JavaScript实现全选和全不选操作

Damara ·

更新时间:2024-09-20

· 300 次阅读

本文实例为大家分享了JavaScript实现全选和全不选操作的具体代码，供大家参考，具体内容如下

效果示例

默认状态下：

勾选全选时：

任意取消勾选物品A/物品B/物品C时

实现代码


<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <title>全选</title>
  <script>
   function myAll() {
    var all = document.getElementById("all");
    var oneList = document.getElementsByName("one");
    for(var i = 0; i < oneList.length; i++) {
     oneList[i].checked = all.checked;
    }
   }
   function myOne() {
    var all = document.getElementById("all");
    var oneList = document.getElementsByName("one");
    for(var i = 0; i < oneList.length; i++) {
     if(oneList[i].checked == false) {
      all.checked = false;
      return;
     }
    }
    all.checked = true;
   }
  </script>
 </head>
 <body>
  <table id="myTable" border="1" cellpadding="0" cellspacing="0" width="90%" height="180px">
   <tr>
    <th>全选<input id="all" type="checkbox" onclick="myAll()" /></th>
    <th>序号</th>
    <th>名称</th>
    <th>单价</th>
    <th>数量</th>
    <th>总计</th>
   </tr>
   <tr>
    <td><input name="one" type="checkbox" onclick="myOne()" /></td>
    <td>1</td>
    <td>物品A</td>
    <td>￥55</td>
    <td>1</td>
    <td>￥55</td>
   </tr>
   <tr>
    <td><input name="one" type="checkbox" onclick="myOne()" /></td>
    <td>2</td>
    <td>物品B</td>
    <td>￥70</td>
    <td>1</td>
    <td>￥70</td>
   </tr>
   <tr>
    <td><input name="one" type="checkbox" onclick="myOne()" /></td>
    <td>3</td>
    <td>物品C</td>
    <td>￥66</td>
    <td>1</td>
    <td>￥66</td>
   </tr>
  </table>
 </body>
</html>

全选 JavaScript

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