jQuery see if any or no checkboxes are selected

Question

I know how to see if an individual checkbox is selected or not   But Im having trouble with the following - given a form id I need to see if any of the checkboxes are selected  i e 1 or more   and I need to see if none are selected   Basically I need two separate functions that answer these two questions   Help would be appreciated   Thanks   Actually  I would just need a function to tell me if none are selected   Knowing this would answer the other question

User · Answer

You can do a simple return of the  length here   function areAnyChecked formID      return         formID   input type checkbox  checked   length      This look for checkboxes in the given form  sees if any are  checked and returns true if they are  since the length would be 0 otherwise    To make it a bit clearer  here s the non boolean converted version   function howManyAreChecked formID      return       formID   input type checkbox  checked   length      This would return a count of how many were checked

User · Answer

Without using  length  you can do it like this   if     input type checkbox    is   checked              any one is checked   else     none is checked

User · Answer

JQuery  is will test all specified elements and return true if at least one of them matches selector   if      checkbox name  choices     form  is   checked             one or more checked   else          nothing checked

User · Answer

Rahul s answer is best fit for your question  Anyway  if you have a group of checkboxes to be checked and not all the checkbox in your form  you can go for it   Put a classname for all the checkboxes you want to check  say for example  a classname test check and now you can check if any of the checkbox is checked belonging to the group by       formID  test check checked   length  gt  0   If it returns true  assume that one or more checkboxes are checked having the classname test check and none checked if returns false    Hope it helps someone  Thanks   -

User · Answer

This is  the best way to solve this problem    if    quot  checkbox quot   is  quot  checked quot           Do something here

User · Answer

You can do this     if      form id  checkbox checked   length  gt  0          one or more checkboxes are checked       else        no checkboxes are checked       Where     checkbox filter selector selects all checkbox   checked will select checked checkboxes length will give the number of checked ones there

User · Answer

This is what I used for checking if any checkboxes in a list of checkboxes had changed      input type  checkbox     change function              var itemName      select option selected   text                  Do something

User · Answer

You can use something like this  if      formID input checkbox checked   length  gt  0           any one is checked   else         none is checked

[javascript] jQuery see if any or no checkboxes are selected

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