1.显示和隐藏标签javascript
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <script type="text/javascript"> //显示 function show(){ var p = document.getElementById('content'); //获取p元素 p.style.display = 'block'; //设置style style内的是css代码 } //隐藏 function hide(){ var p = document.getElementById('content'); p.style.display = 'none'; } </script> </head> <body> <!--onclick内的是js代码--> <button onclick="show();">显示</button> <button onclick="hide();">隐藏</button> <p id="content">xxxxxxxxxxxxxxxxxxxxxxxxxxxx</p> </body> </html>
2.切换图片css
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <img src="images/icon_01.png"> <div> <button id="previous">上一张</button> <button id="next">下一张</button> </div> <script type="text/javascript"> var minIndex = 1; var maxIndex = 9; // 图片索引 var index = minIndex; //上一张按钮 var previous = document.getElementById('previous'); previous.onclick = function () { //操做索引 if (index == minIndex) { index = maxIndex; } else { index--; } //根据索引显示对应的图片 var img = document.getElementsByTagName('img')[0]; img.src = 'images/icon_0' + index + '.png'; }; //下一张按钮 var next = document.getElementById('next'); previous.onclick = function () { //操做索引 if (index == maxIndex){ index = minIndex; }else { index++; } //根据索引显示对应的图片 var img = document.getElementsByTagName('img')[0]; img.src = 'images/icon_0' + index + '.png'; }; </script> </body> </html>