forEach loop in JavaScript

Conditional flow in JavaScript allows you to control the execution of code based on certain conditions. It involves using conditional statements, such as " if" statements, "else" statements, and "else if" statements, to evaluate expressions and determine which block of code to execute.

They are generally of three types:

1. if statements
2. else statements
3. else if statements

The most basic conditional statement in JavaScript is the "if" statement.

It has the following syntax:

if (condition)
{
    // Code block to execute if the condition is true
}

Here, the "condition" is an expression that evaluates to either true or false. If the condition is true, the code block within the curly braces will be executed. If the condition is false, the code block will be skipped.

You can also include an "else" statement after the "if" statement to specify what code block should be executed if the condition is false.

The syntax of else statement is:

if (condition)
{
    // Code block to execute if the condition is true
}
else
{
    // Code block to execute if the condition is false
}

The code block within the "else" statement will only be executed if the condition in the "if" statement is false.

In addition to the "if" and "else" statements, you can use the "else if" statement to handle multiple conditions. This allows you to check for multiple possibilities and execute different code blocks accordingly.

The syntax of else if is:

if (condition1)
{
    // Code block to execute if condition1 is true
}
else if (condition2)
{
    // Code block to execute if condition2 is true
}
else
{
    // Code block to execute if all conditions are false
}

In this example, if condition1 is true, the code block within the first "if" statement will be executed. If condition1 is false and condition2 is true, the code block within the "else if" statement will be executed. If both conditions are false, the code block within the "else" statement will be executed.

JavaScript also provideslogical operators , such as "&&" (AND), "||" (OR), and "!" (NOT), which can be used to combine multiple conditions. Theseoperatorsallow you to create more complex conditions for your conditional statements.

Another useful feature in JavaScript is the " switch" statement, which provides an alternative way to handle multiple conditions. It allows you to specify different code blocks to execute based on the value of an expression. The syntax of switch statement is:

switch (expression)
{
    case value1:
        // Code block to execute if expression matches value1
        break;
    case value2:
        // Code block to execute if expression matches value2
        break;
    default:
        // Code block to execute if expression doesn't match any values
}

Here, the expression is evaluated, and the corresponding code block will be executed if it matches the value specified in the "case" statement. The "break" statement is used to exit the switch statement once a code block has been executed.

Conditional flow is an essential concept in JavaScript programming as it allows you to make decisions and control the flow of your code based on specific conditions. By using conditional statements like "if," "else if," and "else," along with logical operators and the "switch" statement, you can create dynamic and responsive programs that perform different actions based on various conditions.