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。