Correction status:qualified
Teacher's comments:
jQuery中的基本操作(二)
时间:2018年9月18号 天气:晴
1编程:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>实战演练:篮球明星照片在线管理</title> <link rel="icon" type="image/x-icon" href="images/logo.jpg"> </head> <style> .wrap{ width: 400px; height: auto; background-color: #efefef; color: #363636; border: 5px double gray; border-radius: 5%; } .wrap .header{ padding: 15px; } .add{ background-color: skyblue; color: white; border: none; width: 100px; height: 30px; } .add:hover{ cursor: pointer; font-size: 1.1rem; background-color: coral; } .main{ overflow: hidden; } .main ul{ list-style-type: none; margin: 0; padding: 0; } .main ul li { display: block; width: 170px; height: 200px; float: left; margin-left: 20px; margin-bottom: 10px; text-align: center; } .main ul li button{ background-color: lavender; color: orangered; margin: 3px; border-radius: 5%; } .main ul li button:hover{ font-size: 1.01rem; background-color: lightcoral; color: white; cursor:pointer; } </style> <body> <div class="wrap"> <div class="header"> <h2 align="center">我喜爱的篮球明星</h2> <p> <label for="img_url">输入图片地址</label> <input type="file" id="img_url" name="img_url" placeholder="图片地址"> </p> <p> 图片类型: <input type="radio" id="rect" name="border" value="0" ><label for="rect">直角</label> <input type="radio" id="radius" name="border" value="15%"><label for="radius">圆角</label> <input type="radio" id="circle" name="border" value="50%"><label for="rect">圆形</label> </p> <p> 是否添加阴影: <select name="shadow" id=""> <option value="0">不添加</option> <option value="1">添加</option> <option value="1" selected>默认</option> </select> </p> <p><button class="add">添加图片</button></p> </div> <div class="main"> <ul> <!--<li> <button>前</button> <button>后</button> <button>删</button> </li>--> </ul> </div> </div> <script src="lib/jQuery.js"></script> <script> <!--三步走 --> $(function () { $('button.add').on('click',function () { // 1、获取图片的相关信息 //判断是否选取了图片 let img_url = $('#img_url').val(); if (img_url.length === 0){ alert('请选择一张图片'); $('#img_url').focus(); return false; } //获取图片的样式类型 let img_type = $(':radio:checked').val(); //添加阴影与否 let shadow = 'none'; if ($(':selected').val()==='1'){ shadow = '3px 3px 3px #444'; } // 2、创建图片并添加到页面中 //改成file文件上传 console.log(img_url); console.log(img_url.split('\\')[2]) console.log('http://www.js.io/0918/images'+img_url.split('\\')[2]); img_url = 'http://www.js.io/0918/images/'+img_url.split('\\')[2]; let img = $('<img>') .prop('src',img_url) .width(160) .height(160) .css({ 'border-radius':img_type, 'box-shadow':shadow }); let before = $('<button></button>').text('前移'); let after = $('<button></button>').text('后移'); let remove = $('<button></button>').text('删除'); //船舰容器包裹所有内容 let contaier = $('<li>'); //将图片和按钮添加到li中 contaier.append(img,before,after,remove); //将li添加到ul中 contaier.appendTo('ul'); //给三个按钮添加功能 //前移 before.click(function () { let current = $(this).parent(); let prv = current.prev(); prv.before(current); }); //后移 after.click(function () { let current =$(this).parent(); let next = current.next(); next.after(current); }); //删除 remove.click(function () { if (confirm('确定删除吗?')){ $(this).parent().remove(); } return false; }); }); }); </script> </body> </html>
点击 "运行实例" 按钮查看在线实例
本机运行图: