Which one of the following is not a keyword in JavaScript?

Explanation: "eval" is not a keyword and is can be used as variable.

Which is not a keyword in JavaScript?

Keywords cannot be used as identifier names. For example, //invalid const new = 5; // Error! new is a keyword.

What are the keywords used in JavaScript?

Keywords are tokens that have special meaning in JavaScript: break , case , catch , continue , debugger , default , delete , do , else , finally , for , function , if , in , instanceof , new , return , switch , this , throw , try , typeof , var , void , while , and with .

Is name a keyword in JavaScript?

Show activity on this post. gedit highlighted name as a keyword. However, name is not listed by the pages linked to by an answer to a question about reserved keywords. I also did a couple trivial tests in SpiderMonkey, but name seemed to act like an ordinary identifier.

Is function a keyword in JavaScript?

JavaScript functions are defined with the function keyword. You can use a function declaration or a function expression.

Is value a keyword in JavaScript?

value here is not a "keyword", but a property of the DOM node returned by the getElementById call.

Is array a keyword in JavaScript?

Object , Array , Function and Number are not keywords, nor are they exactly "special" (whatever you think they mean) words. They're nothing more than built-in function/class types in JavaScript (you can do a typeof on them and see).

Is catch a keyword in JavaScript?

JavaScript try and catch

The try statement allows you to define a block of code to be tested for errors while it is being executed. The catch statement allows you to define a block of code to be executed, if an error occurs in the try block.

Which one is not a keyword Mcq?

Explanation: construct is not a keyword. All 32 Keywords are given for reference. auto, break, case, char, const, continue, default, do, double, else, enum, extern, float, for, goto, if, int, long, register, return, short, signed, sizeof, static, struct, switch, typedef, union, unsigned, void, volatile, while.

Which of the following is not a keyword pass?

6. Which of the following is not a keyword? a) eval Page 2 b) assert c) nonlocal d) pass Answer: a Explanation: eval can be used as a variable.

Which of the following are not Java keywords Mcq?

The extends keyword indicates that the new class is derived from the base or parent class using inheritance, and export is not a keyword in Java. Hence, the correct answer is option (b).

Is not function in JavaScript?

The JavaScript exception "is not a function" occurs when there was an attempt to call a value from a function, but the value is not actually a function.

Which of the following is not considered as an error in JavaScript?

6. Which of the following is not considered as an error in JavaScript? Explanation: Division by zero is not an error in JavaScript: it simply returns infinity or negative infinity.

Which keywords are used to handle exceptions in JavaScript?

JavaScript handles exceptions through the “try.. catch… finally” statement.

What is finally in JavaScript?

finally statements combo handles errors without stopping JavaScript. The try statement defines the code block to run (to try). The catch statement defines a code block to handle any error. The finally statement defines a code block to run regardless of the result.

Which of the following is not a valid JavaScript variable name?

JavaScript variable names should not start with a numeral (0-9). They must begin with a letter or an underscore character. For example, 123test is an invalid variable name but _123test is a valid one.

What is string in JavaScript?

A string is a sequence of one or more characters that may consist of letters, numbers, or symbols. Strings in JavaScript are primitive data types and immutable, which means they are unchanging.

What is in JavaScript array?

In JavaScript, an array is an ordered list of values. Each value is called an element specified by an index. An JavaScript array has the following characteristics: First, an array can hold values of mixed types. For example, you can have an array that stores elements with the types number, string, and boolean.

What is this keyword?

The this keyword refers to the current object in a method or constructor. The most common use of the this keyword is to eliminate the confusion between class attributes and parameters with the same name (because a class attribute is shadowed by a method or constructor parameter).

What is new keyword in JavaScript?

New keyword in JavaScript is used to create an instance of an object that has a constructor function. On calling the constructor function with 'new' operator, the following actions are taken: A new empty object is created.

Which keyword is used for function?

Explanation: Functions are defined using the def keyword.

How do you say not in JavaScript?

Just use the negation operator: if (!( 81 in keydown)) …

Which one is not a function?

1 Answer. A function is said to exist when we get a unique value for any value of x.. Therefore, Option B is correct.. y² = x is not a function as for each value of x, we will get 2 values of y.. which is not as per the definition of a function..

Is not a function in react JS?

The React. js "Uncaught TypeError: X is not a function" occurs when we try to call a value that is not a function as a function, e.g. calling the props object instead of a function. To solve the error, console. log the value you are calling and make sure it is a function.