Help with Stripe integration (Javascript) Wechat and Apple Pay

I have a number of things working with Stripe already incl. Wechat and Apple Pay. But I need some help. 1) I have two files that get the QRCode for WeChat and run a charge once a source is created. However I fail to send the customer to a checkout page (or redirect). Stripe documentation is not so helpful - any ideas how to accomplish that? [login to view URL] 2) I have Apple Pay working somewhat to open up the session. However I need this part to be written: From the Stripe Doc. [login to view URL] The second argument to buildSession is a function that will be called when the user has authorized the payment. This function takes two arguments. The first, result, will contain a Stripe token. You should pass this token to your server and create a charge (the example below uses jQuery to POST the token to a hypothetical /charges API on your server). If you're looking to make a recurring payment, you can instead attach the token to a customer and then subscribe them to a Plan. When you're done doing this work on your server, call the second parameter, completion, with ApplePaySession.STATUS_SUCCESS or ApplePaySession.STATUS_FAILURE depending on if your charge succeeded or failed. This will then show the user a success or failure animation in the payment sheet and dismiss it. Indeed I need the customer to be created and plan to be added. We have 6 different plans so that needs to come through as parameter. Once done completion must be called. Thanks a bunch!