jquery one-click method to control checkbox selection, inverse selection, and deselection-JS Tutorial-php.cn

jquery one-click method to control checkbox selection, inverse selection, and deselection

一个新手

Release： 2017-10-17 09:44:00

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The jquery attr() method may cause problems when obtaining the checked tag, so the prop() method is used.

Hml's checkbox does not add a name, only p nesting is used.

If there is a better method, please give it!!

//全选$(&#39;#allChecked&#39;).change(function(){
     $(&#39;#box&#39;).children(&#39;:checkbox&#39;).prop(&#39;checked&#39;,$(this).is(&#39;:checked&#39;)?true:false);
});

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//反选$(&#39;#invertChecked&#39;).change(function(){  
        if($(this).is(&#39;:checked&#39;)){
     $(&#39;#box&#39;).children(&#39;:checkbox&#39;).each(function(){
       $(this).prop(&#39;checked&#39;,$(this).is(&#39;:checked&#39;)?false:true);
     });
  }
});

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//一键控制全选、反选、全不选
$(&#39;#orChecked&#39;).change(function(){
  if($(this).is(&#39;:checked&#39;)){
     var box = $(&#39;#box&#39;).children(&#39;:checkbox&#39;);
     if(box.length==box.filter(&#39;:not(:checked)&#39;).length){    // 复选框长度和没选中的个数一样 -> 全选 , .not(&#39;:checked&#39;).length 也可以。
     $(&#39;#box&#39;).children(&#39;:checkbox&#39;).prop(&#39;checked&#39;,true);
  }else{     // 如果有选中个数，-> 反选 
     $(&#39;#box&#39;).children(&#39;:checkbox&#39;).each(function(){     
        $(this).prop(&#39;checked&#39;,$(this).is(&#39;:checked&#39;)?false:true);
     });
  }else{
      $(&#39;#box&#39;).children(&#39;:checkbox&#39;).prop(&#39;checked&#39;,false);    // 如控制键取消选中，剩余的checkbox也取消选中
  }
    
});

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<div align="center">
          
      <div id="box">
          <input type="checkbox" value="1">西瓜
          <input type="checkbox" value="2">芒果
          <input type="checkbox" value="3">橙
          <input type="checkbox" value="4">山竹
          <input type="checkbox" value="5">草莓
          <input type="checkbox" value="6">火龙果
      </div>    
              
      <br>
              
      <input type="checkbox" id="allChecked">全选
      <input type="checkbox" id="invertChecked">反选
      <input type="checkbox" id="orChecked">全选/反选/全不选
              
  </div>

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If there is a better method, please give it!!

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