JavaScript Booleans: In this tutorial, we will learn about the Boolean data types in JavaScript with the help of examples.
There’s another way to convert any value to a boolean value. And that is by using the Bang Bang (!!) operator. This operator is a shorthand and a more convenient way to infer a boolean value from a value. It works the same way as theBoolean()object under the hood. So, all the...
OperatorDescriptionExample ==equal toif (day == "Monday") >greater thanif (salary > 9000) <less thanif (age < 18) The Boolean value of an expression is the basis for all JavaScript comparisons and conditions. Everything With a "Value" is True ...
The JavaScript typeof operator is a useful and easy way to check the type of a variable in your code. It can be used to determine if data is an array, boolean or other.
JavaScript Tutorials JavaScript typeof Operator JavaScript null and undefined JavaScript Type Conversion JavaScript Comparison and Logical Operators JavaScript Operators JavaScript Number.isInteger() JavaScript BooleansIn JavaScript, booleans are the primitive data types that can either be true or false...
The result is stored and used directly in a condition. $ node main.js true Access granted Logical OR operatorThe logical OR operator (||) returns true if at least one operand is truthy. main.js let isAdmin = false; let isModerator = true; let hasPrivileges = isAdmin || isModerator; ...
In JavaScript, the following values are considered “falsy”: false 0 (zero) "" (empty string) null undefined NaN So, if you use if(str) statement, it will return true for any string which is not “falsy”. It is important to note that when using the == operator, the string “fals...
Here are some examples:OperatorDescriptionExample == equal to if (day == "Monday") > greater than if (salary > 9000) < less than if (age < 18)The Boolean value of an expression is the fundament for JavaScript comparisons and conditions.Everything With a "Real" Value is True...
Boolean is a data type in JavaScript. Boolean can have only two values, true or false. It is useful in controlling program flow using conditional statements.
To convert a string to a boolean, we can use the triple equals operator===in JavaScript. The triple equals (===) operator in JavaScript helps us to check both type and value, so it returns “true” when both side values have same type and value otherwise it returns “false”. ...