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Editorial Team
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Asked: 2026-06-16T19:05:48+00:00

This works … html file … <!DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01 Transitional//EN http://www.w3.org/TR/html4/loose.dtd>

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This works …

html file …

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="src/myJS.js"></script>
</head>
<body onload="myJS();">
</body>
</html>

Contents of external javascript file (called myJS.js for convenience) …

myJS = function ()
{
    document.write("Hello world");
};

But, this does not work …

html file …

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="src/myJS.js"></script>
</head>
<body onload="myJS.myFunction();">
</body>
</html>

external javascript file …

myJS = function ()
{   
    myFunction = function()
    {
        document.write("Hello world");
    };  
};

Why not? Thanks in advance for any help.

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1 Answer

  1. Editorial Team

    A function declared inside another function does not become a property of that function.
    If you want myJS to be an object with myFunction as a method you can do this

    myJS = {    
    myFunction: function()
    {
        document.write("Hello world");
    }   
};
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