java - How do I send data from Struts action to javascript? -

-

i'm trying create webb application using struts 2 , javascript , i'm having trouble passing data action javascript.
list i'm trying send/access: 

list<markerclass> markers;

markerclass defined acoprding belove:

final class markerclass   {       public integer objectid;       public string street;       public string streetnumber;       public string zip;       public string city;       public integer statusid;       public float lattitude;       public float longitude;   }

the action includes getter markers:

public list<markerclass> getmarkers() {     return markers; }

in jsp-file have tried doing this:

<%@ page language="java" contenttype="text/html; charset=iso-8859-1"     pageencoding="iso-8859-1"%> <%@ taglib prefix="s" uri="/struts-tags" %> <!doctype html> <html> <head>  <script type="text/javascript">  function initialize()  {     var titel = "";     for(var i, "${markers}")     {         titel = titel+ "${markers[i].street}";     } }

the browser substitutes "${markers}" "[se.fubar.test.markerclass@37a4, se.fubar.test.markerclass@9ad97c]"
i'm guessing there better , smarter way since i'm bit new struts , trying code while under influence of migrane answer elludes me.

you cannot use struts variable in javascript function , expect work. remember ${...} stuff gets processed before html page sent browser. time javascript rendered @ browser, left textual representations. need (check syntax, haven't used stuff while):

function initialize() {     var title = "";     <c:foreach var="marker" list="${markers}">          title = title + "${marker.street}";     </c:foreach> }

something along lines anyway... javascript seen browser like

function initialize() {     var title = "";     title = title + "street1";     title = title + "street2";     title = title + "street3";     title = title + "street4"; }

i hope makes sense , related asking. way, there better ways of accomplishing functionality building dynamic js etc. there built in struts 2 components can use?


Comments

Post a Comment

Popular posts from this blog

php - What is the difference between $_SERVER['PATH_INFO'] and $_SERVER['ORIG_PATH_INFO']? -

-
what’s difference between $_server['path_info'] , $_server['orig_path_info'] ? how use them? when run print_r($_server) , path_info , orig_path_info not present in array. why not? how can enable them? i have read php manual on them, still don’t understand them. the path_info variable present if invoke php script this: http://www.example.com/phpinfo.php/hello_there it's /hello_there part after .php script. if don't invoke url that, there won't $_server["path_info"] environment variable. the porig_ prefix uncommon. path_info standard cgi-environment variable, , should never prefixed. did read that? (there issues around php3/php4 if invoked php interpreter via cgi-bin/ - hardly has such setups today.) for reference: http://www.ietf.org/rfc/rfc3875
Read more

fortran - Function return type mismatch -

-
i'm attempting recode old c++ program in fortran make use of lapack (i'm aware c++ have lapack++, i'm having lot of trouble installing it, gave up). i didn't have problems compilation, when had variables declared real . when started coding section of program required lapack, found parameters passed dsyev need double precision . tried change double precision (including changing hard coded numbers double precision counterparts, i.e. 0.0 -> 0.0d0) when try compile, following error of functions , subroutines i've written: error: return type mismatch of function <function> @ (1) (real(4)/real(8)) i'm not sure coming from, in program has been changed double precision. for example, i've declared following: double precision :: alpha(3),d(3),zeta1,zeta2 double precision :: a1(3),a2(3),d1(3),d2(3) double precision :: pi pi = 3.14159265359d0 alpha = (/0.109818d0, 0.405771d0, 2.22766d0/) d = (/0.444635d0, 0.535328d0, 0.154329d0 /) 10 i=1,3 ...
Read more

queue - mq_receive: message too long -

-
i implementing communication between 2 processes using queue. problem when call function mq_receive, error: message long. i have done following: struct mq_attr attr; long size = attr.mq_msgsize; .... // initializing queue "/gateway" int rc = mq_receive(gateway, buffer, size, &prio); if print size value, size=1, while when print same size program (got same mechanism), not long integer ( -1217186280 )... how can solve error?....so while size = 1, believe it's right "message long" why 1? p.s. have tried put : int rc = mq_receive(gateway, buffer, sizeof(buffer), &prio); but no result. it seems need read docs more carefully. when call mq_receive should pass size of destination buffer. this size must greater mq_msgsize attribute of queue . in addition, seems have error in queue attributes initialisation makes proper mq_receive call impossible. here standard message queue session: fill mq_attr struct ( doc ): struct mq_a...
Read more