What happens if document.write() is executed after the document has finished loading? | JavaScript | MYTAT

Q

What happens if document.write() is executed after the document has finished loading?

A). It appends content to the end of the document. B). It overwrites the entire content of the document. C). It triggers an error in the console. D). It inserts content before the <head> section.

Answer & Solution

Answer: Option Option B

Solution:

If document.write() is executed after the document has finished loading, it overwrites the entire content of the document, including the existing HTML structure. This can lead to unexpected behavior and issues with the document's layout and structure. It's crucial to use document.write() before or during the document loading process to ensure proper integration of dynamically generated content without affecting the existing document structure.

Related Questions on Average

How can document.write() be used to create a simple HTML structure?

A). By executing JavaScript code directly.

B). By defining external references within the content.

C). By concatenating strings to form HTML elements.

D). By using CSS transitions to generate elements.

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Which method can be used to ensure proper document structure when using document.write() in JavaScript?

A). Using document.createElement() alongside document.write().

B). Including document.write() within external script files.

C). Combining document.write() with external CSS stylesheets.

D). Executing document.write() after the document has loaded.

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How does document.write() differ from innerHTML in JavaScript?

A). document.write() can only write plain text content.

B). document.write() can only write HTML content.

C). innerHTML can execute JavaScript code within the written content.

D). innerHTML can write content within specific HTML elements.

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How does document.write() handle JavaScript code execution within written content?

A). It executes JavaScript code within written content.

B). It ignores JavaScript code within written content.

C). It triggers an error if JavaScript code is included.

D). It converts JavaScript code into plain text.

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Which method should be avoided when using document.write() in JavaScript?

A). Including multiple document.write() statements within one script.

B). Encapsulating document.write() within functions.

C). Using document.write() to generate dynamic content.

D). Executing document.write() before the <body> tag.

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How does document.write() impact the performance of a webpage?

A). It improves the performance by reducing page load times.

B). It has no impact on performance.

C). It may degrade performance due to delays in content rendering.

D). It optimizes code execution for better performance.

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Which of the following is NOT a common use case for document.write() in JavaScript?

A). Generating dynamic content based on user input.

B). Embedding external resources such as scripts or stylesheets.

C). Displaying personalized messages or greetings.

D). Creating complex data structures or algorithms.

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What is the primary purpose of using document.write() in JavaScript?

A). To modify existing HTML elements

B). To add event listeners to HTML elements

C). To generate and output dynamic content to a webpage

D). To validate user input

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Which scenario is NOT suitable for using document.write() in JavaScript?

A). Creating a login form with validation.

B). Generating a personalized greeting message.

C). Displaying real-time data from an external API.

D). Adding event listeners to form elements.

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How does document.write() impact the SEO (Search Engine Optimization) of a webpage?

A). It improves SEO by adding dynamic keywords to the document.

B). It has no impact on SEO.

C). It may negatively impact SEO by affecting page load times.

D). It optimizes page ranking by adding meta tags dynamically.

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