How to get all of the IDs with jQuery

Question

I am trying to gather a list  array  of ids in a sector   lt div id  mydiv  gt    lt span id  span1  gt    lt span id  span2  gt   lt  div gt       mydiv   find  span       gives me a jQuery object  but not a real array   I can do   var array   jQuery makeArray     mydiv   find  span       and then use a for loop to put the id attributes into another array  or I can do      mydiv   find  span   each function         but i cannot really get the id and assign it to an array that is not with in the scope  or can I    Anyhow  I just wanna see if there is a shorthand in jQuery to do that

User · Answer

You can get the ids of specifict tags and send it to a annother element. For exemple:

$("input").map(function() {
    $( "textarea" ).append(this.id+"\n");
});

It will get all input ids and send it to textarea.

User · Answer

The  get   method will return an array from a jQuery object  In addition you can use  map to project to something before calling get    var idarray       myDiv                 find  span     Find the spans               map function     return this id       Project Ids               get      ToArray

User · Answer

for i 1 i lt 13 i               alert     tdt  i  val

User · Answer

HTML   lt div id  mydiv  gt    lt span id  span1  gt    lt span id  span2  gt   lt  div gt    JQuery  var IDs           mydiv   find  span   each function    IDs push   this  attr  id

User · Answer

but i cannot really get the id and assign it to an array that is not with in the scope  or can I    Yes  you can   var IDs           mydiv   find  span   each function    IDs push this id         This is the beauty of closures    Note that while you were on the right track  sighohwell and cletus both point out more reliable and concise ways of accomplishing this  taking advantage of attribute filters  to limit matched elements to those with IDs  and jQuery s built-in map   function   var IDs       mydiv span id               find spans with ID attribute    map function     return this id        convert to set of IDs    get       convert to instance of Array  optional

User · Answer

The best way I can think of to answer this is to make a custom jquery plugin to do this   jQuery fn getIdArray   function       var ret             id    this  each function         ret push this id           return ret       Then do something like   var array       mydiv   getIdArray

User · Answer

It s a late answer but now there is an easy way  Current version of jquery lets you search if attribute exists  For example      id      will give you all the elements if they have id  If you want all spans with id starting with span you can use     span id   span

User · Answer

My suggestion   var arr     map     mydiv  id     function n  i      return n id        you could also do this as   var arr     map     mydiv span    function n  i      or  var arr     map     mydiv span id     function n  i      or even just   var arr       mydiv  id    map function       return this id        Lots of ways basically

User · Answer

Not a real array  but objs are all associative arrays in javascript   I chose not to use a real array with    and    push because technically  you can have multiple ID s on a page even though that is incorrect to do so  So just another option in case some html has duplicated ID s    function             var oArr                   id    each function                var id     this  attr  id               if   oArr id   oArr id    true                     for  var prop in oArr             alert prop

[javascript] How to get all of the IDs with jQuery?

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