Examples

Last update: July 21, 2026

Topics:
Forms

CREATED FOR:

Admin

These examples demonstrate common Forms 2.0 web form workflows.

Hide Form After Successful Submission

This example keeps the visitor on the current page after a successful submission. It does not open the follow-up page or reload the current page.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function(form) {
    // Add an onSuccess handler
    form.onSuccess(function(values, followUpUrl) {
        // Get the form's jQuery element and hide it
        form.getFormElem().hide();
        // Return false to prevent the submission handler from taking the lead to the follow up url
        return false;
    });
});

Take Visitor to User-Defined URL

This example sends the visitor to a URL defined in JavaScript after a successful submission. The JavaScript URL replaces the configured thank-you page.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function(form) {
    //Add an onSuccess handler
    form.onSuccess(function(values, followUpUrl) {
        // Take the lead to a different page on successful submit, ignoring the form's configured followUpUrl
        location.href = "https://google.com/?q=marketo+forms+v2+examples";
        // Return false to prevent the submission handler continuing with its own processing
        return false;
    });
});

Set Form Field Values

This example sets form fields.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function(form) {
    // Set the value of the Phone and Country fields
    form.vals({ "Phone":"555-555-1234", "Country":"USA"});
});

Read Form Field Values on Form Submit

This example reads the form field values when the form is submitted.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function(form) {
    // Add an onSubmit handler
    form.onSubmit(function(){
        // Get the form field values
        var vals = form.vals();
        // You may wish to call other function calls here, for example to fire google analytics tracking or the like
        // callSomeFunction(vals);
        // We'll just alert them to show the principle
        alert("Submitted values: " + JSON.stringify(vals));
    });
});

Form Submit on Non-Form Click Event

This example submits a form when the visitor selects an element outside the form.

// Load the form normally
MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057);

// Find the button element that you want to attach the event to
var btn = document.getElementById("MyAlternativeSubmitButtonId");
btn.onclick = function() {
    // When the button is clicked, get the form object and submit it
    MktoForms2.whenReady(function (form) {
        form.submit();
    });
};

Prevent a User From Submitting a Form

In this example, the visitor must select the click counter button at least three times before the form’s submit button works.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function (form) {
    // Check if the form is submittable
    if (form.submittable()) {
        // Set it to be non submittable
        form.submittable(false);
    }
});

var clickCount = 0;
// Wire up the click counter button
var clickCounterBtn = document.getElementById("ClickCounter");
clickCounterBtn.onclick = function() {
    clickCount++;
    // Update the buttons's text
    clickCounterBtn.innerHTML = "Click Counter Button ("+clickCount+")";

    if (clickCount >= 3) {
        // Get the form and set it to be submittable
        MktoForms2.whenReady(function (form) {
            form.submittable(true);
        });
    }
};

Set Values on Hidden Fields on the Form

This example sets values on hidden fields.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function (form) {
    // Set values for the hidden fields, "userIsAwesome" and "enrollDate"
    // Note that these fields were configured in the form editor as hidden fields already
    form.vals({"userIsAwesome":"true", "enrollDate":"2014-01-01"});
});

This example displays the form in a lightbox-style dialog when the URL contains the lightboxForm=true parameter.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function (form) {
    if (location.href.indexOf("lightboxForm=true") != -1) {
        MktoForms2.lightbox(form).show();
    }
});

Show Custom Error Message

This example applies custom business logic during submission and displays a custom error message when the values do not meet the required condition.

MktoForms2.loadForm("//app-ab00.marketo.com", "785-UHP-775", 1057, function (form) {
    //listen for the validate event
    form.onValidate(function() {
        // Get the values
        var vals = form.vals();
        //Check your condition
        if (vals.Country == "USA" && vals.vehicleSize != "Massive") {
            // Prevent form submission
            form.submittable(false);
            // Show error message, pointed at VehicleSize element
            var vehicleSizeElem = form.getFormElem().find("#vehicleSize");
            form.showErrorMessage("All Americans must have a massive vehicle", vehicleSizeElem);
        }
        else {
            // Enable submission for those who met the criteria
            form.submittable(true);
        }
  });
});

recommendation-more-help

marketo-developer-help