Question

I was included 2 javascript files in my app with script tag.

I was declared same variable in both script.

Now my question is, If I run the app will the variable same for two scripts or different for each script.

script 1(external file included).

var myvariable=10;
function(){
...
}

script 2 (external file)

var myvariable=20;
function(){
...
}

Is both myvariables are same for app?

Answer 1

That depends on the scope.

If both variables are global (ie: window.var) then the last variable will over-write the first variable with the same name.

Look into closures to fix this (should you be using conflicting global variables).

Good Luck !!

TO YOUR UPDATED QUESTION:
myvariable is in global scope, after script 2 executes myvariable will be 20.