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 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 JS?

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?

The function keyword can be used to define a function inside an expression. You can also define functions using the Function constructor and a function declaration.

Is event a keyword in JavaScript?

Then it works fine. My conclusion is 'event'is a reserved word which stands for event argument in Java Script.

JavaScript this Keyword

What are keyboard events in JavaScript?

What are JavaScript functions?

A function in JavaScript is similar to a procedure—a set of statements that performs a task or calculates a value, but for a procedure to qualify as a function, it should take some input and return an output where there is some obvious relationship between the input and the output.

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 not a 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 is not valid data type in JavaScript?

A variable with no value simply means it is undefined. 'a' doesn't contain any value, the data type is undefined. var b=null; The data type of a variable which doesn't contain a value is 'undefined', but the data type of a variable which contains a 'null' value is 'object' instead of 'null'.

Is boolean a keyword in JavaScript?

The boolean (not Boolean) is a primitive data type in JavaScript. It can have only two values: true or false. It is useful in controlling program flow using conditional statements like if else, switch, while loop, etc.

Is print a keyword?

Definition and Usage

The print keyword is used to output text. Unlike echo , print can only output one string at a time. Unlike echo , print has a return value, which is always 1.

Is module a keyword in JavaScript?

module keyword refers to the object representing the current module. The module object has a key named exports . module. exports is another object which is used for defining what can be exported by a module and can be made available to other modules.

Which of the following is not a JavaScript object?

B) var obj = { name ="Steve"}; is not a javascript object.

Which value is not false in JavaScript?

Description. A falsy value is something which evaluates to FALSE, for instance when checking a variable. There are only six falsey values in JavaScript: undefined , null , NaN , 0 , "" (empty string), and false of course.

Is not a function Java?

The Javascript error TypeError: "x" is not a function occurs when there is an attempt to call a function on a value or object, which is not actually a function.

Is not a function test?

The "test is not a function" error occurs when the test() method is called on a value that is not a regular expression, e.g. a string. To solve the error, make sure to only call the test method on regular expressions, e.g. /[a-b]/.

Which of the following is not a JavaScript operator?

1 Answer. The correct answer to this question “Which of the following is not considered a JavaScript operator” is option (b). this. Other than “this” all the other options are the JavaScript operators.

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.

Is string an object in JavaScript?

JavaScript String Object is a universal object that is used to store strings. A string is a combination of letters, numbers, special characters (single or double quotations), and arithmetic values.

How many types of JavaScript are there?

JavaScript has seven built-in types: null , undefined , boolean , number , string , object , and symbol . They can be identified by the typeof operator.

How many types of functions are there in JavaScript?

Functions in JavaScript are very similar to those of some other scripting high-level languages such as TypeScript and there are two types of functions: predefined and user-defined.

What are JavaScript variables?

Variable means anything that can vary. In JavaScript, a variable stores the data value that can be changed later on. Use the reserved keyword var to declare a variable in JavaScript.

Which of the following is not a keyboard?

Answer. Answer: AZERTY IS NOT ANY TYPE OF KEYBOARD .......