This depends on the user’s browser and OS. In the case of Netscape with Windows OS,all the cookies are stored in a single file called cookies.txt c:\Program Files\Netscape\Users\username\cookies.txt In the case of IE,each cookie is stored in a separate file namely username@website.txt. c:\Windows\Cookies\username@Website.txt In web development interviews, when asked about where cookies are actually stored on the hard disk, the correct answer would be: “Cookies are not directly stored on the hard disk. Instead, they are stored as small text files…

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Undefined value means the variable used in the code doesnt exist or is not assigned any value or the property doesnt exist. In JavaScript, undefined is a primitive value that is automatically assigned to variables that have been declared but not initialized with a value. It indicates that a variable has been declared but has not been assigned any value explicitly. Here’s a breakdown: Declared but Uninitialized Variables: When a variable is declared but not assigned a value, it automatically…

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It is perfectly legal to assign a number to a variable and then assign a string to the same variable as followsexample i = 10; i = “string”; This is called variable typing In JavaScript, variable typing refers to the dynamic typing nature of the language. This means that variables in JavaScript can hold values of any data type, and the data type of a variable can change during the execution of a program. For example, you can declare a…

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=== is strict equality operator ,it returns true only when the two operands are having the same value without any type conversion. In JavaScript, the === operator is called the “strict equality operator.” It compares two values, checking both their value and their data type to determine if they are equal. Here’s how it works: If the types of the two values being compared are different, === returns false without any type conversion. If both values are of the same…

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The following example illustrates thisIt creates a function called square with argument x and returns x multiplied by itself. var square = new Function (“x”,”return x*x”); In JavaScript, you can create a function using the function constructor. The syntax for creating a function using the function constructor is as follows: javascriptCopy code var functionName = new Function(arg1, arg2, …, argN, functionBody); Here’s an explanation of each part: functionName: This is the name of the function you’re creating. It’s optional, and…

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The == checks for value equality, but === checks for both type and value. In web development, especially in JavaScript, == and === are comparison operators used to compare values. Here’s the difference: == (Equality Operator): The == operator checks for equality of values after performing type coercion. Type coercion means converting the data type of one operand to match the data type of the other operand before making the comparison. For example, 1 == ‘1’ will return true because…

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Number, String, Undefined, null, Boolean. In JavaScript, there are several data types that are supported. They include: Primitive Data Types: String: Represents textual data, e.g., “hello”. Number: Represents numeric values, e.g., 42. Boolean: Represents true or false values. Undefined: Represents a variable that has been declared but not assigned a value. Null: Represents the intentional absence of any object value. Symbol (added in ECMAScript 6): Represents unique identifiers. Non-primitive Data Types (also known as Reference Data Types): Object: Represents a…

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