如何在函数内访问变量

Question

How do I access a variable that is defined within a function like this:

var functionVar = function(){
  this.var = 1;
}

console.log(functionVar().var); //MH - obviously this doesn't work, but I'm looking for the command that will log that variable

Answer 1

You can access like this,

var functionVar = function(){
  this.var = 1;
}

 var o = new functionVar();
 alert(o.var)​

Answer 2

a new will do the trick.

var functionVar = function(){
  this.var = 1;
}

console.log(new functionVar().var);

Though not sure what you are trying to achieve by using this code.