Question

Which event handler is used to loads the data and send the data in HTML - Cross-orign resource sharing?​

Answer 1

Answer:

Explanation:

Cross-origin resource sharing (CORS) is a mechanism to allows the restricted resources from another domain in web browser.

For suppose, if you click on HTML5- video player in html5 demo sections. it will ask camera permission. if user allow the permission then only it will open the camera or else it doesn't open the camera for web applications.

Making a CORS request

Here Chrome, Firefox, Opera and Safari all use the XMLHttprequest2 object and Internet Explorer uses the similar XDomainRequest object, object.

function createCORSRequest(method, url) {

var xhr = new XMLHttpRequest();

if ("withCredentials" in xhr) {

// Check if the XMLHttpRequest object has a "withCredentials" property.

// "withCredentials" only exists on XMLHTTPRequest2 objects.

xhr.open(method, url, true);

} else if (typeof XDomainRequest != "undefined") {

// Otherwise, check if XDomainRequest.

// XDomainRequest only exists in IE, and is IE's way of making CORS requests.

xhr = new XDomainRequest();

xhr.open(method, url);

} else {

// Otherwise, CORS is not supported by the browser.

xhr = null;

}

return xhr;

}

var xhr = createCORSRequest('GET', url);

if (!xhr) {

throw new Error('CORS not supported');

}

Answer 2

Onprogress  event Handler

Explanation:

event handler is used to loads the data and send the data in HTML-Cross-orign resource sharing

Onprogress  event Handler

Onprogress  event Handler  is used to  loads the data and send the data

If more than one event is triggered and the progress event is included , the next event may include a function

#Learn more:

Which of the following is a container for storing data ?(a) Variable (b) Integer (c) Event (d) Event handler

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