How to select and invert all checkboxes in js

This article is about check boxes, which have two forms: 1. Select all and inverse selection are implemented by 2 buttons; 2. Select all and inverse selection are implemented by one button.

      
  
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I encountered a problem in practice - check fails to select all. The solution is to use prop method instead of attr.

$("input[name='book']").attr("checked", "checked"); $("input[name='book']").prop("checked", "checked");

This may be related to the jQuery version.

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