https://stackoverflow.com › questions › 5786851
Define a global variable in a JavaScript function - Stack OverflowAs the others have said, you can use var at global scope (outside of all functions and modules) to declare a global variable: <script> var yourGlobalVariable; function foo() { // ... } </script> (Note that that's only true at global scope.
https://www.w3schools.com › js › js_scope.asp
JavaScript Scope - W3SchoolsAutomatically Global. If you assign a value to a variable that has not been declared, it will automatically become a GLOBAL variable. This code example will declare a global variable carName, even if the value is assigned inside a function.
https://www.delftstack.com › fr › howto › javascript › javascript-global-variable
Déclarer des variables globales en JavaScript - Delft StackCe didacticiel explique comment déclarer des variables globales dans JavaScript. Les variables contiennent les données et les informations, qui peuvent être modifiées à tout moment. En JavaScript, les variables peuvent être déclarées à l’aide de mots-clés tels que const , let et var .
https://stackoverflow.com › questions › 3352020
How to declare a global variable in JavaScript - Stack OverflowWhile it is possible to define a global variable by just omitting var (assuming there is no local variable of the same name), doing so generates an implicit global, which is a bad thing to do and would generate an error in strict mode.
https://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Statements › var
var - JavaScript | MDN - MDN Web DocsSi on affecte une valeur à une variable qui n'a pas été déclarée (le mot-clé var n'a pas été utilisé), cela devient une variable globale (une propriété de l'objet global) lorsque l'affectation est exécutée. Les différences entre les variables déclarées et les variables non-déclarées sont :
https://masteringjs.io › tutorials › fundamentals › global-variable
Global Variables in JavaScript - Mastering JSAny JavaScript variable defined outside any function is a global variable, but that comes with caveats for Node.js and Webpack. Here's what you need to know.
https://www.freecodecamp.org › news › global-variables-in-javascript-explained
Global Variables in JavaScript Explained - freeCodeCamp.orgGlobal Variables in JavaScript Explained. Global variables are declared outside of a function for accessibility throughout the program, while local variables are stored within a function using var for use only within that function’s scope. If you declare a variable without using var, even if it’s inside a function, it will still be seen as global:
https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Statements › var...
var - JavaScript | MDN - MDN Web DocsThe var statement declares function-scoped or globally-scoped variables, optionally initializing each to a value.
https://byby.dev › js-global-variables
How to use global variables in JavaScript - byby.devIn JavaScript, you can use global variables across multiple files by attaching them to the global object (usually window in a web browser environment) or by using a module system to import and export variables between files. Using the global object
https://www.w3schools.com › js › tryjs_local_global.htm
JavaScript Global Variables - W3SchoolsJavaScript Global Variables. If you assign a value to a variable that has not been declared, it will automatically become a GLOBAL variable: I can display Volvo
