global-variables

问题 Any way of using the data_response outside the $.post() ? This is part of the code I use: $.post('do.php', { OP: "news_search", category: cat_id }, function(data_response){ var response = data_response; //I need to access this variable outside of $.post() } }, "json"); console.log(response); //response is not defined, is what I get for now UPDATE Is there no way of getting that response available globally? 回答1: No; $.post executes asynchronously, so when you call console.log , the AJAX

问题 I am new to actionscript 3.0 and I'm experiencing difficulty trying to pass a variable that is created and set in frame 1 to a dynamic text box that is added to the stage in frame 4. on frame 1 the variable is set from information entered by the user: var input_dia = ""; input_dia = pdia_input.text; and should be displayed in a dynamic text box on frame 4: dia_alert.text=input_dia; I'm receiving the following error: 1120: Access of undefined property input_dia. 回答1: You have to imagine - the

问题 I am new to actionscript 3.0 and I'm experiencing difficulty trying to pass a variable that is created and set in frame 1 to a dynamic text box that is added to the stage in frame 4. on frame 1 the variable is set from information entered by the user: var input_dia = ""; input_dia = pdia_input.text; and should be displayed in a dynamic text box on frame 4: dia_alert.text=input_dia; I'm receiving the following error: 1120: Access of undefined property input_dia. 回答1: You have to imagine - the

问题 This question already has answers here : In what scope are module variables stored in node.js? (4 answers) Closed 5 months ago . In any web browser executing the following script will result in 'wee' being sent to the console. In Node it sends {} . var d = 'wee'; console.log(this.d); I realize that in Node this refers to the exports object in this case. I do know about the global variable, and that isn't what I'm trying to access. Besides, the script above does not set d on the global object

问题 I have 2 files main.py and irc.py. main.py import irc var = 1 func() irc.py def func(): print var When I try to run main.py I'm getting this error NameError: global name 'var' is not defined How to make it work? @Edit I thought there is a better solution but unfortunately the only one i found is to make another file and import it to both files main.py import irc import another another.var = 1 irc.func() irc.py import another def func(): print another.var another.py var = 0 回答1: Don't. Pass it

问题 What is the best way to define a constant that is global, i.e., available in all PHP files? UPDATE: What are the differences between constants and class constants? Can they be used interchangeably? 回答1: Define your constant in your top .php file, that will be included in all the other scripts. It may be your front controller, your config file, or a file created for this single purpose. !defined('MY_CONST') && define('MY_CONST', 'hello'); 回答2: do the following: define("CONSTANT_NAME","value");

问题 JavaScript: The Good Parts defines these kinds of declarations as bad: foo = value; The book says "JavaScript’s policy of making forgotten variables global creates bugs that can be very difficult to find." What are some of the problems of these implied global variables other than the usual dangers of typical global variables? 回答1: As discussed in the comments on this answer, setting certain values can have unexpected consequences. In Javascript, this is more likely because setting a global

问题 In my endless quest in over-complicating simple stuff, I am researching the most 'Pythonic' way to provide global configuration variables inside the typical ' config.py ' found in Python egg packages. The traditional way (aah, good ol' #define !) is as follows: MYSQL_PORT = 3306 MYSQL_DATABASE = 'mydb' MYSQL_DATABASE_TABLES = ['tb_users', 'tb_groups'] Therefore global variables are imported in one of the following ways: from config import * dbname = MYSQL_DATABASE for table in MYSQL_DATABASE

问题 My company is redoing our website over the next few months, going from a ColdFusion website to one written in Java. I am just learning Java and I am curious as to how I can set application scope variables in a Java web application. ColdFusion has the application.cfm file that holds variables that are accessible by all ColdFusion pages/components within the app. Java obviously does not have a direct equivalent to that file, so I was wondering how to recreate something similar in Java. I want

问题 What I want to do is just to define a variable in a header file and use it on two different cpp files without redefinition that variable each time I include that header Here is how I tried : Variables.h #ifndef VARIABLES_H // header guards #define VARIABLES_H static bool bShouldRegister; #endif (I also tried extern but nothing changed) And in a cpp file I give it a value ::bShouldRegister = true or bShouldRegister = true; In my another cpp file I check it's value by creating a thread and