html5拖动滑块

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html5中input有增加type=range。这为拖动滑块提供了很大的便利。下面是他的属性：

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <style>

        .main{ position: relative;width: 500px;}

        #range {

            -webkit-appearance: none;

            background: #;

            height: 3px;

            outline: none;

            margin: ;

            width: 500px;

        }

        input[type=range]::-webkit-slider-thumb{

            -webkit-appearance: none;

            width: 20px;

            height: 20px;

            border-radius: %;

            background: red;

        }

        p{

            position: absolute;

            width: 0px;

            height: 3px;

            background: green;

            top: -2px;

            left: ;

        }

        .range{

            position: relative;

        }

        .value{

            padding: 10px;

            background: #ffebc7;

            font-size: 40px;

            text-align: center;

            margin:  auto;

        }

    </style>

</head>

<body>

<div class="main">

    <div class="value"></div>

    <div class="range">

        <input type="range" max="" min="" id="range" step="0.1" value="">

        <p></p>

    </div>

</div>

</body>

<script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>

<script>

    $(".value").html("")

    var rangeSwitch=function () {

        var x=$("#range").val();

        $("p").css({"width":(x/)**0.96})//乘的0.96是因为要不然绿色的颜色会有部分盖住滑动按钮（500-20）/500=0.96;

        $(".value").html(x)

    }

    $("#range").on("input",rangeSwitch)

</script>

</html>