javascript - 页面通过表单验证后未重定向到 strip 结帐

Question

我正在使用 HTML 5 required 属性进行表单验证。现在我想要的是，如果表单已经通过了 HTML 5 验证，它应该将用户带到 strip 结帐(我故意在下面的代码中为 SO 问题 xxx 输出信息)。

现在如果表单没有通过验证，提交就不会处理，这很好。但是在我完成表格并提交表格后，它并没有将我带到条纹结帐页面，它只是刷新了页面。我究竟做错了什么？

<form id="tcform">

<p><b>Quantity:</b> 1</p>
<b class="price">Price:</b> <s>£xx</s> <span style="color: red;">£xx</span>
<button class="btn btn-default buynow" id="checkout-button-sku_xxx" role="link">
     Buy Now
    </button>
    <p>
    <i style="font-size:small">Limited time offer</i>
    </p>

  <p class="tcparagraph">
  <input id="field_terms" type="checkbox" required name="terms"> I accept the <u><a href="Terms" id="tclink">Terms and Conditions</a></u></p>

  <div id="error-message"></div>
  </form>

<script>
    (function() {

        var stripe = Stripe('pk_test_xxx');

        var checkoutButton = document.getElementById('checkout-button-sku_xxx');

        checkoutButton.addEventListener('click', function() {
            // When the customer clicks on the button, redirect
            // them to Checkout.

            const isFormValid = checkoutButton.form.checkValidity();

            if(isFormValid==true) {

            stripe.redirectToCheckout({
                    items: [{
                        sku: 'sku_xxx',
                        quantity: 1
                    }],

                    // Do not rely on the redirect to the successUrl for fulfilling
                    // purchases, customers may not always reach the success_url after
                    // a successful payment.
                    // Instead use one of the strategies described in
                    // https://stripe.com/docs/payments/checkout/fulfillment
                    successUrl: window.location.protocol + '//metis-online.com/courses/course-BRFAITC009-order-confirmation',
                    cancelUrl: window.location.protocol + '//metis-online.com/order-cancelled',
                })
                .then(function(result) {
                    if (result.error) {
                        // If `redirectToCheckout` fails due to a browser or network
                        // error, display the localized error message to your customer.
                        var displayError = document.getElementById('error-message');
                        displayError.textContent = result.error.message;
                    }
                });
            }

        });
    })();
</script>

Answer 1

您想阻止 默认行为 提交表格。这样做:

checkoutButton.addEventListener('click', function(event) {

...

if(isFormValid==true) {
    event.preventDefault();

引用

Prevent Default on Form Submit

Event.preventDefault()