JavaScript实现登录滑动验证

客官°小女子只卖身不卖艺 2023-07-20 05:52 29阅读 0赞

来自于GitHub，  
[如何快速访问GitHub][GitHub]

先附上效果图  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ExNDM5Nzc1NTIw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][2020033117322123.png]

## 划到一半停止回自己回去的 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ExNDM5Nzc1NTIw_size_16_color_FFFFFF_t_70 1]  
PS：  
附上代码，有需要自己更改，

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>滑块解锁封装js方法</title>
        
        <link rel="stylesheet" href="font/iconfont.css">
        <style>
            *{ 
                padding: 0;
                margin: 0;
            }
            #box{ 
                position: relative;
                width: 300px;
                height: 40px;
                margin: 0 auto;
                margin-top: 10px;
                background-color: #e8e8e8;
                box-shadow: 1px 1px 5px rgba(0,0,0,0.2);
            }
            .bgColor{ 
                position: absolute;
                left:0;
                top:0;
                width:40px;
                height: 40px;
                background-color: lightblue;
            }
            .txt{ 
                position: absolute;
                width: 100%;
                height: 40px;
                line-height: 40px;
                font-size: 14px;
                color: #000;
                text-align: center;
            }
            .slider{ 
                position: absolute;
                left:0;
                top:0;
                width: 50px;
                height: 38px;
                border: 1px solid #ccc;
                background: #fff;
                text-align: center;
                cursor: move;
            }
            .slider>i{ 
                position: absolute;
                top:50%;
                left:50%;
                transform: translate(-50%,-50%);
            }
            .slider.active>i{ 
                color:green;
            }
            .btn { 
            position: absolute;
            width: 40px;
            height: 32px;
            background: #fff url(data:image/png;base64,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) center no-repeat;
            background-size: 13px;//不设置这个属性，背景图片会不成比例的显示
            border: 1px solid #ccc;
            cursor: move;
            }
            .btns { 
            position: absolute;
            width: 40px;
            height: 32px;
            background: #fff url(data:image/png;base64,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) center no-repeat;
            background-size: 13px;//不设置这个属性，背景图片会不成比例的显示
            border: 1px solid #ccc;
            cursor: move;
            }
        </style>
    </head>
    <body>
        <div id="box" onselectstart="return false;">
            <div class="bgColor"></div>
            <div class="txt" >滑动解锁</div>
            
            <div class="slider"><i class="btn"></i></div>
        </div>
        <script>
            //一、定义了一个获取元素的方法
            function getEle(selector){ 
                return document.querySelector(selector);
            }
            //二、获取到需要用到的DOM元素
            var box = getEle("#box"),//容器
                bgColor = getEle(".bgColor"),//背景色
                txt = getEle(".txt"),//文本
                slider = getEle(".slider"),//滑块
                icon = getEle(".slider>i"),
                successMoveDistance = box.offsetWidth- slider.offsetWidth,//解锁需要滑动的距离
                downX,//用于存放鼠标按下时的位置
                isSuccess = false;//是否解锁成功的标志，默认不成功
     
            //三、给滑块添加鼠标按下事件
            slider.onmousedown = mousedownHandler;
     
            //3.1鼠标按下事件的方法实现
            function mousedownHandler(e){ 
                bgColor.style.transition = "";
                slider.style.transition = "";
                var e = e || window.event || e.which;
                downX = e.clientX;
                //在鼠标按下时，分别给鼠标添加移动和松开事件
                document.onmousemove = mousemoveHandler;
                document.onmouseup = mouseupHandler;
            };
     
            //四、定义一个获取鼠标当前需要移动多少距离的方法
            function getOffsetX(offset,min,max){ 
                if(offset < min){ 
                    offset = min;
                }else if(offset > max){ 
                    offset = max;
                }
                return offset;
            }
     
            //3.1.1鼠标移动事件的方法实现
            function mousemoveHandler(e){ 
                var e = e || window.event || e.which;
                var moveX = e.clientX;
                var offsetX = getOffsetX(moveX - downX,0,successMoveDistance);
                bgColor.style.width = offsetX + "px";
                slider.style.left = offsetX + "px";
     
                if(offsetX == successMoveDistance){ 
                    success();
                }
                //如果不设置滑块滑动时会出现问题（目前还不知道为什么）
                e.preventDefault();
            };
     
            //3.1.2鼠标松开事件的方法实现
            function mouseupHandler(e){ 
                if(!isSuccess){ 
                    bgColor.style.width = 0 + "px";
                    slider.style.left = 0 + "px";
                    bgColor.style.transition = "width 0.8s linear";
                    slider.style.transition = "left 0.8s linear";
                }
                document.onmousemove = null;
                document.onmouseup = null;
            };
     
            //五、定义一个滑块解锁成功的方法
            function success(){ 
                isSuccess = true;
                txt.innerHTML = "解锁成功";
                bgColor.style.backgroundColor ="lightgreen";
                slider.className = "slider active";
                icon.className = "btns";
                //滑动成功时，移除鼠标按下事件和鼠标移动事件
                slider.onmousedown = null;
                document.onmousemove = null;
            };
        </script>
    </body>
    </html>

[GitHub]: https://blog.csdn.net/a1439775520/article/details/105155813
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ExNDM5Nzc1NTIw_size_16_color_FFFFFF_t_70]: /images/20230528/d82d2cf692fa449cab508eacef982ac9.png
[2020033117322123.png]: /images/20230528/c5bbe6f5902943dba66c361e02010709.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ExNDM5Nzc1NTIw_size_16_color_FFFFFF_t_70 1]: /images/20230528/6d5a8cabe4584b88b270e12299d6bbc5.png