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复制代码 代码如下:
<html>
<script type="text/javascript" src="jquery.js"></script>
<style>
.d_b{
    height: 20px;
    width: 10px;
    display: inline-block;
    background-color: black;
    position: relative;
    vertical-align: middle;
    top: -15px;
    left: -5px;
}
</style>
<div id="d" style="width:200px;cursor: pointer;" max=100 min=0 value=10 >
<div style="height:10px; width:100%; background-color:green" ></div>
<b class="d_b"></b>
</div>
<b id="text"></b>
<script>
var $dom = $(document);
$dom.on("mousedown","#d",function (argument) {
    $(this).data("mouse","down");
    console.log("down");
})
$dom.on("mouseup",function(){
    $("#d").data("mouse","up");
    console.log("up");
});
$dom.on("mousemove","#d",function(event){
    if($(this).data("mouse") == "down"){
        var m_x = event.clientX;
        var d_b = $(this).find(".d_b");
        m_x = m_x < 8 ? 8 : m_x;
        m_x = m_x > 208 ? 208: m_x;
        d_b.css("left",m_x-13);
        var max = $(this).attr("max");
        $(this).attr("value", Math.floor((m_x-8)/200 * max))
        console.log($(this).attr("value"));
        $("#text").text($(this).attr("value"))
    }
});
</script>
</html>

效果图:

以上就是本文的全部内容了,希望能够对大家学习使用jQuery有所帮助。