JavaScript String Operators Mockest | JavaScript

1.

What does the + operator do with strings?

A). Concatenates strings B). Compares strings C). Trims strings D). Converts strings to uppercase

2.

How do you concatenate two strings in JavaScript?

A). string1.concat(string2) B). string1 + string2 C). string1.join(string2) D). string1.combine(string2)

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3.

Which operator can be used to combine a string with a number in JavaScript?

A). + B). - C). * D). /

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4.

What is the result of '5' + 3 in JavaScript?

A). '53' B). 8 C). 53 D). '5 3'

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5.

How do you find the length of a string in JavaScript?

A). string.length B). string.size C). string.length() D). lengthOf(string)

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6.

What does the .concat() method do in JavaScript?

A). Concatenates two or more strings B). Compares two strings C). Converts a string to lowercase D). Finds a substring in a string

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7.

How do you convert a string to uppercase in JavaScript?

A). string.toUpperCase() B). string.uppercase() C). string.toUppercase() D). string.upperCase()

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8.

What does the .toLowerCase() method do in JavaScript?

A). Converts all characters to lowercase B). Converts all characters to uppercase C). Trims leading and trailing whitespace D). Converts string to a boolean

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9.

What is the correct way to compare two strings in JavaScript for equality?

A). string1 == string2 B). string1.compare(string2) C). string1.equals(string2) D). string1 === string2

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10.

Which method can you use to check if a string includes a specific substring in JavaScript?

A). .includes() B). .contains() C). .hasSubstring() D). .indexOf()

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