jquery - How to call a function of the caller's namespace with this? -

-

goal: i'm trying shorten how call function of same namespace in function using "this" instead of namespace string. apparently "this" wouldn't work function, works variable. wish know if it's due misusage, or call function namespace string way.

another beginner's question: i'm calling function of same namespace caller's. googled , said calling: this.myfunction work, doesn't. ideas? thanks.

i'm calling: singleentry.editcontent.accept(tinymce.get('editcontentta').getcontent());

from: index.fragment.singleentry.editcontent.load

i've tried as: this.accept, firebug says this.accept not function...

  index.fragment.singleentry.editcontent.load = (function(singleentry) { return function() {     // prepare edit dialog     $("#editcontentdiv").dialog({         autoopen : false,         height : 500,         width : 600,         modal : true,         buttons : {             "ok" : function() {                 singleentry.editcontent.accept(tinymce.get('editcontentta').getcontent());                 $(this).dialog("close");             },             "cancel" : function() {                 $(this).dialog("close");             }         },         open : function() {             // set value edit area             tinymce.get("editcontentta").setcontent($("#vecontent").html());         }     });

i'm not quite following ultimate goal, theory in hopes helps there:

when call function via object's property (so, via dotted notation, or [] notation), this within function call object reference. when call

singleentry.editcontent.accept(tinymce.get('editcontentta').getcontent());

...within call, this refer singleentry.editcontent.

if want this refer else, can use call:

singleentry.editcontent.accept.call(thisobj, tinymce.get('editcontentta').getcontent()); //                            ^^^^^^^^^^^^^

...where thisobj whatever object want function see this during call. more here: mythical methods

call property of (real) javascript functions, , provide make easy call function , set this should (what context is) during call. there's apply, same thing accepts arguments pass function array rather discrete arguments. e.g., these 2 calls identical:

// using `call` singleentry.editcontent.accept.call(thisobj, tinymce.get('editcontentta').getcontent());  // using `apply` singleentry.editcontent.accept.call(thisobj, [tinymce.get('editcontentta').getcontent()]); //                        note `[]` -----^

all of made possible because in javascript, this determined entirely how function called, not where it's defined — think know that, based on question, worth flagging anyway.


Comments

Post a Comment

Popular posts from this blog

Cursor error with postgresql, pgpool and php -

-
hey, struggling bit determine exact cause of error has been popping in our release environment. there not seem dealing particular error on google. this error message getting: sqlstate[34000]: invalid cursor name: 7 error: portal "" not exist the error pops when using pdo prepared statements. this setup our release environment: pgpool 3.0.1 (the postgresql backend in streaming replication mode!) php 5.3.5 postgresql 9.0 edit: architecture 64bit. the same error not manifest in our test environment (edit: forgot mention, standard test environment uses postgresql 9.0 without pgpool). thus, led suspect pgpool @ least partly suspect. does know probable causes error are? edit: ok, here example of kind of code causes error. $sql = 'select * '; $sql .= 'from "mytable" "mystuff" '; $sql .= 'where "mytable"."status" = 1 '; $sql .= 'and "mytable"."mytableid" = :table...
Read more

delphi - ESC/P programming! -

-
why need use because printers using tprinter prints weird hieroglyph @ beginning of printable area. my problem if send commands, nothing happens. esc e (#27 #69) - sending escape sequence didn't work expected. removed first letter , rest of string made bold. eg. hello -> ello . after changed esc e esc (#27 #69 #27), worked fine. example managed figure out, but... trying select character table "esc t n" (#27 #116 n), make "õäöü" work. command doesn't work. nothing happens! , command supported esc/p, esc/p 2 , 9-pin esc/p, should work fine. manual can found here . if has ever needed use esc/p commands maybe 1 can shed light how work them! thanks in advance! edit: in previous post asked more or less same question though answers how did send commands printer. (i'll change question there according answers!) i accepted ken's answer, because claimed way transferred commands wasn't best , got work escape command. problem after t...
Read more

c++ - error: use of deleted function -

-
i've been working on c++ code friend has written , following error have never seen before when compiling gcc4.6: error: use of deleted function ‘gamefsm_<std::array<c, 2ul> >::hdealt::hdealt()’ implicitly deleted because default definition ill-formed: uninitialized non-static const member ‘const h_t floppokergamefsm_<std::array<c, 2ul> >::hdealt::h’ edit: comes part of code using boost msm: boost webpage edit2: there no = delete() used anywhere in sourcecode. generally speaking, error mean? should looking when type of error occurs? i don't think other answers mentioning =deleted; syntax correct. error message says default constructor has been deleted implicitly . says why: class contains non-static, const variable, not initialized default ctor. class x { const int x; }; since x::x const , must initialized -- default ctor wouldn't initialize (because it's pod type). therefore, default ctor, need define 1 (and must ...
Read more