-bottom:3px solid #888888;
				
			}
			.control_bar_cursor{
				height:25px;
				width:8px;
				background: #505151;
				border-radius:5px;
				margin-top:⑴2.5px;
				position:relative;
				top:0;
				left:0;
			}
			.control_bar_cursor:hover{
				background:white;
			}
			#control_bar_mask{
				margin-top:⑵03px;
				width:0px;
			}
			.mask{
				position:fixed;
				bottom:0;
				top:0;
				left:0;
				right:0;
				background:black;
				z-index:⑴;
			}
		</style>
	</head>
	<body>
		<div class="mask"></div>
		<div class="control_bar"></div>
		<div class="control_bar" style="border-bottom:3px solid #505151;" id="control_bar_mask"></div>
		<div class="control_bar_cursor"></div>
	</body>
	<script>
		window.onload = function(){
			var control_bar = document.getElementsByClassName("control_bar")[0];
			var control_bar_mask = document.getElementById("control_bar_mask");
			var control_bar_cursor = document.getElementsByClassName("control_bar_cursor")[0];
			var def_left = control_bar_cursor.offsetLeft;
			var mask = document.getElementsByClassName("mask")[0];
			document.body.onmousedown = function(){
				window.onmousemove = function(){
					var cursor_X = event.clientX;
					var cursor_Y = event.clientY;
					if(cursor_X < def_left){
						control_bar_cursor.style.left = 0;
					}else if(cursor_X > control_bar.offsetWidth + def_left){
						control_bar_cursor.style.left = control_bar.offsetWidth;
					}else{
						control_bar_cursor.style.left = cursor_X - def_left + "px";
					}
					//亮度比
					var proportion = parseInt(control_bar_cursor.offsetLeft - def_left) / parseInt(control_bar.offsetWidth - 1);
					control_bar_mask.style.width = proportion * control_bar.offsetWidth + "px";
					mask.style.opacity = 1 - proportion;
					};
				window.onmouseup = function(){
					window.onmousemove = null;
				};
			};
		};
	</script>
</html>

1.将各个元素的模样写出来

​这里以便便捷好观查给body加上了1个情况色调

html

<div class="control_bar">
</div>
<div class="control_bar" style="border-bottom:3px solid #505151;"  
id="control_bar_mask>
</div>
<div class="control_bar_cursor">
</div>

css

body{
    background:back;
}
.control_bar{
    height:200px;
    width:500px;
    border-bottom:3px solid #888888;
}
.control_bar_cursor{
    height:25px;
    width:8px;
    background: #505151;
    border-radius:5px;
}

实际效果图

2. 将各个元素叠到1起

css

body{
    background:black;
}
.control_bar{
    height:200px;
    width:500px;
    border-bottom:3px solid #888888;

}
.control_bar_cursor{
    height:25px;
    width:8px;
    background: #505151;
    border-radius:5px;
    margin-top:⑴2.5px;
    position:relative;
    top:0;
    left:0;
}
.control_bar_cursor:hover{
    background:white;
}
#control_bar_mask{
    margin-top:⑵03px;
    width:100px;
}

这里以便显示信息遮罩实际效果把遮罩层的div宽度设小了

3. 加上js

js

window.onload = function(){
    var control_bar = document.getElementsByClassName("control_bar")[0];
    var control_bar_mask = document.getElementById("control_bar_mask");
    var control_bar_cursor = document.getElementsByClassName("control_bar_cursor")[0];
    var def_left = control_bar_cursor.offsetLeft;
    document.body.onmousedown = function(){
        window.onmousemove = function(){
            var cursor_X = event.clientX;
            var cursor_Y = event.clientY;
            if(cursor_X < def_left){
                control_bar_cursor.style.left = 0;
            }else if(cursor_X > control_bar.offsetWidth + def_left){
                control_bar_cursor.style.left = control_bar.offsetWidth;
            }else{
                control_bar_cursor.style.left = cursor_X - def_left + "px";
            }
            var proportion = parseInt(control_bar_cursor.offsetLeft - def_left) / parseInt(control_bar.offsetWidth - 1);
            control_bar_mask.style.width = proportion * control_bar.offsetWidth + "px";
        };
        window.onmouseup = function(){
            window.onmousemove = null;
        };
    };
};

4. 加上1个mask用操纵条来操纵其全透明度做到亮度调整实际效果

<div class="mask"></div>
.mask{
    position:fixed;
    bottom:0;
    top:0;
    left:0;
    right:0;
    background:black;
    z-index:⑴;
}
window.onload = function(){
    var control_bar = document.getElementsByClassName("control_bar")[0];
    var control_bar_mask = document.getElementById("control_bar_mask");
    var control_bar_cursor = document.getElementsByClassName("control_bar_cursor")[0];
    var def_left = control_bar_cursor.offsetLeft;
    var mask = document.getElementsByClassName("mask")[0];
    document.body.onmousedown = function(){
        window.onmousemove = function(){
            var cursor_X = event.clientX;
            var cursor_Y = event.clientY;
            if(cursor_X < def_left){
                control_bar_cursor.style.left = 0;
            }else if(cursor_X > control_bar.offsetWidth + def_left){
                control_bar_cursor.style.left = control_bar.offsetWidth;
            }else{
                control_bar_cursor.style.left = cursor_X - def_left + "px";
            }
            //亮度比
            var proportion = parseInt(control_bar_cursor.offsetLeft - def_left) / parseInt(control_bar.offsetWidth - 1);
            control_bar_mask.style.width = proportion * control_bar.offsetWidth + "px";
            mask.style.opacity = 1 - proportion;
        };
        window.onmouseup = function(){
            window.onmousemove = null;
        };
    };
};

总结

到此这篇有关HTML+CSS+JS效仿win10亮度调整实际效果的示例编码的文章内容就详细介绍到这了,更多有关html css win10 亮度调整內容请检索脚本制作之家之前的文章内容或再次访问下面的有关文章内容，期待大伙儿之后多多适用脚本制作之家！