xmlhttprequest object properties

Without the support for this object, the browser would not be able to exchange data with the web server and update parts of the page without . Did Dick Cheney run a death squad that killed Benazir Bhutto? Not the answer you're looking for? Changes from 0 to 4: Returns the status-number (e.g. AJAX programming makes extensive use of the XMLHttpRequest. Extensions (e.g., progress events and cross-origin requests) to XMLHttpRequest were developed in a separate draft (XMLHttpRequest Level 2) until end of 2011, at which point the two drafts were . XMLHttpRequest is a built-in browser object that allows to make HTTP requests in JavaScript. If the status property contains some other HTTP result code (such as 403 or 404), that indicates there was an error communicating with the web server.\r\n\r\nBecause these values are standard, it has become somewhat common practice to start out the onreadystatechange callback function code checking for them:\r\n

con.onreadystatechange = function() {\r\n    if (this.readyState == 4  && this.status == 200) {\r\n        var result = this.responseText;\r\n    }\r\n};

\r\nThe function only retrieves the data when the connection is complete and has returned valid data. The XMLHttpRequest object is the developers dream, because you can: Get certifiedby completinga course today! How to detect when user scrolls to the bottom of a div ? ","hasArticle":false,"_links":{"self":"https://dummies-api.dummies.com/v2/authors/10600"}}],"_links":{"self":"https://dummies-api.dummies.com/v2/books/"}},"collections":[],"articleAds":{"footerAd":"

","rightAd":"

"},"articleType":{"articleType":"Articles","articleList":null,"content":null,"videoInfo":{"videoId":null,"name":null,"accountId":null,"playerId":null,"thumbnailUrl":null,"description":null,"uploadDate":null}},"sponsorship":{"sponsorshipPage":false,"backgroundImage":{"src":null,"width":0,"height":0},"brandingLine":"","brandingLink":"","brandingLogo":{"src":null,"width":0,"height":0},"sponsorAd":"","sponsorEbookTitle":"","sponsorEbookLink":"","sponsorEbookImage":{"src":null,"width":0,"height":0}},"primaryLearningPath":"Advance","lifeExpectancy":null,"lifeExpectancySetFrom":null,"dummiesForKids":"no","sponsoredContent":"no","adInfo":"","adPairKey":[]},"status":"publish","visibility":"public","articleId":253381},"articleLoadedStatus":"success"},"listState":{"list":{},"objectTitle":"","status":"initial","pageType":null,"objectId":null,"page":1,"sortField":"time","sortOrder":1,"categoriesIds":[],"articleTypes":[],"filterData":{},"filterDataLoadedStatus":"initial","pageSize":10},"adsState":{"pageScripts":{"headers":{"timestamp":"2022-11-03T10:50:01+00:00"},"adsId":0,"data":{"scripts":[{"pages":["all"],"location":"header","script":"\r\n","enabled":false},{"pages":["all"],"location":"header","script":"\r\n