Execute A Function In An External Js File?

I'm trying to execute a function in an external js file. I have the file linked

Code:

script type="text/javascript" scr="./JScript/JSFile.js" language="javascript"></script>

In my form the action points to the JSfile

Code:

action="JSFile.js"

My submission button has a link to the JS function

Code:

<a hef="javascript: function()"><input type="submit"></a>

When I click the submit button, it shows the JSFile instead of executing the function.