js实现兼容PC端和移动端滑块拖动选择数字效果
本文为大家分享了js实现移动端滑块拖动选择数字的效果，可以通过鼠标拖拽滑动效果来选择数字，供大家参考，具体内容如下
<!DOCTYPEhtml>
<htmllang="zh-cn">
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=gb2312">
<metaname="viewport"content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no"/>
<title>鼠标拖动小方块</title>
<styletype="text/css">
.lineDiv{
position:relative;
height:5px;
background:red;
width:300px;
margin:50pxauto;
}
.lineDiv.minDiv{
position:absolute;
top:-5px;
left:0;
width:15px;
height:15px;
background:green;
cursor:pointer
}
.lineDiv.minDiv.vals{
position:absolute;
font-size:20px;
top:-45px;
left:-10px;
width:35px;
height:35px;
line-height:35px;
text-align:center;
background:blue;
}
.lineDiv.minDiv.vals:after{
content:"";
width:0px;
height:0px;
border-top:6pxsolidblue;
border-left:6pxsolidtransparent;
border-right:6pxsolidtransparent;
border-bottom:6pxsolidtransparent;
display:block;
margin-left:11px;
}
</style>
</head>
<body>
<center>
<h3>用鼠标拖动小方块<spanid="msg">0</span>%</h3>
</center>
<divid="lineDiv"class="lineDiv">
<divid="minDiv"class="minDiv">
<divid="vals"class="vals">0</div>
</div>
</div>
<script>
window.onload=function(){
varlineDiv=document.getElementById('lineDiv');//长线条
varminDiv=document.getElementById('minDiv');//小方块
varmsg=document.getElementById("msg");
varvals=document.getElementById("vals");
varifBool=false;//判断鼠标是否按下
//事件
varstart=function(e){
e.stopPropagation();
ifBool=true;
console.log("鼠标按下")
}
varmove=function(e){
console.log("鼠标拖动")
if(ifBool){
if(!e.touches){//兼容移动端
varx=e.clientX;
}else{//兼容PC端
varx=e.touches[0].pageX;
}
//varx=e.touches[0].pageX||e.clientX;//鼠标横坐标varx
varlineDiv_left=getPosition(lineDiv).left;//长线条的横坐标
varminDiv_left=x-lineDiv_left;//小方块相对于父元素（长线条）的left值
if(minDiv_left>=lineDiv.offsetWidth-15){
minDiv_left=lineDiv.offsetWidth-15;
}
if(minDiv_left<0){
minDiv_left=0;
}
//设置拖动后小方块的left值
minDiv.style.left=minDiv_left+"px";
msg.innerText=parseInt((minDiv_left/(lineDiv.offsetWidth-15))*100);
vals.innerText=parseInt((minDiv_left/(lineDiv.offsetWidth-15))*100);
}
}
varend=function(e){
console.log("鼠标弹起")
ifBool=false;
}
//鼠标按下方块
minDiv.addEventListener("touchstart",start);
minDiv.addEventListener("mousedown",start);
//拖动
window.addEventListener("touchmove",move);
window.addEventListener("mousemove",move);
//鼠标松开
window.addEventListener("touchend",end);
window.addEventListener("mouseup",end);
//获取元素的绝对位置
functiongetPosition(node){
varleft=node.offsetLeft;//获取元素相对于其父元素的left值varleft
vartop=node.offsetTop;
current=node.offsetParent;//取得元素的offsetParent
//一直循环直到根元素
while(current!=null){
left+=current.offsetLeft;
top+=current.offsetTop;
current=current.offsetParent;
}
return{
"left":left,
"top":top
};
}
}
</script>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。