IT俱乐部 HTML HTML+CSS+JS模仿win10亮度调节效果的示例代码

HTML+CSS+JS模仿win10亮度调节效果的示例代码

发布: 2024年 9月 16日 557阅读

HTML+CSS+JS模仿win10亮度调节效果

代码

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<title>模仿win10的亮度调节</title>
    .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:-12.5px;
        position:relative;
        top:0;
        left:0;
    }
    .control_bar_cursor:hover{
        background:white;
    }
    #control_bar_mask{
        margin-top:-203px;
        width:0px;
    }
    .mask{
        position:fixed;
        bottom:0;
        top:0;
        left:0;
        right:0;
        background:black;
        z-index:-1;
    }
<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>
 
 
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  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;
        };
    };
};

1.将各个元素的样子写出来

​这里为了方便好观察给body添加了一个背景颜色

html

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

css

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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;
}

效果图

2. 将各个元素叠到一起

css

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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:-12.5px;
    position:relative;
    top:0;
    left:0;
}
.control_bar_cursor:hover{
    background:white;
}
#control_bar_mask{
    margin-top:-203px;
    width:100px;
}

这里为了显示遮罩效果把遮罩层的div宽度设小了

3. 添加js

js

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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  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. 添加一个mask用控制条来控制其透明度达到亮度调节效果

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<div class="mask"></div>
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.mask{
    position:fixed;
    bottom:0;
    top:0;
    left:0;
    right:0;
    background:black;
    z-index:-1;
}
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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  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

到此这篇关于HTML+CSS+JS模仿win10亮度调节效果的示例代码的文章就介绍到这了,更多相关html css win10 亮度调节内容请搜索IT俱乐部以前的文章或继续浏览下面的相关文章，希望大家以后多多支持IT俱乐部！

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