js进度条
第一步
//====================
.wrap,.circle,.percent{
position: absolute;
width: 200px;
height: 200px;
border-radius: 50%;
}
.wrap{
top:50px;
left:50px;
}
.circle{
box-sizing: border-box;
border:20px solid #ccc;
clip:rect(0,200px,200px,100px);
}
.clip-auto{
clip:rect(auto, auto, auto, auto);
}
.percent{
box-sizing: border-box;
top:-20px;
left:-20px;
}
.left{
transition:transform ease;
border:20px solid blue;
clip: rect(0,100px,200px,0);
}
.right{
border:20px solid blue;
clip: rect(0,200px,200px,100px);
}
.wth0{
width:0;
}
.num{
position: absolute;
box-sizing: border-box;
width: 160px;
height: 160px;
line-height: 160px;
text-align: center;
font-size: 40px;
left: 20px;
top: 20px;
border-radius: 50%;
z-index: 1;
}
第二步
//===============
<div class="wrap">
<div class="circle">
<div class="percent left"></div>
<div class="percent right wth0"></div>
</div>
<div class="num"><span>0</span>%</div>
</div>
第三步
//===============
<script>
var percent=0;
var loading=setInterval(function(){
if(percent>100){
percent=0;
$('.circle').removeClass('clip-auto');
$('.right').addClass('wth0');
}else if(percent>50){
$('.circle').addClass('clip-auto');
$('.right').removeClass('wth0');
}
$('.left').css("-webkit-transform","rotate("+(18/5)*percent+"deg)");
$('.num>span').text(percent);
percent++;
},200);
</script>