jquery checkbox select all inverse selection effect code_jquery

To view the effect after running, you need to refresh.

<title>jquery event 2</title> <div id="show"> <div> </div> <div>What is your favorite sport?<input id="Text1" type="text"> </div>Your name:<div id="title"> <input id="Checkbox1" name="item" type="checkbox" value="足球"> <input id="Checkbox2" name="item" type="checkbox" value="篮球"><input id="Checkbox3" name="item" type="checkbox" value="兵乓球">Football <input id="Checkbox4" name="item" type="checkbox" value="游泳">Basketball </div>Table tennis <div id="content">Swimming <input id="Button1" type="button" value="全选"> <input id="Button2" type="button" value="取消反选"> </div> <input id="Button3" type="button" value="反选"><input id="Button4" type="button" value="Click"> </div>
[Ctrl A select all Note:

If you need to introduce external Js, you need to refresh to execute ]