JS vs Python: conditionals

• the if statement is followed by parentheses () containing the condition, and the block of code to be executed is enclosed within curly braces {}.

if (condition1) {
    // Code block
} else if (condition2) {
    // Code block
} else {
    // Code block
}

• the if statement also uses parentheses () for the condition, but the block of code is defined by indentation.

if condition1:
    # Code block
elif condition2:
    # Code block
else:
    # Code block

• JavaScript uses double equals == for loose equality comparison and triple equals === for strict equality comparison. 
• Other operators include != (not equal), > (greater than), < (less than), >= (greater than or equal to), and <= (less than or equal to).

• Python uses double equals == for equality comparison and != for inequality comparison. 
• Other operators include > (greater than), < (less than), >= (greater than or equal to), and <= (less than or equal to).
• Python also supports is and is not for object identity comparison

• JavaScript has several "falsy" values that evaluate to false in conditional statements, such as 
  • false, 
  • 0, 
  • '' (empty string), 
  • null, 
  • undefined, and 
  • NaN. 
• All other values are considered "truthy" and evaluate to true.

• In Python, the following values are considered "falsy" and evaluate to false in conditionals:
  •  False,
  • None,
  • 0,
  • 0.0,
  • '' (empty string),
  • [] (empty list),
  • {} (empty dictionary), and
  • () (empty tuple).
• All other values are considered "truthy" and evaluate to true.

• JavaScript supports the ternary operator ? :, which allows for concise conditional expressions.

var result = condition ? trueValue : falseValue;

ar result = x > 0 ? "positive" : "negative";

• Python also supports the ternary operator if else for conditional expressions.

result = trueValue if condition else falseValue 

result = "positive" if x > 0 else "negative"

switch (expression) {
    case value1:
        // Code block
        break;
    case value2:
        // Code block
        break;
    default:
        // Code block
        break;
}