I am brand new to JavaScript and I would like practice my skills using a simple windows based IDE. While learning I do not want to use any CSS or HTML. I would like if possible to have colour single stepping, highlighting and syntax checking.

So for example you could type in your function(s), call it and receive the result

function squareNumber(x) {
  return x*x;
}

squareNumber(5)

25

I would like something better than the Internet Explorer console.

javascript ide
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