Form not submitting, can someone please tell me what I'm doing wrong?

The form somehow doesn't find the JavaScript function 'validateForm()', and I'm not sure why. Can someone please tell me what I'm doing wrong?

<!DOCTYPE html>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <script src="//"></script>
$(function() {

function validateForm() {
    alert("It got to validateForm()");

        <form onsubmit="return validateForm();">
            Home Phone:<br/>
            <input type="text" id="txtHomePhone"/><p>
            Work Phone:<br/>
            <input type="text" id="txtWorkPhone"/><p>
            <input type="submit" /><p>

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Duy PhamFreelance IT ConsultantCommented:
It is because you define validateForm() function inside $(function() {...}, therefore its scope is local, while the form couldn't find that validateForm() function in global scope.

You just need to move validateForm() function out of $(function() {...}
function validateForm() {
    alert("It got to validateForm()");

$(function() {
    // do your initialization after page load here

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