基於JavaScript實現表格隔行換色

阿新 • • 發佈：2020-05-10

表格隔行換色

需求分析

我們商品分類的資訊太多，如果每一行都顯示同一個顏色的話會讓人看的眼花，為了提高使用者體驗，減少使用者看錯的情況，需要對錶格進行隔行換色

技術分析

table物件集合 cells[]：返回包含表格中所有單元格的一個數組。 rows[]：返回包含表格中所有行的一個數組。 tBodies[]：返回包含表格中所有tbody 的一個數組。

步驟分析

確定事件: 文件載入完成 onload 2. 事件要觸發函式: init() 3. 函式:操作頁面的元素要操作表格中每一行動態的修改行的背景顏色
程式碼實現

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script >
    function init(){
      //得到表格
      var tab = document.getElementById("tab");
      //得到表格中每一行
      var rows = tab.rows;
      //便利所有的行,然後根據奇數 偶數
      for(var i=1; i < rows.length; i++){
        var row = rows[i]; //得到其中的某一行
        if(i%2==0){
          row.bgColor = "yellow";
        }else{
          row.bgColor = "red"
        }
      }
    }
  </script>
</head>
<body onload="init()">
<table border="1px" width="600px" id="tab">
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>分類ID</td>
    <td>分類名稱</td>
    <td>分類商品</td>
    <td>分類描述</td>
    <td>操作</td>
  </tr>
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>1</td>
    <td>手機數碼</td>
    <td>華為,小米,尼康</td>
    <td>黑馬數碼產品質量最好</td>
    <td>
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刪除</a>
    </td>
  </tr>
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>2</td>
    <td>成人用品</td>
    <td>充氣的</td>
    <td>這裡面的充氣電動矽膠的</td>
    <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刪除</a></td>
  </tr>
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>3</td>
    <td>電腦辦公</td>
    <td>聯想,小米</td>
    <td>筆記本特賣</td>
    <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刪除</a></td>
  </tr>
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>4</td>
    <td>饞嘴零食</td>
    <td>辣條,麻花,黃瓜</td>
    <td>年貨</td>
    <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刪除</a></td>
  </tr>
  <tr>
    <td>
      <input type="checkbox"/>
    </td>
    <td>5</td>
    <td>床上用品</td>
    <td>床單,被套,四件套</td>
    <td>都是套子</td>
    <td><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >修改</a>|<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >刪除</a></td>
  </tr>
</table>
</body>
</html>

基於JavaScript實現表格隔行換色