var x = 10;

assert(x == 10);

// This is context code available everywhere
// The user will be able to call magicFunc in his code
function magicFunc() {
    return 3;
}

Define a variable x equal to 10.

'''js var x = '''

'''js var x = 10; '''

'''js assert(x == 10); '''

'''js // This is context code available everywhere // The user will be able to call magicFunc in his code function magicFunc() { return 3; } '''