Conditional statements (if/else) and loops (for/while)

Conditional statements are used to execute code based on whether a certain condition is met. The most common conditional statement in JavaScript is the "if/else" statement. The syntax for an "if/else" statement is:

if (condition) { // code to be executed if condition is true } else { // code to be executed if condition is false }

Loops are used to repeat a block of code a specified number of times or until a certain condition is met. The two most common loops in JavaScript are the "for" loop and the "while" loop.

The syntax for a "for" loop is:

for (let i = 0; i < 10; i++) {

  // code to be executed repeatedly

}

The syntax for a "while" loop is:

let i = 0;

while (i < 10) {

  // code to be executed repeatedly

  i++;

}

Conditional statements and loops are fundamental building blocks in programming and are used to solve many complex problems in JavaScript.