Q. What is the purpose of the method createDocumentFragment()?

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Q. What is the default value of the asyc attribute?

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Q. What is the method to create a data frame ?

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Q. What is the purpose of creating a data frame?

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Q. Which of the following navigator object properties is the same in both Netscape and IE?

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Q. Which best explains getSelection()?

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Q. Which of the following are client-side JavaScript object?

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Q. What is the purpose of the method localeCompare()?

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Q. When the 'end' event fires on EOF when no more data will arrive, which function is called?

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Q. What is the purpose of lazy loading?

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Q. Where is the external JavaScript placed in the case of lazy loading?

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Q. What are the parameters of the attachEvent function?

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Q. What is the result when the showPerformanceMetrics() is called before loading the remote script?

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Q. Which of the following is an attribute to the script object?

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Q. Which is the method used to add an event listener?

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Q. What is the purpose of the domLoading attribute?

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Q. How is the render time calculated?

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Q. What is the inital step to set up a CSS Lazy Loading?

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Q. What is the purpose of holding whatever tag you create in the attribute type?

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Q. What does the rel attribute of a variable have when the type of file is CSS?

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