javascript - Define global variable inside a function -

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Is it possible to define global variables within a function like a dragon?

For example -

In Python 

  def testFunc (): global testVar testVar + = 1   < P> Is there a way to define testvar global in javascript function?   
 
 
 Just ignore the keyword  var .  
  function testFunc () {testVar = 1; // `testVar` is now a global winch)  Note:  In the Python version of your code, you can not  define  a global Variables You are referring to the variable  testVar  defined in the global area. Quoted from  
  
 
 Assigns a value for an undeclared variable, declares a global variable (it is now the property of the global object)  < / blockquote>

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