Thẻ ghi nhớ: Interactivity with JavaScript - Week 2 Quiz | Quizlet

Which tag is used to let the browser know that it is about to see JavaScript code?

Where can you put JavaScript?

A) In the section

B) In the section

C) In an external file

In B) and C) above

In A), B) and C) above

In A), B) and C) above

Which attribute is used to link to an external JavaScript file?

file; e.g., file = "extFile.js"

src; e.g., src = "extFile.js"

href; e.g., href = "extFile.js"

script; e.g., script = "extFile.js"

src; e.g., src = "extFile.js".

Which word is used to define a function in JavaScript?

function

func

define

function

Which of the following best defines the relationship between defining a function and calling a function?

A function can be defined multiple times in a single file

A function can be called multiple times in a single file.

A function can be called multiple times in a single file

A function can be called multiple times in a single file.

True

False

True

You can call a function without it being defined.

True

False

False

One of the events that the JavaScript API will listen for is onload.

True

B: False

True

You can use single quotes or double quotes when calling a function with an event.

True

False

True

Consider the following code:

This is paragraph one

This is paragraph two

The function Hello() will be called every time:

A) The page is loaded

B) The user clicks on any paragraph on the page

C) The user clicks on the second paragraph on the page

A and C

The function is never called.

A) The page is loaded.

Consider the following code:

This is paragraph one

This is paragraph two

The function Hello() will be called every time:

A) The user clicks on any paragraph on the page

B) The user places his/her mouse over any paragraph on the page

C) The user clicks on the second paragraph on the page

A and C

The function is never called.

The user clicks on the second paragraph on the page

What is syntactically wrong with this function definition?

function Hello();{

alert("Hello");

document.write("Hello on the screen");

}

The semicolon after Hello()

The fact that you are outputting the message twice

You can't use document.write after using an alert.

The semicolon after Hello()

Which is the correct syntax to change the contents of the HTML element below?

This is a quiz.

document.querySelector('#quiz').innerHTML = "New content!";

document.querySelectorAll('p').innerHTML = "New content!";

document.querySelectorAll('p').innerHTML("New content!");

document.querySelector('#quiz').innerHTML ("New content!");

document.querySelector('#quiz').innerHTML = "New content!";

The following is valid JavaScript code:

Click to Remove Me!

True

False

True

The following is valid JavaScript code:

The time is?

True

False

True

Which of the following best defines the difference between defining a function and calling a function?

Defining and calling a function are the same thing

You can call a function without it being defined first.

You can define a function without calling it.

You can define a function without calling it.

Which is the correct syntax to change the contents of the HTML element below?

This is a quiz.

document.getElementsByTagName('p').innerHTML = "New content!";

document.getElementsByTagName('p').innerHTML("New content!");

document.getElementById('quiz').innerHTML ("New content!");

document.getElementById('quiz').innerHTML = "New content!";

document.getElementById('quiz').innerHTML = "New content!";