javascript code after form submission

I tested the following javascript code on a webpage.

<form method=POST id="someform" action="http://localhost/somepage.php" >
<input type=hidden name=stuff value="value">
</form>

<script>
document.forms['someform'].submit();
window.location="http://google.com";
</script>

The window successfully redire开发者_C百科cts to google after the form is submitted. I don't understand why. Isn't the control transfered to somepage.php? why is the window.location ... still executed.

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Everything that is called is executed while the page doesn't disappear. The submit() call doesn't block the execution, it returns immediately.