<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
div{
200px;
height: 200px;
border:1px solid #adadad;
transition:all 0.1s;
background:red;
background-size:cover;
margin:50px auto;
}
</style>
<body>
<button id='btn'>
按钮
</button>
<div id ='div'>
1
</div>
</body>
</html>
<script>
var flag = true
var time
var angel=0;
setCss3(div,{transform:"rotate(0deg)","transform-origin":"50% 50%"})
btn.onclick=function(){
//setCss3(div,{transform:"rotate(10deg)","transform-origin":"50% 50%"})
if(flag){
time = setInterval(function(){
angel+=8;
setCss3(div,{transform:"rotate("+angel+"deg)","transform-origin":"50% 50%"})
},30)
flag= false
}else{
clearInterval(time)
flag= true
}
}
function setCss3(obj,objAttr){
//循环属性对象
for(var i in objAttr){
var newi=i;
//判断是否存在transform-origin这样格式的属性
if(newi.indexOf("-")>0){
var num=newi.indexOf("-");
newi=newi.replace(newi.substr(num,2),newi.substr(num+1,1).toUpperCase());
}
//考虑到css3的兼容性问题,所以这些属性都必须加前缀才行
obj.style[newi]=objAttr[i];
newi=newi.replace(newi.charAt(0),newi.charAt(0).toUpperCase());
obj.style[newi]=objAttr[i];
obj.style["webkit"+newi]=objAttr[i];
obj.style["moz"+newi]=objAttr[i];
obj.style["o"+newi]=objAttr[i];
obj.style["ms"+newi]=objAttr[i];
}
}
</script>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<style>
div{
200px;
height: 200px;
border:1px solid #adadad;
transition:all 0.1s;
background:red;
background-size:cover;
margin:50px auto;
}
</style>
<body>
<button id='btn'>
按钮
</button>
<div id ='div'>
1
</div>
</body>
</html>
<script>
var flag = true
var time
var angel=0;
setCss3(div,{transform:"rotate(0deg)","transform-origin":"50% 50%"})
btn.onclick=function(){
//setCss3(div,{transform:"rotate(10deg)","transform-origin":"50% 50%"})
if(flag){
time = setInterval(function(){
angel+=8;
setCss3(div,{transform:"rotate("+angel+"deg)","transform-origin":"50% 50%"})
},30)
flag= false
}else{
clearInterval(time)
flag= true
}
}
function setCss3(obj,objAttr){
//循环属性对象
for(var i in objAttr){
var newi=i;
//判断是否存在transform-origin这样格式的属性
if(newi.indexOf("-")>0){
var num=newi.indexOf("-");
newi=newi.replace(newi.substr(num,2),newi.substr(num+1,1).toUpperCase());
}
//考虑到css3的兼容性问题,所以这些属性都必须加前缀才行
obj.style[newi]=objAttr[i];
newi=newi.replace(newi.charAt(0),newi.charAt(0).toUpperCase());
obj.style[newi]=objAttr[i];
obj.style["webkit"+newi]=objAttr[i];
obj.style["moz"+newi]=objAttr[i];
obj.style["o"+newi]=objAttr[i];
obj.style["ms"+newi]=objAttr[i];
}
}
</script>