What is the difference between == and === *?

The main difference between the == and === operator in javascript is that the == operator does the type conversion of the operands before comparison, whereas the === operator compares the values as well as the data types of the operands.

What is the difference between === and == in JavaScript?

=== — strict equality (triple equals) == — loose equality (double equals)

What is the difference between == and === please elaborate your answer with some examples?

= is used for assigning values to a variable, == is used for comparing two variables, but it ignores the datatype of variable whereas === is used for comparing two variables, but this operator also checks datatype and compares two values.

What is the difference between == and === in react?

The difference between == and === is that: == converts the variable values to the same type before performing comparison. This is called type coercion. === does not do any type conversion (coercion) and returns true only if both values and types are identical for the two variables being compared.

What is difference between equality and identical operator *?

Both are comparison operators used to compare two or more values. == Operator: This operator is used to check the given values are equal or not. If yes, it returns true, otherwise it returns false. === Operator: This operator is used to check the given values and its data type are equal or not.

Difference Between == and === in JavaScript

What this == and === operators means?

The equal-to operator ( == ) returns true if both operands have the same value; otherwise, it returns false . The not-equal-to operator ( != ) returns true if the operands don't have the same value; otherwise, it returns false .

When would you use the === identity operator?

Identical Operator ===

The comparison operator called as the Identical operator is the triple equal sign “===”. This operator allows for a much stricter comparison between the given variables or values. This operator returns true if both variable contains same information and same data types otherwise return false.

What does === mean in React?

The strict equality ( === ) operator checks whether its two operands are equal, returning a Boolean result. Unlike the equality operator, the strict equality operator always considers operands of different types to be different.

What does => means in React?

The () => { ... } is the function. It's an ES6-style "arrow" function expression. These are like function expressions ( tick = function() { ... } ) except that the this value within the function is inherited from the context in which it's defined rather than being set when the function is called.

Why do we use 3 dots in React?

These three dots are called the spread syntax or spread operator. The spread syntax is a feature of ES6, and it's also used in React. Spread syntax allows you to deconstruct an array or object into separate variables.

What is the difference between == and === in Python?

The = is a simple assignment operator. It assigns values from right side operands to the left side operand. While on the other hand == checks if the values of two operands are equal or not. If yes, the condition becomes true and it returns a non zero value.

What does Java === mean?

=== means strictly equal in JavaScript. You can not use it for objects, arrays, functions.

What is the difference between '=' and operator?

First of all = is a assignment operator and == is a comparison operator. = operator is used to assign value to a variable and == operator is used to compare two variable or constants.

What is the difference between == and === in angular?

== is used for comparison between two variables irrespective of the datatype of variable. === is used for comparision between two variables but this will check strict type, which means it will check datatype and compare two values.

Is && the same as and?

"&&" and "and" both are logical AND operations and they do the same thing, but the operator precedence is different.

What is the difference between && || operators and and or?

&& is used to perform and operation means if anyone of the expression/condition evaluates to false whole thing is false. || is used to perform or operation if anyone of the expression/condition evaluates to true whole thing becomes true. so it continues till the end to check atleast one condition to become true.

Why is && used in React?

Inline If with Logical && Operator

It works because in JavaScript, true && expression always evaluates to expression , and false && expression always evaluates to false . Therefore, if the condition is true , the element right after && will appear in the output. If it is false , React will ignore and skip it.

What is callback in React?

In React, callback functions like event handlers inside a component are re-created as unique function objects at every re-render of the component. When a callback is passed from a parent to a child as a prop, the child component re-renders just because of the absence of referential integrity of the callback.

Can I use JSX without React?

JSX is not a requirement for using React. Using React without JSX is especially convenient when you don't want to set up compilation in your build environment. Each JSX element is just syntactic sugar for calling React.createElement(component, props, ...children) .

What is empty <> In React?

The React framework offers a shorthand syntax for fragment components that appears as an empty tag: <></> . While it is supported in JSX syntax, it is not part of the HTML standard and thus is not supported natively by browsers.

Should I use React fragment or <>?

You should use the React Fragment when you want to add a parent element to fulfill the JSX syntax, but without introducing an extra node to the DOM. After compilation, the fragment component does not make it to the DOM—only the children element do.

What does $( this represent with each method?

$(this) is just used to wraps the DOMElement in a jQuery object so you can apply jQuery method on this .

What is the use of shift operators *?

The bitwise shift operators are the right-shift operator ( >> ), which moves the bits of an integer or enumeration type expression to the right, and the left-shift operator ( << ), which moves the bits to the left.

What is the difference between strict comparison and loose comparison?

The loose equality operator '==' allows us to compare two or more operands by converting their value to a common type first and then checking for the equality between them. strict equality operator '===' allows us to compare two or more operands by checking the equality between the values as well as their types .

What is the use of indirect operator?

The * (indirection) operator determines the value referred to by the pointer-type operand. The operand cannot be a pointer to an incomplete type. If the operand points to an object, the operation yields an lvalue referring to that object.