javascript - Nested asynchronous calls do not seem to execute as expected -

-

while trying out jquery, have question newbie mistake, cannot seem find solution. code:

$.get("index.html", function() {     var = 0;     (; < 3; i++)     {         var ldiv = document.createelement('div');         ldiv.id = 'body-' + i;         document.getelementbyid('body').appendchild(ldiv);         $.get('index.html', function(data) {             ldiv.innerhtml = "<p>hello world " + + "</p>";         });     } });

the output seems be

<div id='body-0'></div> <div id='body-1'></div> <div id='body-2'>     <p>hello world 3</p> </div>

i expected ldiv.innerhtml= code executed each i, apparently executed last i? overlooking?

this happens because loop completes (i 2) before of callbacks fired.

@thecodeparadox's solution works, serializes http requests. (makes them fire one-at-a-time.) allows requests execute in parallel, , quicker:

for (var = 0; < 3; i++) {     var ldiv = document.createelement('div');     ldiv.id = 'body-' + i;     document.getelementbyid('body').appendchild(ldiv);     $.get('index.html', function(i,ldiv) { // current iteration's `i` , `ldiv` captured...         return function(data) {             ldiv.innerhtml = "<p>hello world " + + "</p>";         }     }(i,ldiv)); // ...by passing them argument self-executing function }

Comments

Post a Comment

Popular posts from this blog

django - How can I change user group without delete record -

-
on website user have 1 group. , user can change group. it's made user.groups.clear() and user.groups.add(new_group) but it's not efficient, because there 2 sql query: delete, insert. how can change group update query? user , group related each other using manytomanyfield . means intersection table exists relating both entities, , if don't specify model map (using through attribute) django creates 1 you. looking @ sources django.contrib.auth.models see that's case. fortunatly, can access intermediary model using through attribute of manager (in case, user.groups.through ). can use regular model. example: >>> alice = user.objects.create_user('alice', 'alice@example.com', 'alicepw') >>> employee = group.objects.create(name='employee') >>> manager = group.objects.create(name='manager') >>> alice.groups.add(employee) >>> alice.groups.all() [<group: employee...
Read more

java - Need to add SOAP security token -

-
i need set custom soap header attribute on jax-ws generated webservice client. case webservice calls must go through proxy server requiring specific token (recieved web request header) present in soap request header. e.g.: 1 carserviceservice service = null; 2 service = new carserviceservice(new url(url), new qname(qname); 3 carserviceendpoint port = service.getcarserviceport(); it seems in line 3 wsdl retrieved , call fails due missing security token. 1 point direction on how done? a detailed example has been mentioned here: creating , deploying jax-ws web service on tomcat 6 this article shows how create , use security token .
Read more

java - EclipseLink JPA Object is not a known entity type -

-
i have strange problem eclipselink , object want persist. have 1 object (keypointlistimpl) stores object keypointimpl in list. persisting keypointimpl objects works great if try persist keypointlistimpl object java.lang.illegalargumentexception says object keypointimpl isn't known entity type. here keypointimpl code: @entity @table(name="keypoints") public class keypointimpl implements keypoint { @id @generatedvalue(strategy = generationtype.identity) private int id; @enumerated(enumtype.string) private detectortype keypointtype; private float x; private float y; private float size; private float angle; private float response; private int octave; private int classid; ... } here keypointlistimpl code: @entity @table(name="keypointlists") public class keypointlistimpl implements keypointlist { @id @generatedvalue(strategy = generationtype.identity) private int id; @onetoone(cascade={ca...
Read more