原生JS實現滑動導航
阿新 • • 發佈：2018-11-19
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <style> * { padding: 0; margin: 0; } ul { list-style-type: none; height: 42px; position: absolute; } img { vertical-align: middle; } li, a { cursor: pointer; } a { text-decoration: none; color: #000000; display: block; } li { width: 83px; height: 42px; /*background-color: pink;*/ float: left; text-align: center; line-height: 42px; } .box { position: relative; width: 530px; height: 42px; border: 1px solid deepskyblue; margin: 100px auto; -webkit-border-radius: 10px; -moz-border-radius: 10px; border-radius: 10px; } .box img#cloud { width: 83px; height: 42px; position: absolute; left: 0; top: 0; } .box img#xinhao { position: absolute; right: 0; top: 50%; transform: translateY(-50%); } </style> </head> <body> <div class="box" id="box"> <img id="cloud" src="images/cloud.gif" alt="" /> <ul id="ull"> <li><a href="#">長沙校區</a></li> <li><a href="#">長沙校區</a></li> <li><a href="#">長沙校區</a></li> <li><a href="#">長沙校區</a></li> <li><a href="#">長沙校區</a></li> <li><a href="#">長沙校區</a></li> </ul> <img id="xinhao" src="images/rss.png" alt="" /> </div> <script src="js/common.js"></script> <script src="js/changespead.js"></script> <script> //獲取每一個li var list=my$('ull').children; console.log(list); //獲取到筋斗雲圖片 var im=my$('cloud'); //獲取圖片的寬度 var imgWidth=im.offsetWidth; console.log(imgWidth); for(var i=0;i<list.length;i++){ //設定index值用來儲存移動的距離 list[i].setAttribute('index',i); //遍歷所有li，每個li繫結三個時間指向同一個函式f1 list[i].onmouseover=f1; list[i].onmouseout=f1; list[i].onclick=f1; //實現函式f1 function f1(e){ switch(e.type) { case 'mouseover': //獲取當前li的index值 index=this.getAttribute('index'); //呼叫變速移動函式 movecs(im,imgWidth*index); break; case 'click': index=this.getAttribute('index'); //點選之後固定 im.style.left=imgWidth*index+'px'; //點選了其中一個li之後的操作，移開滑鼠之後不會彈回去 this.onmouseout=false; for(var k=0;k<list.length;k++){ list[k].setAttribute('jndex',k); list[k].onmouseover=function(){ jndex=this.getAttribute('jndex'); movecs(im,imgWidth*jndex); }; list[k].onmouseout=function(){ movecs(im,imgWidth*index); }; } break; case 'mouseout': index=0; movecs(im,imgWidth*index); break; } } } /*list[i].onmouseover=function(){ index=this.getAttribute('index'); console.log(index); movecs(im,imgWidth*index); }; list[i].onmouseout=function(){ index=0; // im.style.left='0px'; movecs(im,imgWidth*index); }; list[i].onclick=function(){ index=this.getAttribute('index'); im.style.left=imgWidth*index+'px'; alert(index); };*/ </script> </body> </html>
最終效果如下：雲彩跟隨滑鼠移動，點選固定
