if...else

function testNum(a) {
  let result;
  if (a > 0) {
    result = "positive";
  } else {
    result = "NOT positive";
  }
  return result;
}

console.log(testNum(-5));
// Expected output: "NOT positive"

if (condition)
  statement1

//  else 
if (condition)
  statement1
else
  statement2

if (condition1)
  statement1
else if (condition2)
  statement2
else if (condition3)
  statement3
// 
else
  statementN

if (condition1)
  statement1
else
  if (condition2)
    statement2
  else
    if (condition3)
      statement3
// 

if (condition) {
  statements1
} else {
  statements2
}

function checkValue(a, b) {
  if (a === 1)
    if (b === 2)
      console.log("a  1  b  2");
  else
    console.log("a  1");
}

function checkValue(a, b) {
  if (a === 1)
    if (b === 2)
      console.log("a  1  b  2");
    else
      console.log("a  1");
}

function checkValue(a, b) {
  if (a === 1) {
    if (b === 2) {
      console.log("a  1  b  2");
    }
  } else {
    console.log("a  1");
  }
}

const b = new Boolean(false);
if (b) {
  console.log("b "); // b 
}

if (cipherChar === fromChar) {
  result += toChar;
  x++;
} else {
  result += clearChar;
}

if (x > 50) {
  /*  */
} else if (x > 5) {
  /*  */
} else {
  /*  */
}

if ((x = y)) {
  // 
}

x = y;
if (x) {
  // 
}