I want to call payment gateway, for that payment gateway is called using form submission with the method as post, Can I call the same gateway using post API call from node js HTTP module, I am confused, that I cannot call gateway using post API cause it won't redirect to new page, and form have method and action which can redirect to new page with post call?
There are multiple ways to submit a form from the browser:
HTML form, submit button, user presses submit button, no Javascript involved.
HTML form in the page, Javascript gets DOM element for the form and calls .submit() method on the form object.
Ajax call using the XMLHttpRequest interface with the POST method and manually sending appropriate form data.
Ajax Fetch call with the POST method and manually sending appropriate form data.
With #1 or #2, the browser sends the form and the browser will pay attention to redirects and will display the form response (whether redirected or not) in the browser.
With #3 and #4, the form is sent via Javascript and the response comes back to your Javascript. #3 does not process redirects. #4 has an option to process redirects. Here's more info on each of the above options. #3 and #4 do not affect the browser display is not affected at all unless you program your own Javascript to process the request and affect the browser display (either by inserting content or setting window.location to a new URL.
Here's some more info on the above schemes:
Programmatic Ajax calls with XMLHttpRequest do not process redirects or the response from the Ajax call in any way. They just return that response to YOUR Javascript. Keep in mind that a redirect is just one specific type of response you can get back from an Ajax call. This is different than a browser submitted form POST.
Programmatic Ajax calls with the fetch() interface offer an option to follow redirects automatically. See the redirect option here. But, even in this case, all the fetch() interface does is get the contents of the redirected URL. It does not cause the browser page to change. To so that, you would have to write your own Javascript code to either see the 3xx redirect response and then set window.location to the new redirect URL. Or, you would have to let the interface follow the redirect automatically and then do something with the new redirected content that it will return to your Javascript.
These programmatic requests different than letting the browser submit a form for you. In the browser submitted case (without using Javascript to submit the form), the browser follows redirects and updates the display in the browser based on whatever content is returned from the form response.
When you submit a form via Ajax, the browser does nothing automatically with the server response. That response goes back to your Javascript and your script decides what to do with it. If you want your script to follow redirects, then you have to examine the response, see if it's a 3xx status, get the new URL from the appropriate header and set window.location to that new URL. That will then cause the browser to display the redirect page. But, you have to either program that yourself or find an Ajax library that offers a feature to do it form. A standard Ajax call just returns the form POST response back to your Javascript - that's all. Your script has to process that response and decide what to do next.
I am confused, that I cannot call gateway using post API cause it won't redirect to new page
You can. You just need to write your own Javascript to process the response from the programmatic API call and, if its a 3xx redirect, then set window.location to the new URL to instruct the browser to load the new redirected page.
Form data is usually sent like
address=Stackoverflow&poster=Ashkay
Whereas a normal post in JSON format will be like
{
"address": "stackoverflow",
"poster": "Ashkay"
}
You can mimic a form POST request in NodeJS, e.g:
const request = require("request");
request({
uri: "http://www.test.com/payment/gateway.php",
method: "POST",
form: {
address: "Stackoverflow",
name: "Ashkay"
}
}, function(error, response, body) {
console.log(body);
});
WKWebView has a bug that user's http body of post request coming from webview will be dropped.
so, I want to resend the post request by evaluating javascript.
I want to know if there is any way to get the form element in function decidePolicyForNavigationAction?
My thought is that I can look the URL of request in decidePolicyForNavigationAction, if it is a post request, then I can use javascript to get the form and compose a post request with HTTPBody and send it out.
Is it possible?
Thanks
Problem:
I need to send a request from javascript to the server, containing a set header, that will reload the entire browser window on response.
jQuery ajax it seems does not fully load the browser window and can only re-target the document.
Essentially I'd like to do a window.location.reload(true) whilst also setting a request header.
You can't specify custom HTTP headers other then when using XMLHttpRequest.
How to stop loading of iframe when the response for first request come.i have include this but this will load complete url which i don't want.i only want to set cookies from first request response
This is cross domain request
i have tried JSON get request but it is not setting cookies in my browser whihc i can use in next request.
please help us
this can be done by the window.stop():
try
window.frames[0].stop()
I am just trying to access a webservice or any webpage for that matter through ajax(only ajax is allowed for some reasons).The webservice is protected by coroporate SSO. In the sense, when the webpage X is requested for the first time, you get redirected to the login page Y,which is outside of the app. Upon authentication,you get auto redirected to the page X. Subsequent requests to page X will work without authentication. Of course, all these are handled through cookies. Whether or not to display login page Y is determined by the presence/validity/content of a few cookies.
Now, I am trying to access this protected resource X through ajax. Is it possible to achieve this using ajax? How can cookies be handled in an ajax request?
AJAX uses GET and POST requests, so cookies are sent in the same way as when you do a GET or POST request when loading a new page.