javascript - How to change global context for new Function(...)? -


i specify global context given function whilst leaving local scope intact. after research turned out close , working:

// iframe created via document.write share objects  var iframeglobal = myiframeglobal;  (function( ns ) {   var context = this; // iframe's global, correct! }( iframeglobal ));

now said, retain scope of function in iframe context intact:

 var realglobal = window;// creator source of iframe   var iframeglobal = myiframeglobal;   (function( ns ) {     // iframe's global, correct!   var context = this;     // button custom html element in iframe, owner document       // correct. custom widget, js has been parsed      // in iframe well.   var mywidget = button;    //the content of new function    var script = "var context = window; console.dir(context); return context";     var fn = new function("{" + script + "}");    var result = fn.apply(mywidget, _args || {});//returns realglobal         }( iframeglobal ));

so might see, changing global context did work, context did fall parent document when new function has been parsed.

is on purpose? saw answers here mentions behavior doesn't makes sense me since 'this' correct , functions below should traverse it.

ps:

  • this tested against firefox-29 , firebug 1.12(must run there)
  • actually, want run 'scripts' containing $('#otherbutton').css(...) in iframe, within custom scope passed via fn.apply(mywidget,...);

to bind function context have use bind(object).

 var realglobal = window;// creator source of iframe   var iframeglobal = myiframeglobal;   (function( ns ) {     // iframe's global, correct!   var context = this;     // button custom html element in iframe, owner document       // correct. custom widget, js has been parsed      // in iframe well.   var mywidget = button;    //the content of new function    var script = "var context = window; console.dir(context); return context";     var fn = new function("{" + script + "}").bind(this);    var result = fn.apply(mywidget, _args || {});//returns realglobal         }( iframeglobal ));

Comments

Post a Comment

Popular posts from this blog

java - Spring Data JPA: Why findOne(id) executing delete query internally? -

i have 1 application using @manytomany annotation link 2 different entities 1 parent entity. not sure if have implemented properly. when execute .findone() on parent entity's repository find it, @ first fetch data along executing delete queries internally delete record mapping table (a table jpa creates after adding @manytomany annotation.). following generated sql queries , code snippet: java class @entity @table(name = "inventory") public class inventory { @id long id; // many other properties @manytomany(fetch=fetchtype.lazy) private list<stream> streams; @manytomany(fetch=fetchtype.lazy) private list<subject> subjects; } there no other annotation i've put in stream , subject entity class link inventory class. when run app, create following tables: inventory stream subject inventory_stream inventory_subject (inventory_stream , inventory_subject, 2 tables created automatically, don't k...
Read more

python - Mongodb How to add addtional information when aggregating? -

i beginner , wrote line pipeline works, wanna add other information output, screen name , or number of tweets.i tried add under $group gave me syntax error everytime here pipeline: def make_pipeline(): # complete aggregation pipeline pipeline = [ { '$match': { "user.statuses_count": {"$gt":99 }, "user.time_zone": "brasilia" } }, { "$group": { "_id": "$user.id", "followers": { "$max": "$user.followers_count" } } }, { "$sort": { "followers": -1 } }, { "$limit" : 1 } ]; i using on example : { "_id" : objectid("5304e2e3cc9e684aa98bef97"), "text" : "first week of school on :p", "in_reply_to_status_id" : null, "retweet_count" : null, ...
Read more

java - Incorrect order of records in M-M relationship in hibernate -

Image
i have 4 records in bridge table in mysql database. using @manytomany in hibernate, accurate order of employees incorrect incorrect of projects. following required material figure out doing mistake. this source. @entity @table(name="project") public class projectbean { @id @generatedvalue @column(name="project_id") private int projectid; @column(name="title") private string projecttitle; @manytomany(mappedby="projects") private collection<employeebean> employees; public projectbean() { employees = new arraylist<employeebean>(); } //getters & setters } @entity @table(name="employee") public class employeebean { @id @generatedvalue @column(name="employee_id") private int employee_id; @column(name="first_name") private string ...
Read more