What is if true in JavaScript?

“If” statements: where if a condition is true it is used to specify execution for a block of code. “Else” statements: where if the same condition is false it specifies the execution for a block of code. “Else if” statements: this specifies a new test if the first condition is false.

What is === in JavaScript?

=== (Triple equals) is a strict equality comparison operator in JavaScript, which returns false for the values which are not of a similar type. This operator performs type casting for equality. If we compare 2 with “2” using ===, then it will return a false value.

Is true == true in JavaScript?

Why does “true” == true show false in JavaScript? MDC describes the == operator as follows: If the two operands are not of the same type, JavaScript converts the operands then applies strict comparison.

What is the main purpose of JavaScript?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

What is null JavaScript?

The value null represents the intentional absence of any object value. It is one of JavaScript’s primitive values and is treated as falsy for boolean operations.

What is && mean?

The logical AND operator (&&) returns true if both operands are true and returns false otherwise.

Is 2 true in JS?

If both operands are objects, then JavaScript compares internal references which are equal when operands refer to the same object in memory. and 2 == 1 will be false. As false will be converted to 0 and 2 cannot be equal to 0 either.

What is not in JavaScript?

Logical NOT (!) The logical NOT ( ! ) operator (logical complement, negation) takes truth to falsity and vice versa. When used with non-Boolean values, it returns false if its single operand can be converted to true ; otherwise, returns true .

Is JavaScript used for backend?

JavaScript is used in both Back End and Front End Development. JavaScript is used across the web development stack. That’s right: it’s both front end and backend.

When to use a conditional statement in JavaScript?

Conditional statements are used to decide the flow of execution based on different conditions. If a condition is true, you can perform one action and if the condition is false, you can perform another action. Different Types of Conditional Statements There are mainly three types of conditional statements in JavaScript.

Which is an example of a condition in JavaScript?

Condition: An expression which evaluates to true or false. The example executes the same thing as the previous one, but parentheses make the code more readable, so we recommend using them. // the comparison operator “number != 18” executes first anyway // (no need to wrap it into parentheses) let booleanValue = number != 18 ? false : true;

When to use a condition operator in JavaScript?

If the condition is true, the operator returns the value of value1; otherwise, it returns the value of value2. Condition: An expression which evaluates to true or false. The example executes the same thing as the previous one, but parentheses make the code more readable, so we recommend using them.

What does true not true mean in JavaScript?

!true (not true) means false, so the else is returned. The syntax of A ? B : C means that if A is TRUE, then return the value B. Else return value C. Since A is FALSE, it returns the value C which happens to be true. Because (!true) is false, and then the right side of the : is chosen. True is false and false is true.