Checking for inequality in JavaScript

The operator != checks for inequality. For example, let's check that the variable test is not equal to 0:

javascriptlet test = 1;

if (test != 0) {
  console.log('+++'); // it will work
} else {
  console.log('---');
}

Change the variable value:

javascriptlet test = 0;

if (test != 0) {
  console.log('+++');
} else {
  console.log('---'); // it will work
}