JavaScript Line Length and Line Breaks Mockest | JavaScript

1.

What is the recommended maximum line length in JavaScript?

A). 80 characters B). 100 characters C). 120 characters D). 150 characters

2.

Which operator can be used to break a long string into multiple lines in JavaScript?

A). Concatenation (+) Operator B). Subtraction (-) Operator C). Multiplication (*) Operator D). Division (/) Operator

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3.

In ES6, what character is used to indicate multiline strings in template literals?

A). Backslash () B). Forward Slash (/) C). Backtick (`) D). Single Quote (')

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4.

How can you break a long line of code in JavaScript without using an operator?

A). Using Array Join Method B). Using String Concatenation C). Using Regular Expressions D). Using String Length Property

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5.

Which method is commonly used to join array elements into a string with line breaks?

A). split() B). splice() C). concat() D). join()

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6.

What character sequence is used for a line break in JavaScript strings?

A). \n B). \t C). \r D). \b

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7.

When breaking a long line in JavaScript, which of the following is a recommended practice?

A). Break lines randomly for variety B). Break lines at logical points C). Break lines only at the end of statements D). Never break lines, keep them as is

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8.

What happens if a line break is placed inside a string without appropriate handling in JavaScript?

A). It throws a syntax error B). It causes a runtime exception C). It ignores the line break D). It creates a multiline string

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9.

Which tool can help automate code formatting, including line breaks, in JavaScript?

A). ESLint B). Webpack C). Babel D). jQuery

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10.

In JavaScript, what is the purpose of maintaining consistent line lengths?

A). It reduces code performance B). It improves code readability C). It increases code execution time D). It limits code functionality

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JavaScript Line Length and Line Breaks Mocktest

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