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//Variables declared Globally (outside any function) have Global Scope.
//Global variables can be accessed from anywhere in a JavaScript program.
var thisIsAGlobalVar = 5;
function check_var() {
thisIsAGlobalVar++; //use it anywhere
console.log(thisIsAGlobalVar);
}
console.log(thisIsAGlobalVar); //use it anywhere
check_var();
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window.myGlobalVariable = "I am totally a global Var"; //define a global variable
var myOtherGlobalVariable="I too am global as long as I'm outside a function";
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<script>
function foo() {
window.yourGlobalVariable = ;
}
</script>
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// Global variable declaration
globalVar = "I'm a global variable";
function myFunction() {
console.log(globalVar); // Accessing the global variable inside a function
}
myFunction();
console.log(globalVar); // Accessing the global variable outside the function