[Skip to main content](#vessel-content) # Intercept "next page" on checkout for custom plugin. ## - **[raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile")** - [![raphaelr@alkaonline.be's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile") Topic Author - [ Offline](/forum/user/39505-raphaelr-alkaonline-be) Less More - Posts: 12 - Thank you received: 0 - - 7 years 11 months ago [\#301228](#301228) by [raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile") *[Intercept "next page" on checkout for custom plugin.](/forum/31-development/896378-intercept-next-page-on-checkout-for-custom-plugin#301228 "Hello everybody. I am currently creating a plugin for hikashop. During the checkout process I added some fields dynamically with onCheckoutStepDisplay and onCheckoutStepList. My fields are correctly created and works well. But if the fields are not filled I would like to make an alert to the customer before he goes to the next checkout step. Something "are you sure you didn't want to blablabla...". I tried to "intercept" the submit of the form (the checkout is not in ajax on the website I am working on) but the event.prenventDefault() doesn't work. So I made some research and found that there's something to do with window.Oby but I can't find what to do and if this is compatible without using the ajax checkout. Please I need some help. Best regards.")* was created by *[raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile")* Hello everybody. I am currently creating a plugin for hikashop. During the checkout process I added some fields dynamically with onCheckoutStepDisplay and onCheckoutStepList. My fields are correctly created and works well. But if the fields are not filled I would like to make an alert to the customer before he goes to the next checkout step. Something "are you sure you didn't want to blablabla...". I tried to "intercept" the submit of the form (the checkout is not in ajax on the website I am working on) but the event.prenventDefault() doesn't work. So I made some research and found that there's something to do with window.Oby but I can't find what to do and if this is compatible without using the ajax checkout. Please I need some help. Best regards. Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzMxLWRldmVsb3BtZW50Lzg5NjM3OC1pbnRlcmNlcHQtbmV4dC1wYWdlLW9uLWNoZWNrb3V0LWZvci1jdXN0b20tcGx1Z2luP3RtcGw9bWFya2Rvd24=) or [Create an account](/register) to join the conversation. - **[nicolas](/forum/user/63-nicolas "View nicolas's Profile")** - [![nicolas's Avatar](https://www.hikashop.com/media/kunena/avatars/resized/size144/users/avatar63.png?1793428657)](/forum/user/63-nicolas "View nicolas's Profile") - [ Away](/forum/user/63-nicolas) Less More - Posts: 86324 - Thank you received: 14286 - - 7 years 11 months ago [\#301231](#301231) by [nicolas](/forum/user/63-nicolas "View nicolas's Profile") Replied by *[nicolas](/forum/user/63-nicolas "View nicolas's Profile")* on topic *[Intercept "next page" on checkout for custom plugin.](/forum/31-development/896378-intercept-next-page-on-checkout-for-custom-plugin#301231 "Hello everybody. I am currently creating a plugin for hikashop. During the checkout process I added some fields dynamically with onCheckoutStepDisplay and onCheckoutStepList. My fields are correctly created and works well. But if the fields are not filled I would like to make an alert to the customer before he goes to the next checkout step. Something "are you sure you didn't want to blablabla...". I tried to "intercept" the submit of the form (the checkout is not in ajax on the website I am working on) but the event.prenventDefault() doesn't work. So I made some research and found that there's something to do with window.Oby but I can't find what to do and if this is compatible without using the ajax checkout. Please I need some help. Best regards.")* Hi, If you implement the onAfterCheckoutStep trigger [ www.hikashop.com/support/documentation/6...#onAfterCheckoutStep](https://www.hikashop.com/support/documentation/62-hikashop-developer-documentation.html#onAfterCheckoutStep) in your plugin. There, check if the data is there, and if not set the variable $go_back to true and the user won't be able to go to the next step. You can also use the $app->enqueueMessage() function of Joomla to display a message to the user. Now that's in PHP. If you also want to do a similar check in javascript, you can redefine the window.checkout.onFormSubmit function like that: Code: window.checkout.onFormSubmit = function(form) { // your code // return false if you don't want the form to submit. } That will be triggered when you click on the "next" button of each step of your checkout. Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzMxLWRldmVsb3BtZW50Lzg5NjM3OC1pbnRlcmNlcHQtbmV4dC1wYWdlLW9uLWNoZWNrb3V0LWZvci1jdXN0b20tcGx1Z2luP3RtcGw9bWFya2Rvd24=) or [Create an account](/register) to join the conversation. - **[raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile")** - [![raphaelr@alkaonline.be's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile") Topic Author - [ Offline](/forum/user/39505-raphaelr-alkaonline-be) Less More - Posts: 12 - Thank you received: 0 - - 7 years 10 months ago - 7 years 10 months ago [\#301287](#301287) by [raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile") Replied by *[raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile")* on topic *[Intercept "next page" on checkout for custom plugin.](/forum/31-development/896378-intercept-next-page-on-checkout-for-custom-plugin#301287 "Hello everybody. I am currently creating a plugin for hikashop. During the checkout process I added some fields dynamically with onCheckoutStepDisplay and onCheckoutStepList. My fields are correctly created and works well. But if the fields are not filled I would like to make an alert to the customer before he goes to the next checkout step. Something "are you sure you didn't want to blablabla...". I tried to "intercept" the submit of the form (the checkout is not in ajax on the website I am working on) but the event.prenventDefault() doesn't work. So I made some research and found that there's something to do with window.Oby but I can't find what to do and if this is compatible without using the ajax checkout. Please I need some help. Best regards.")* Thanks for your answer. It's the javascript side that I needed. I'll make some tests Last edit: 7 years 10 months ago by [raphaelr@alkaonline.be](/forum/user/39505-raphaelr-alkaonline-be "View raphaelr@alkaonline.be's Profile"). 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