Heim > Artikel > Web-Frontend > Eine kurze Einführung in den Markdown-Editor
<html> <head> <style type="text/css"> body,html{ padding: 0; margin: 0; font-size: 14px; color: #000000;} table{ border-collapse: collapse; width: 100%; table-layout: fixed;} thead{ background: #3d444c; color: #ffffff;} td,th{ border: 1px solid #e1e1e1; padding: 0; height: 30px; line-height: 30px; text-align: center;} </style> </head> <body> <table id="jsTrolley"> <thead><tr><th>名称</th><th>价格</th><th>操作</th></tr></thead> <tbody> <tr><td>产品1</td><td>10.00</td><td><a href="javascript:void(0);">删除</a></td></tr> <tr><td>产品2</td><td>30.20</td><td><a href="javascript:void(0);">删除</a></td></tr> <tr><td>产品3</td><td>20.50</td><td><a href="javascript:void(0);">删除</a></td></tr> </tbody> <tfoot><tr><th>总计</th><td colspan="2">60.70(3件商品)</td></tr></tfoot></table></body></html><script type="text/javascript">window.onload = function(){//页面加载完之后执行 add([{name:"213",price:1},{name:"456",price:3}]);//调用 bind();//调用}function add(items) { var tbody = document.getElementById('jsTrolley').getElementsByTagName('tbody')[0]; (items || []).forEach(function (item) { var tr = document.createElement('tr'); tr.innerHTML = '<td>' + item.name + '</td><td>' + item.price.toFixed(2) + '</td><td><a href="javascript:void(0);">删除</a></td>'; tbody.appendChild(tr); }); update(); }function bind() { debugger; var table = document.getElementById('jsTrolley'); table.addEventListener('click', function (event) { var el = event.target; if (el.tagName.toLowerCase() === 'a') { tr = el.parentNode.parentNode; tr.parentNode.removeChild(tr); update(); } }); }function update() { var table = document.getElementById('jsTrolley'); var tbody = table.getElementsByTagName('tbody')[0]; var tfoot = table.getElementsByTagName('tfoot')[0]; var tr = [].slice.call(tbody.getElementsByTagName('tr'), 0); var total = 0; tr.forEach(function (tr) { total += +(tr.getElementsByTagName('td')[1].innerHTML.trim()); }); tfoot.getElementsByTagName('td')[0].innerHTML = total.toFixed(2) + '(' + tr.length + '件商品)'; }</script>
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