How to use If Else condition in Javascript

1. if statement – use this statement to execute some code only if condition is true then else condition is excluded.
2. if…else statement – use this statement to execute some code when if condition is wrong on this condition else code run.

Code:-

<script type="text/javascript">
var d = new Date();
var time = d.getHours();
if (time < 10)
  {
  document.write("This is a sunny morning!");
  }
else
  {
  document.write("This is a good day for you!");
  }
< /script>