jquery - Javascript access object variables from functions -

- 

function init_exam_chooser(id,mode) {     this.id=id;     this.table=$("#" + this.id);      this.htmlroworder="<tr>" + $("#" + this.id + " tbody tr:eq(0)").html() + "</tr>";     this.htmlrownew="<tr>" + $("#" + this.id + " tbody tr:eq(1)").html() + "</tr>";     $("#" + this.id + " tbody tr").remove();      //arxikopoiisi     var rownew=$(this.htmlrownew);      rownew.find("input[type='text']").eq(0).autocomplete({         source: function (req,resp)         {              $.ajax({                 url: "/medilab/prototypes/exams/searchquick",                 cache: false,                 datatype: "json",                 data:{codename:req.term},                 success: function(data) {                     resp(data);                 }             });          },         focus: function(event,ui)         {             return false;         },         minlength :2      });      rownew.find("input[type='text']").eq(1).autocomplete({         source: function (req,resp)         {              $.ajax({                 url: "/medilab/prototypes/exams/searchquick",                 cache: false,                 datatype: "json",                 data:{name:req.term},                 success: function(data) {                     resp(data);                 }             });          },         focus: function(event,ui)         {             return false;         },          minlength :2     });     rownew.find("input[type='text']").bind( "autocompleteselect", function(event, ui) {         alert(htmlroworder);         var row=$(htmlroworder);          $(table).find("tbody tr:last").before(row);         alert(ui.item.id); });     rownew.appendto($(this.table).find("tbody"));   //this.htmlrownew  }

the problem @ ,how can access htmlroworder? tried this.htmlroworder , didnt work.... ideas??

rownew.find("input[type='text']").bind( "autocompleteselect", function(event, ui) {             alert(htmlroworder);             var row=$(htmlroworder);              $(table).find("tbody tr:last").before(row);             alert(ui.item.id);     });

your issue this not think inside event handlers. jquery event handlers run in context of element on event triggered; means inside event handler, this element on event triggered.

you can solve problem either waiting next revision of javascript, have function.prototype.bind baked in, or setting reference scope object outside event handler , referring inside, patrick's answer.

function(){     var instance = this;     this.foo = "abc123";     $('someselector').click(function(ev){         this.foo; //causes error; foo element matching 'someselector'         instance.foo; //this returns "abc123"     } }

Comments

Post a Comment

Popular posts from this blog

javascript - Enclosure Memory Copies -

-
function myclass() { //lots , lots of vars , code here. this.bar = function() { //do numerous enclosed myclass vars } this.foo = function() { alert('hello'); //don't enclosed variables. } } each instance of myclass gets own copy of bar , foo, why prototyped methods use less memory. however, know more memory use of inner methods. it seems obvious me (1) below must true. agree? not distinct myclass instances have own distinct copies of bar, must have own distinct copies of myclass enclosure. (or else how bar method keep myclass variables straight on per instance basis?) now (2) question i'm after. since inner foo method doesn't use in myclass enclosure natural qustion is: javascript smart enough not keep myclass enclosure in memory use of foo? this depend entirely on implementation not language. naive implementations keep far more around others. answer true e.g. v8 (chrome's js engine) may not true spider...
Read more

php - Replacing tags in braces, even nested tags, with regex -

-
example preg_replace('/\{[a-za-z.,\(\)0-9]+\}/', 'replaced', 'lorem ipsum dolor sit {tag1({tag2()})}, consectetur adipiscing elit.'); the result: lorem ipsum dolor sit {tag1(replaced)}, consectetur adipiscing elit. question as can see "tag2" has been replaced, want replace "tag1" know how can this? (in cases might this: {tag1({tag2({tag3()})})}) , on.) btw using preg_replace_callback, easier show preg_replace here site can test code: http://www.spaweditor.com/scripts/regex/index.php you need add curly braces character set. here's pattern used: /\{[a-za-z.,\(\)\{\}0-9]+\}/ and here result: "lorem ipsum dolor sit replaced, consectetur adipiscing elit."
Read more