js+css实现扇形导航效果

时间：2021-05-26

本文实例为大家分享了js+css实现扇形导航效果的具体代码，供大家参考，具体内容如下\

<!DOCTYPE html><html> <head> <meta charset="utf-8"> <title>扇形导航</title> <style type="text/css"> *{ margin: 0; padding: 0; } html,body{ height: 100%; overflow: hidden; } #wrap{ height: 50px; width: 50px; position: fixed; right: 15px; bottom: 15px; } #wrap>.home{ height: 49px; width: 49px; background: url(img/home.png) ; background-position: center; border-radius: 50%; transition: 1s; position: absolute; z-index: 1; } #wrap>.nav{ height: 100%; position: relative; } #wrap>.nav>img{ position: absolute ; right: 0px; bottom: 0px; margin: 4px; border-radius: 50% ; } .home:hover{ transform: rotate(360); } </style> </head> <body> <div id="wrap"> <div class="home"></div> <div class="nav"> <img src="img/clos.png" > <img src="img/full.png" > <img src="img/open.png" > <img src="img/prev.png" > <img src="img/refresh.png" > </div> </div> </body> <script type="text/javascript"> window.onload =function(){ var homeEle = document.querySelector("#wrap>.home"); var flag= true; var imgs =document.querySelectorAll("#wrap>.nav>img"); function fn(){ this.style.transition=0.3+"s"; this.style.transform ="rotate(-360deg) scale(1)"; this.style.opacity =1; this.removeEventListener("transitionend",fn); } for (var i=0;i<imgs.length;i++) { imgs[i].onclick =function(){ this.style.transform ="rotate(-360deg) scale(2)"; this.style.transition ="0.3s"; this.style.opacity =0.1; this.addEventListener("transitionend",fn); } } homeEle.onclick =function(){ console.log(imgs.length); if(flag){ this.style.transform="rotate(-720deg) "; imgs.forEach((index,No)=>{ imgs[No].style.right = getLocation(140,No*22.5/180*Math.PI).left+"px"; imgs[No].style.bottom = getLocation(140,No*22.5/180*Math.PI).top+"px"; imgs[No].style.transform ="rotate(-360deg) scale(1)"; imgs[No].style.transition ="1s "+No*0.1+"s"; }); }else{ this.style.transform="rotate(0)"; imgs.forEach((index,No)=>{ imgs[No].style.right = 0+"px"; imgs[No].style.bottom = 0+"px"; imgs[No].style.transform ="rotate(0deg) scale(1)"; imgs[No].style.transition="1s "+(0.4-No*0.1)+"s"; }); } flag =!flag; } var getLocation =function(r,deg){ var x =Math.round(r*Math.sin(deg)); var y =Math.round(r*Math.cos(deg)); return{left:x,top:y}; } } </script></html>

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