Check if all checkboxes are selected

Question

How do I check if all checkboxes with class  abc  are selected    I need to check it every time one of them is checked or unchecked  Do I do it on click or change

User · Answer

Part 1 of your question   var allChecked   true     input abc   each function index  element     if  element checked       allChecked   false      return false             EDIT   The answer  http   stackoverflow com questions 5541387 check-if-all-checkboxes-are-selected 5541480 5541480  above is probably better

User · Answer

I think the easiest way is checking for this condition       abc checked   length        abc   length   You could do it every time a new checkbox is checked       abc   change function        if      abc checked   length        abc   length             do something

User · Answer

input abc   not   checked   length  gt  0

User · Answer

This is how I achieved it in my code   if     citiescheckbox checked   length        citiescheckbox   length           citycontainer   hide     else          citycontainer   show

User · Answer

A class independent solution   var checkBox    input type  checkbox     if    checkBox   checked   length      checkBox  length         Do Something

User · Answer

You can use change       input type  checkbox   abc   change function        var a      input type  checkbox   abc        if a length    a filter   checked   length           alert  all checked                All this will do is verify that the total number of  abc checkboxes matches the total number of  abc checked   Code example on jsfiddle

User · Answer

The search criteria is one of these   input type checkbox  MyClass not  checked  input type checkbox  MyClass checked   You probably want to connect to the change event

User · Answer

Alternatively  you could have also used every        Cache DOM Lookup var abc       abc        On Click abc on  click  function            Check if all items in list are selected     if abc toArray   every areSelected              do something            function areSelected element  index  array           return array index  checked

User · Answer

abc checked  true    length    0

[jquery] Check if all checkboxes are selected

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