JavaScript 圖片切換
阿新 • • 發佈：2018-12-27
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>無標題文件</title> <style> p { margin:0; } body { text-align:center; } #content { width:400px; height:400px; border:10px solid #ccc; margin:50px auto 0; position:relative; } #content a { width:40px; height:40px; background:#fff; filter:alpha(opacity:80); opacity:0.8; position:absolute; top:160px; font-size:18px; color:#000; text-align:center; line-height:40px; text-decoration:none; } #content a:hover { filter:alpha(opacity:30); opacity:0.3; } #prev { left:10px; } #next { right:10px; } #p1 { width:400px; height:30px; line-height:30px; text-align:center; background:#000; color:#fff; font-size:14px; filter:alpha(opacity:80); opacity:0.8; position:absolute; bottom:0; left:0; } strong { width:400px; height:30px; line-height:30px; text-align:center; background:#000; color:#fff; font-size:14px; filter:alpha(opacity:80); opacity:0.8; position:absolute; top:0; left:0; } #img1 { width:400px; height:400px; } span { position:absolute; width:400px; height:30px; line-height:30px; text-align:center; top:-50px; left:0; font-family:'微軟雅黑'; } </style> <script> window.onload = function (){ var oPrev = document.getElementById('prev'); var oNext = document.getElementById('next'); var oP = document.getElementById('p1'); var oSpan = document.getElementById('span1'); var oImg = document.getElementById('img1'); var aBtn = document.getElementsByTagName('input'); var arrUrl = [ 'img/1.jpg', 'img/2.jpg', 'img/3.jpg', 'img/4.jpg' ]; var arrText = [ '文字一', '文字二', '文字三', '識文斷字' ]; var num=0; function fnTab(){ //初始化 1/4 字串連線 oSpan.innerHTML=num+1+'/'+arrText.length; //初始化 插入照片 oImg.src=arrUrl[num] //初始化 文字 oP.innerHTML=arrText[num]; } fnTab(); oNext.onclick=function(){ num++; if(num==arrText.length){ num =0; }; fnTab() }; oPrev.onclick=function(){ num--; if(num==-1){ num =arrText.length-1; }; fnTab() }; }; </script> </head> <body> <input type="button" value="迴圈切換" /> <input type="button" value="順序切換" /> <div id="content"> <a id="prev" href="javascript:;"><</a> <a id="next" href="javascript:;">></a> <p id="p1">圖片文字載入中……</p> <span id="span1">圖片數量計算中……</span> <img id="img1" /> </div> </body> </html>