title: Jslint variable already defined even in a separate scope?
body: <p>With the following code JsLint warns that y is already defined in the 2nd block. I do this fairly often and don't think it is a syntax error since the variable is defined in a different block.</p>
  
  <p>Should I really be using different variable names even though it is in a different block? Is the scope defined by the code block of the if statement or only scoped for a function block?</p>
  
  <pre><code>function x() {
    if (condition1) {
      var y = 0;
      // use y
    }
    if (condition2) {
      var y = 20;
      // use y
    }
  }
  </code></pre>