Technical Question Library

Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

Which mechanism allows a web application to request resources from a different origin than its own?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

What is the result of the following code snippet? const arr = [1, 2, 3]; const newArr = […arr, 4]; console.log(newArr.length);

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

Which CSS property is used to control the alignment of flex items along the cross-axis?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

What is the primary function of the ‘defer’ attribute when added to a script tag?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

Which HTTP status code indicates that a requested resource has been permanently moved to a new URI?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

What is the result of this code? const obj = { a: 1 }; Object.freeze(obj); obj.a = 2; console.log(obj.a);

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

Which behavior occurs when a browser encounters a ‘fetch’ request with ‘credentials: same-origin’ to a different domain?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

What is the primary effect of the ‘contain’ CSS property with a value of ‘strict’ on an element?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

Which mechanism prevents the browser from executing a script if its integrity hash does not match the fetched content?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

What is the primary purpose of the ‘localStorage’ API in modern web browsers?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

Which HTTP header is used to prevent browsers from interpreting files as a different MIME type than specified?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

What is the result of the following JavaScript code snippet? console.log(0.1 + 0.2 === 0.3);

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

Which CSS property is used to create a new Block Formatting Context (BFC) to prevent margin collapsing?

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Web Standards & Fundamentals Medium

Web Development → Web Standards & Fundamentals

What is the primary effect of the ‘defer’ attribute on a script tag in an HTML document?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

What is the primary consequence of setting ‘passive: true’ on a touch event listener?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

Which behavior occurs when a browser encounters a ‘preload’ link tag with an incorrect ‘as’ attribute?

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

What is the result of executing the following code snippet in a modern browser environment? const p = Promise.resolve(); p.then(() => console.log(1)); queueMicrotask(() => console.log(2)); setTimeout(() => console.log(3), 0);

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Web Standards & Fundamentals Hard

Web Development → Web Standards & Fundamentals

What is the specific effect of the ‘contain: strict’ CSS property on a layout container?

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