When an element is being dragged and dropped in HTML, the ondragover attribute fires.ExampleYou can try to run the following code to implement the ondragover attribute −                    .drag {             float: left;     ... Read More

Use the defer attribute to execute the script when the page has finished parsing in HTML.Firstly, add a js file.Let us give it a name,  new.js, function sayHello() {    alert("Hello World") }ExampleLet’s add the HTML code now and execute the above script −             ... Read More

The Local Storage is designed for storage that spans multiple windows and lasts beyond the current session. In particular, Web applications may wish to store megabytes of user data, such as entire user-authored documents or a user's mailbox, on the client side for performance reasons.HTML5 localStorage saves string data in ... Read More

Variables, methods, and constructors, which are declared protected in a superclass can be accessed only by the subclasses in other package or any class within the package of the protected members' class.The protected access modifier cannot be applied to class and interfaces. Methods, fields can be declared protected, however methods ... Read More

It is because inserting an empty string means that we are inserting some value and not NULL. The empty string apparently maps to zero as an integer. In other words, we can say that by inserting empty string we are providing a value to MySQL that has integer representation as ... Read More

Let us look at an example where you MIGHT be able to access a local variable's memory outside its scope.Example#include int* foo() {    int x = 3;    return &x; } int main() {    int* address = foo();    cout

The bitwise AND operator (&) compares each bit of first operand to the corresponding bit of second operand. If both bits are 1, the corresponding result bit is set to 1. Otherwise, the corresponding result bit is set to 0. Both operands to the bitwise inclusive AND operator must be ... Read More

There is only one difference between the relational operator == and std::string::compare(). That is the return value. Internally, string::operator==() is using string::compare()Relational operator(==) returns a boolean just signifying whether the 2 strings are equal or not while compare returns an integer that signifies how the strings relate to each other.To ... Read More

C++ provides two pointer operators, which are Address of Operator (&) and Indirection Operator (*). A pointer is a variable that contains the address of another variable or you can say that a variable that contains the address of another variable is said to "point to" the other variable. A ... Read More

All number types in C++ can either have a sign or not. For example, you can declare an int to only represent positive integers. Unless otherwise specified, all integer data types are signed data types, i.e. they have values which can be positive or negative. The unsigned keyword can be ... Read More