jQuery function after append

Question

How to call a function after jQuery  append is completely done   Here s an example       root   append child  function          Action after append is completly done       The issue  When a complex DOM structure is appended  calculation of new size of the root element within the append function callback is wrong  Assumptions are that the DOM in still not completely loaded  only the first child of the added complex DOM is

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I m surprised at all the answers here     Try this   window setTimeout function        your stuff       0     Note the 0 timeout   It s not an arbitrary number    as I understand  though my understanding might be a bit shaky   there s two javascript event queues - one for macro events and one for micro events   The  larger  scoped queue holds tasks that update the UI  and DOM   while the micro queue performs quick-task type operations   Also realize that setting a timeout doesn t guarantee that the code performs exactly at that specified value   What this does is essentially puts the function into the higher queue  the one that handles the UI DOM   and does not run it before the specified time   This means that setting a timeout of 0 puts it into the UI DOM-portion of javascript s event queue  to be run at the next possible chance   This means that the DOM gets updated with all previous queue items  such as inserted via   append        and when your code runs  the DOM is fully available    p s  - I learned this from Secrects of the JavaScript Ninja - an excellent book  https   www manning com books secrets-of-the-javascript-ninja

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the Jquery append function returns a jQuery object so you can just tag a method on the end      root   append child  anotherJqueryMethod

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I have another variant which may be useful for someone       lt img src  http   example com someresource jpg  gt    load function             login   submit       appendTo  body

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You ve got many valid answers in here but none of them really tells you why it works as it does   In JavaScript commands are executed one at a time  synchronously in the order they come   unless you explicitly tell them to be asynchronous by using a timeout or interval   This means that your  append method will be executed and nothing else  disregarding any potential timeouts or intervals that may exist  will execute until that method have finished its job   To summarize  there s no need for a callback since  append will be run synchronously

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root   append child      do your work here   Append doesn t have callbacks  and this is code that executes synchronously - there is no risk of it NOT being done

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root   append child  anotherMethod

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For images and other sources you can use that     el  one  load   function           completed    each function         if  this complete            this  load

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I know it s not the best solution  but the best practice       root   append child    setTimeout function         Action after append   100

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Cleanest way is to do it step by step  Use an each funciton to itterate through each element  As soon as that element is appended  pass it to a subsequent function to process that element       function processAppended el             process appended element            var remove     lt a href     gt remove lt  a gt            li   each function              this  append remove              processAppended this

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I ran into a similar problem recently  The solution for me was to re-create the colletion  Let me try to demonstrate   var  element     selector    element append content       This Doesn t work  because  element still contains old structure   element fooBar            This should work  the collection is re-created with the new content    selector  fooBar      Hope this helps

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I came across the same problem and have found a simple solution  Add after calling the append function a document ready    x000D   x000D      root   append child   x000D    document  ready function      x000D         Action after append is completly done x000D      x000D   x000D   x000D

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Using MutationObserver can act like a callback for the jQuery append method   I ve explained it in another question  and this time I will only give example for modern browsers      Somewhere in your app  var observeDOM         gt        var MutationObserver   window MutationObserver    window WebKitMutationObserver       return function obj  callback           if  MutationObserver                   define a new observer             var obs   new MutationObserver function mutations  observer                   if  mutations 0  addedNodes length    mutations 0  removedNodes length                       callback mutations                                  have the observer observe foo for changes in children             obs observe  obj    childList true  subtree true                  return obs                                               Your code      setup the DOM observer  on the appended content s parent  before appending anything observeDOM  document body      gt          something was added removed    disconnect       don t listen to any more changes     append something    body   append   lt p gt foo lt  p gt

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I encountered this issue while coding HTML5 for mobile devices  Some browser device combinations caused errors because  append   method did not reflect the changes in the DOM immediatly  causing the JS to fail    By quick-and-dirty solution for this situation was   var appint   setInterval function        if       foobar   length  gt  0               now you can be sure append is ready               foobar   remove    if elem is just for checking           clearInterval appint           100     body  append   lt div gt     lt  div gt  lt div id  foobar  gt  lt  div gt

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Well I ve got exactly the same problem with size recalculation and after hours of headache I have to disagree with  append   behaving strictly synchronous  Well at least in Google Chrome  See following code   var input        lt input   gt      input append  arbitraryElement    input css   padding-left       The padding-left property is correctly retrieved in Firefox but it is empty in Chrome  Like all other CSS properties I suppose  After some experiments I had to settle for wrapping the CSS  getter  into setTimeout   with 10 ms delay which I know is UGLY as hell but the only one working in Chrome  If any of you had an idea how to solve this issue better way I d be very grateful

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I think this is well answered but this is a bit more specific to handling the  subChild with SIZE   if that s coming from the parent  but you can adapt it from where it may be       root   append          lt div   gt              id    child            children    last    each function           this  append              lt div   gt                  id     this  parent   width

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when     root   append child   then anotherMethod

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Yes you can add a callback function to any DOM insertion   myDiv append  function index myDiv  HTML myDiv                   return child     Check on JQuery documentation  http   api jquery com append  And here s a practical  similar  example  http   www w3schools com jquery tryit asp filename tryjquery html prepend func

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Although Marcus Ekwall is absolutely right about the synchronicity of append  I have also found that in odd situations sometimes the DOM isn t completely rendered by the browser when the next line of code runs   In this scenario then shadowdiver solutions is along the correct lines - with using  ready - however it is a lot tidier to chain the call to your original append        root      append html     ready function             enter code here

[jquery] jQuery function after .append

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