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How to achieve the select-all-cancel effect in JavaScript

亚连Original: 2018-06-20 17:12:511362browse

This article mainly introduces JavaScript to realize the select-all-cancel effect in detail. It has certain reference value. Interested friends can refer to it.

The example in this article shares with you the js implementation of select-all. The specific code for canceling the effect is for your reference. The specific content is as follows

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>Title</title>
 <style>
 .hide {
  display: none;
 }

 .c1 {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  right: 0;
  background-color: black;
  opacity: 0.6;
  z-index: 9;
 }

 .c2 {
  width: 500px;
  height: 400px;
  background-color: white;
  position: fixed;
  left: 50%;
  top: 50%;
  margin-left: -250px;
  margin-top: -300px;
  z-index: 10;
 }
 </style>
</head>
<body style="margin: 0;">
<p>
 <input type="button" value="添加" onclick="ShowModel();"/>
 <input type="button" value="全选" onclick="ChooseAll();"/>
 <input type="button" value="取消" onclick="CancelAll();"/>
 <input type="button" value="反选" onclick="ReverseAll();"/>
 <table>
 <thead>
 <tr>
  <th>选择</th>
  <th>主机名</th>
  <th>端口</th>
 </tr>
 </thead>
 <tbody id="tb">
 <tr>
  <td><input type="checkbox"/></td>
  <td>1.1.1.1</td>
  <td>90</td>
 </tr>
 <tr>
  <td><input type="checkbox"/></td>
  <td>1.1.1.2</td>
  <td>91</td>
 </tr>
 <tr>
  <td><input type="checkbox"/></td>
  <td>1.1.1.3</td>
  <td>92</td>
 </tr>
 </tbody>
 </table>
</p>
<!--遮罩层开始-->
<p id="i1" class="c1 hide"></p>
<!--遮罩层结束-->

<!--弹出框开始-->
<p id="i2" class="c2 hide">
 <p><input type="text"/></p>
 <p><input type="text"/></p>
 <p>
 <input type="button" value="取消" onclick="HideModel();"/>
 <input type="button" value="确定"/>
 </p>
</p>
<!--弹出框结束-->

<script>
 function ShowModel() {
 document.getElementById("i1").classList.remove("hide");
 document.getElementById("i2").classList.remove("hide");
 }
 function HideModel() {
 document.getElementById("i1").classList.add("hide");
 document.getElementById("i2").classList.add("hide");
 }
 function ChooseAll() {
 var tbody = document.getElementById("tb");
 var tb_list = tbody.children;
 for (var i = 0; i < tb_list.length; i++) {
  var current_tr = tb_list[i];
  var checkbox = current_tr.children[0].children[0];
  checkbox.checked = true;
 }
 }
 function CancelAll() {
 var tbody = document.getElementById("tb");
 var tb_list = tbody.children;
 for (var i = 0; i < tb_list.length; i++) {
  var current_tr = tb_list[i];
  var checkbox = current_tr.children[0].children[0];
  checkbox.checked = false;
 }
 }
 function ReverseAll() {
 var tbody = document.getElementById("tb");
 var tb_list = tbody.children;
 for (var i = 0; i < tb_list.length; i++) {
  var current_tr = tb_list[i];
  var checkbox = current_tr.children[0].children[0];
  if(checkbox.checked){
  checkbox.checked = false;
  }else{
  checkbox.checked = true;
  }
 }
 }
</script>
</body>
</html>

The effect is as follows:

Click Select All and invert the selection to cancel the corresponding effect:

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

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