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Form validation error message alert does not appear (JavaScript)

I have a form that, with JS, has an error message that is meant to appear when one or more of the fields in the form are left empty. However, when I click the submit button, nothing appears. HTML:

<body>
    <script type=text/javascript src="script.js"></script>
    <h1>Organisation Score Calculator</h1>
    <!-- 
    <h4>Input the name of the charity.</h4>
    <input type="text" id="nameOfOrganisation">
    <h4>Which state/territory does this organisation service?</h4>
    <input type="text" id="state">
    <h4>What is the ACNC listed size for this organisation?</h4>
    <input type="text" id="size">
    <h4>What percentage of the organisation's total income is from government grants?</h4>
    <input type="text" id="governmentGrants">
    <h4>How much net profit does the organisation make annuallly?</h4>
    <input type="text" id="netProfit">
    <h4>What is the value of the organisation's investments?</h4>
    <input type="text" id="investments">
    <br>
    <br>
    <button onclick="main()">Get score!</button>
    -->
    <form id="regForm">
        <div class="textinput">
            <label for="nameOfOrganisation">Input the name of the organisation.</label><br><br>
            <input id="nameOfOrganisation" type="text" name="nameOfOrganisation"/>
        </div>
        <br>
        <br>
        <br>
        <div class="textinput">
            <label for="state">Which state/territory does this organisation service?</label><br><br>
            <input id="state" type="text" name="state"/>
        </div>
        <br>
        <br>
        <br>
        <div class="textinput">
            <label for="size">What is the ACNC listed size for this organisation?</label><br><br>
            <input id="size" type="text" name="size"/>
        </div>
        <br>
        <br>
        <br>
        <div class="textinput">
            <label for="governmentGrants">What percentage of the organisation's total income is from government grants?</label><br><br>
            <input id="governmentGrants" type="text" name="governmentGrants"/>
        </div>
        <br>
        <br>
        <br>
        <div class="textinput">
            <label for="netProfit">How much net profit does the organisation make annuallly?</label><br><br>
            <input id="netProfit" type="text" name="netProfit"/>
        </div>
        <br>
        <br>
        <br>
        <div class="textinput">
            <label for="investments">What is the value of the organisation's investments?</label><br><br>
            <input id="investments" type="text" name="investments"/>
        </div>
        <br>
        <br>
        <br>
        <input type="submit" value="Get score!">
    </form>
    <p id="namePlaceholder"></p>
    <p id="statePlaceholder"></p>
    <p id="sizePlaceholder"></p>
    <p id="governmentGrantsPlaceholder"></p>
    <p id=netProfitPlaceholder></p>
    <p id="investmentsPlaceholder"></p>
    <h4 id="total"></h4>
</body>

JS:

function validate () {
    var name = docuemnt.getElementById("nameOfOrganisation").value;
    var state = docuemnt.getElementById("state").value;
    var size = document.getElementById("size").value;
    var governmentGrants = document.getElementById("governmentGrants").value;
    var netProfit = document.getElementById("netProfit").value;
    var investments = document.getElementById("investments").value;
    var errMsg = "";                            
    var result = true;

    if (name == "") {
        errMsg += "Name cannot be empty.\n";
        }
    if (state == "") {
        errMsg += "State cannot be empty.";
    }
    if (size == "") {
        errMsg += "Size cannot be empty.\n";
        }
    if (governmentGrants == "") {
        errMsg += "Government grants cannot be empty.\n";
        }
    if (netProfit == "") {
        errMsg += "Net profit cannot be empty.\n";
        }
    if (investments == "") {
        errMsg += "Investments cannot be empty.\n";
        }

    if (errMsg != "") {
        alert (errMsg);
        result = false;
    } 
    
    return result;
}

function init () {
    var regForm = document.getElementById("regForm");
    regForm.onsubmit = validate();
}

window.onload = init();

I am very new to JS and would appreciate it if anyone could tell me where I've gone wrong here. I have tried changing the function calls in init and below it to include brackets but that did not seem to help at all.

Via Active questions tagged javascript - Stack Overflow https://ift.tt/FTd7cAS
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