How do I check how many options there are in a dropdown menu

Question

How do I check  using jQuery  how many options are there in a drop down menu   Thanks

User · Answer

dropdown id   find  option   length

User · Answer

Use the length property or the size method to find out how many items are in a jQuery collection  Use the descendant selector to select all  lt option gt  s within a  lt select gt    HTML    lt select id  myDropDown  gt   lt option gt 1 lt  option gt   lt option gt 2 lt  option gt         lt  select gt    JQuery   var numberOfOptions      select myDropDown option   length   And a quick note  often you will need to do something in jquery for a very specific thing  but you first need to see if the very specific thing exists   The length property is the perfect tool  example      if     myDropDown option   length  gt  0          do your stuff            This  translates  to  If item with ID myDropDown has any descendent  option  s  go do what you need to do

User · Answer

select option   length    or     select option   size

User · Answer

var length       mySelectList   children  option   length    or  var length       mySelectList  gt  option   length    This assumes your  lt select gt  list has an ID of mySelectList    http   api jquery com length  http   api jquery com children  http   api jquery com child-selector

User · Answer

idofdropdown option   length    That should do it

User · Answer

With pure javascript you can just call the length on the id of the select box   It will be more faster   Typically with everything native javascript is performing better and better with modern browsers   This can be achieved in javascript by        var dropdownFilterSite   document querySelector    dropDownId        Similar to jQuery  var length   dropdownFilterSite length    Good website for some learning   www youmightnotneedjquery com  A good video to watch by Todd Motto   https   www youtube com watch v pLISnANteJY

User · Answer

alert     select id option   length

User · Answer

Click here to see a previous post about this  Basically just target the ID of the select and do this   var numberOfOptions       selectId option   length

User · Answer

mydropdown option   length   Or if you already got a reference to it     myDropdown  find  option   length

User · Answer

Get the number of options in a particular select element      elementid option   length

[jquery] How do I check how many options there are in a dropdown menu?

Examples related to jquery

Examples related to drop-down-menu