{"id":3514,"date":"2019-06-24T10:25:27","date_gmt":"2019-06-24T10:25:27","guid":{"rendered":"http:\/\/codethataint.com\/blog\/?p=3514"},"modified":"2020-07-28T04:15:00","modified_gmt":"2020-07-28T04:15:00","slug":"observable-and-observer","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/observable-and-observer\/","title":{"rendered":"Observable and Observer"},"content":{"rendered":"
    \n
  1. Obersvable and Observer are from RxJS similiar to Event and Event listener<\/li>\n
  2. Observer can listen to three actions of observable that is next, error and complete<\/li>\n
  3. Below we create a observer JSON key value pair and calling function based on the action from observable<\/li>\n
  4. We need to subscribe to Observable in ourcase observable and pass observer as parameter<\/li>\n
  5. We should unsubscribe to obeservable once we are done inorder to prevent memory leaks<\/li>\n<\/ol>\n

    test.html<\/strong><\/p>\n

    \r\n<script type="text\/javascript" src="https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/rxjs\/5.4.0\/Rx.js"><\/script>\r\n\r\n    <script>\r\n        var observer = {\r\n            next: function (value) { console.log(value); },\r\n            error: function (error) { console.log(error); },\r\n            complete: function () { console.log("Completed..!") }\r\n        };\r\n\r\n\r\n        const observable = new Rx.Observable(obs => {\r\n            obs.next(102);\r\n            obs.next(103);\r\n            setTimeout(function () {\r\n                obs.next(109);\r\n                obs.complete("Completed");\r\n            }, 2000);\r\n        });\r\n\r\n        observable.subscribe(observer);\r\n    <\/script>\r\n<\/pre>\n
    Observable over Stream<\/strong>
    \nObservable is similar to event which keeps happening. During its occurance it could emit values, throw error or comes to complete.
    \n\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"
    Obersvable and Observer are from RxJS similiar to Event and Event listener Observer can listen to three actions of observable that is next, error and complete Below we create a observer JSON key value pair and calling function based on the action from observable We need to subscribe to Observable in ourcase observable and pass… Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[285],"tags":[],"class_list":["post-3514","post","type-post","status-publish","format-standard","hentry","category-rxjs"],"_links":{"self":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/comments?post=3514"}],"version-history":[{"count":3,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3514\/revisions"}],"predecessor-version":[{"id":3861,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/3514\/revisions\/3861"}],"wp:attachment":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/media?parent=3514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/categories?post=3514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/tags?post=3514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}