Can I use jQuery to check whether at least one checkbox is checked

Question

I have the following HTML form which can have many checkboxes  When the submit button is clicked  I want the user to get a javascript alert to check at least one checkbox if none are checked  Is there an easy way to do this using jQuery    lt form name    frmTest  id  frmTest  gt     lt input type  checkbox  value  true  checked  true  name  chk 120   gt     lt input type  checkbox  value  true  checked  true  name  chk 128   gt     lt input type  checkbox  name  chk 130   gt     lt input type  checkbox  name  chk 143   gt     lt input type  submit  name  btnsubmit  value  Submit  gt   lt  form gt

User · Answer

frmTest   submit function        if      frmTest input type  checkbox     is   checked           alert  Please check at least one           return false              is   checked   will return true if at least one or more of the checkboxes are checked

User · Answer

if jQuery   frmTest input type checkbox  checked   length

User · Answer

show   click function         var count checked       name  chk     checked   length     count the checked rows         if count checked    0                         alert  Please select any record to delete                 return false                    if count checked    1                alert  Record Selected   count checked              else               alert  Record Selected   count checked

User · Answer

x000D   x000D      fm submit   submit function e   x000D      e preventDefault    x000D      var ck box      input type  checkbox   checked   length  x000D       x000D         return in firefox or chrome console  x000D         the number of checkbox checked x000D      console log ck box    x000D   x000D      if ck box  gt  0   x000D        alert ck box   x000D         x000D      x000D   lt script src  https   ajax googleapis com ajax libs jquery 2 1 1 jquery min js  gt  lt  script gt  x000D   lt form name    frmTest    id  fm submit  gt  x000D     lt input type  checkbox  value  true  checked  true   gt  x000D     lt input type  checkbox  value  true  checked  true   gt  x000D     lt input type  checkbox   gt  x000D     lt input type  checkbox   gt  x000D     lt input type  submit  id  fm submit  name  fm submit  value  Submit  gt  x000D   lt  form gt  x000D   lt div class  container  gt  lt  div gt  x000D   x000D   x000D

User · Answer

frmTest input checked   length  gt  0

User · Answer

frmTest   submit function        var checked       frmText input checked   length  gt  0      if   checked           alert  Please check at least one checkbox            return false

[javascript] Can I use jQuery to check whether at least one checkbox is checked?

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