[Solved] Write a JavaScript conditional statement to find the sign of product of three numbers. Display an alert box with the specified sign

by


  1. Input elements have a value not, innerHTML
  2. Even if you would have corrected that, you will not have values, since you did not assign them to any variable
  3. For number only input use the number type, this will prevent someone from entering not numeral characters (in all modern browsers)
document.getElementById('check-value').addEventListener('click', (e) => {
  const x = document.getElementById('x').value;
  const y = document.getElementById('y').value;
  const z = document.getElementById('z').value;
  if (x + y + z >= 0) {
    alert("The sign is +");
  } else if (x < 0 && y < 0 && z < 0) {
    alert("The sign is +");
  } else if (x > 0 && y < 0 && z < 0) {
    alert("The sign is +");
  } else if (x < 0 && y > 0 && z < 0) {
    alert("The sign is +");
  } else {
    alert("The sign is -");
  }
});
Please enter numbers that aren't 0.<br>
<input id="x" type="number" name="" value="">
<input id="y" type="number" name="" value="">
<input id="z" type="number" name="" value="">
<button type="button" id="check-value" name="button">OK</button>

8

solved Write a JavaScript conditional statement to find the sign of product of three numbers. Display an alert box with the specified sign