The global namespace already contains hundreds of names - you don't want to push your own names into that namespace.Yeah agreed - I know you may already know this, but globals are almost always a terrible way to do things. This changing them is not required (delete help.js and insert the method callTest in main.js). so try giving this a shot. In java, it is done usually done using defining “public static” fields. I'll set up a jsfiddle. A global variable has global scope: All scripts and functions on a web page can access it.

Here by adding final keyword, we can change the global variable to global constant.

Featured on Meta A JavaScript global variable is declared outside the function or declared with window object. Where developers & technologists share private knowledge with coworkersProgramming & related technical career opportunitieswindow.onload = function () { //Start Your Code } Would the the best solution - And this is Slowpoke speaking :)doesn't work for me because when trying to access from another js loaded in another html, it says the variable is not declaredHTML 1 and HTML 2 are identical (except the page title)... still, I made two files, just to have them physically separate. Take a look here: Global variables in Javascript across multiple files The main thing is, that you may have to declare the global variables before the actual file, so try inserting this before your inclusion to help.js.

So easy, right? I found that actually the problem is the browser. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called. We know that what global variables or constants are, these are fields which are accessible application wide.

Global JavaScript Variables. The Overflow Blog import global_file print global_file.var Or, from global_file import * print var

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Abstract logic into functions and pass parameters around instead. @vctlzac I've updated my answer with a link to a sample page, which works. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called.I have attempted to create a global variable by defining:In global scope both in my HTML code and in helpers.js.You need to declare the variable before you include the helpers.js file. Free 30 Day Trial
recommended - javascript global variable multiple files . Using top and declaring the global variables before the actual file works in IE and firefox, but need works in chrome =/. your coworkers to find and share information. Stack Overflow for Teams is a private, secure spot for you and Two ways of achieving this are: global_file.py: var = 1 file1.py. When coding in C, we often meet such situation that we want to define a global variable in on head file and include this head file in two different .c files so that this var can be used in both. Free 30 Day Trial Any ideas?Thanks a lot!