明星照片:
通过<a></a>设置onclick,用js实现onclick功能
实例
<!DOCTYPE html> <html lang="en" > <head> <meta charset="utf-8"> <title>starts photo</title> <style type="text/css"> .top { width: 600px; height: 700px; margin: 20px auto; text-align: center; border: 2px solid lightgreen; background-color: lightblue; } .menu { width: 100%; margin: auto; overflow: hidden; } .starts { margin: 0; padding: 0; overflow: hidden; display:inline-block; } .starts li { list-style-type: none; float: left; background-color: skyblue; color: white; text-align:center; margin:0 20px; border: 1px solid black; } .starts li a { display: block; width: 100px; height: 40px; text-align: center; line-height: 40px; text-decoration: none; } .starts li:hover { background-color: coral; } .pic { width: 600px; height: 550px; border: 1px solid black; vertical-align: top; margin: auto; margin-top: 30px; } .pic img { width: 100%; height: 100%; } </style> </head> <body> <div class="top"> <h2>明星相册</h2> <ul class="starts"> <li><a href="./img/zly.jpg" title="《楚乔传》,《花千骨》,《陆贞传奇》..." onclick="show(this);return false">赵丽颖</a></li> <li><a href="./img/gyy.jpg" title="《倚天屠龙记》,《咱们经婚吧》,《爱无悔》..." onclick="show(this);return false">高圆圆</a></li> <li><a href="./img/sl.jpg" title="《那年花开月正圆》,《甑环传》,《玉观音》..." onclick="show(this);return false">孙俪</a></li> <li><a href="./img/fbb.jpg" title="《还珠格格》,《武媚娘传奇》,《我不是潘金莲》..." onclick="show(this);return false">范冰冰</a></li> </ul> <div class="pic"> <img src="./img/zwt.png" alt="" id="img"> </div> <p id="intro"></p> </div> <script type="text/javascript"> function show(pic) { var picUrl=pic.href; var picInfo=pic.title; var picName=pic.innerHTML; var img=document.getElementById('img'); var p=document.getElementById('intro'); img.src=picUrl; p.innerHTML='<span style="color:wheat">'+picName+':'+picInfo +'</span>'; } </script> </body> </html>
运行实例 »
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迷你计算器:
通过input控件实现输入,按钮设置计算,通过document get 方法得到html 控件
实例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>caculator</title> <style type="text/css"> .caculator { width: 600px; height: 200px; background-color: #efefef; border: 1px solid lightgrey; text-align: center; margin: auto; margin: 20px auto; color: #636364; border-radius: 10px; box-shadow: 3px 3px 3px #888; } table { margin: auto; } td { width: 100px; height: 30px; padding: 5px 10px; } input,select { width: 100%; height: 100%; border: none; text-align: center; } button { width:100%; height: 100%; border: none; background-color: lightgreen; color: white; } button:hover { cursor: pointer; background-color: lightskyblue; width: 106%; height: 106%; } </style> </head> <body> <div class="caculator"> <h2>迷你计算器</h2> <form class="" action="index.html" method="post"> <table> <tr> <td><input type="text" name="opt1" placeholder="操作数1"></td> <td> <select class="" name="option"> <option value="null">选择操作符</option> <option value="add">+</option> <option value="sub">-</option> <option value="mul">*</option> <option value="div">/</option> </select> </td> <td> <input type="text" name="opt2" value="" placeholder="操作数2"> </td> <td> <button type="button" name="button">计算</button> </td> </tr> <tr> <td colspan="2" align="right"><h3>结果:</h3></td> <td colspan="2" align="left"> <h3 id="placeholder"></h3> </td> </tr> </table> </form> </div> <script type="text/javascript"> var opt1=document.getElementsByName('opt1')[0]; var opt2=document.getElementsByName('opt2')[0]; var opt=document.getElementsByName('option')[0]; var btn=document.getElementsByTagName('button')[0]; var placeholder=document.getElementById('placeholder'); btn.onclick=function(){ if (opt1.value.length == 0) { alert('opt1 为空'); opt1.focus(); return false; } else if (isNaN(opt1.value)) { alert('opt1是数字'); opt1.focus(); return false; } else if (opt2.value.length == 0) { alert('opt2 为空'); opt1.focus(); return false; } else if (isNaN(opt2.value)) { alert('opt2是数字'); opt1.focus(); return false; } else { var data1=parseFloat(opt1.value); var data2=parseFloat(opt2.value); } var option=opt.value; var temp=0; var flag=""; var result=""; switch (option) { case 'null': alert('option not select'); opt.focus(); return false; case 'add': flag='+'; temp=data1+data2; break; case 'sub': flag='-'; temp=data1-data2; break; case 'mul': flag='*'; temp=data1*data2; break; case 'div': flag='/'; if (data2 == 0){ aleart("除数不能为0"); opt2.focus(); return false; } else { temp=data1/data2; } break; } var str='<span style="color:green">'; str+=data1+' '+flag+' '+data2+'='+temp; str+='</span>'; placeholder.innerHTML=str; } </script> </body> </html>
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手抄:
小结:
js代码设置a标签的onclick,再通过js function实现点击后的具体功能。
document 各种get 方法获得html中的控件,并通过赋值实现控件内容的更新