Which of the following code is used to check the web worker object is exists or o the web worker object is not exists it will create a new web worker. a. wObi = new Worker("testWorkerFile. js"); if (typeof(wObi) == "undefined") alert("Web worker is created successfully') b. if (typeof(wobj) "undefined") { wObj = new Worker("testWorkerFile. js"); c. wobi = new Worker("testWorkerFile. js"); if (typeof(wobi) == Worker) alert(“Web worker is created successfully") else wObj = new Worker("testWorkerFile. js"); d. wObi = new Worker("testWorkerFile. js"); if (typeof(wobj) == "undefined") alert(“Web worker is created successfully") else { WObi = new Worker("testWorkerFile. js");

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Which of the following code is used to check the web worker object is exists or o the web worker object is not exists it will create a new web worker. a. wObi = new Worker("testWorkerFile. js"); if (typeof(wObi) == "undefined") alert("Web worker is created successfully') b. if (typeof(wobj) "undefined") { wObj = new Worker("testWorkerFile. js"); c. wobi = new Worker("testWorkerFile. js"); if (typeof(wobi) == Worker) alert(“Web worker is created successfully") else wObj = new Worker("testWorkerFile. js"); d. wObi = new Worker("testWorkerFile. js"); if (typeof(wobj) == "undefined") alert(“Web worker is created successfully") else { WObi = new Worker("testWorkerFile. js");
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