<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。