Front-End Development Course Flashcards
7 cards from real Front End Development practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Front-End Development Course flashcards as text
Which CSS property controls the stacking order of overlapping elements?
Answer: z-index
z-index determines which element appears on top when elements overlap, with higher values placed in front.
What does the CSS `box-sizing: border-box` rule do?
Answer: Includes padding and border in the element's total width and height
border-box makes width and height include padding and border, so the element never exceeds its declared size.
In JavaScript, what is the output of `typeof null`?
Answer: "object"
typeof null returns "object" due to a historical bug in JavaScript's type system that was never fixed for backward compatibility.
Which HTML element is used to define a self-contained piece of content that could be independently distributed?
Answer:
represents self-contained content like a blog post or news story that makes sense on its own.
What is the purpose of the CSS `::before` pseudo-element?
Answer: Inserts generated content before an element's actual content
::before inserts a generated content box as the first child of the selected element, commonly used with the `content` property.
Which HTTP status code indicates a successful GET request that returned content?
Answer: 200
200 OK is returned when the server successfully processed the request and is returning the requested content.
In CSS Flexbox, what does `justify-content: space-between` do?
Answer: Places equal space between items, with no space at the edges
space-between distributes items so the first is at the start, the last at the end, and equal space fills between the rest.
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