Online Access Free JavaScript-Developer-I Exam Questions

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No.# The correct answer is A. A popstate event is fired with a state property that details the application's last state.

When window.history.pushState() is used to add entries to the browser's history:

It creates a new history entry without reloading the page
When the user clicks the back button, the browser:
Moves back one step in the history stack
Fires a popstate event
The event object contains a state property with the state data from the previous entry
Example of handling this:

JavaScript

window.addEventListener('popstate', (event) => {
if (event.state) {
// Restore application to the state stored in event.state
updateUI(event.state);
}
});
The other options are incorrect because:

The page doesn't reload (option B)
There's no standard "navigate" event in this context (option C)
The page isn't navigated away from - navigation happens within the single-page context (option D)

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No.# correct ans should be : document.querySelector('#main li:nth-child(2)').innerHTML = "The Lion.";

No.# Document .querySelector(‘#row-uc’).classList.add(‘priority-account’);

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No.# Correct Ans is A

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No.# answer is A, B

No.# B is correct. 1.3.5 is the latest version in 1.3

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No.# The correct answer is:

B. ws.on('connect', () => { console.log('connected to client'); }); ws.on('error', (error) => { console.log('ERROR', error); });

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No.# Answer will be C here.
~1.3.0: The tilde symbol (~) means npm installs the latest patch version within the specified minor version. In this case, 1.3.1 would be installed because it's the highest patch version for 1.3.

No.# It must be B,D,E. Node does not Perform a static analysis code verification before execution to look for runtime errors, it requieres another tool for that task

No.# Answers are A and C. 'five' being a string won't allow the operation. Option B evaluates 2 as a number

No.# i checked in console the correct answer is 0012

No.# i checked in console the correct answer is 0012