sprintf function instance based on JS to implement PHP

This article illustrates the sprintf function based on JS to implement PHP. To share for your reference, the details are as follows:

The function is as follows:

<script type="text/javascript">
function sprintf()
{
  var arg = arguments,
    str = arg[0] || '',
    i, n;
  for (i = 1, n = arg.length; i < n; i++) {
    str = str.replace(/%s/, arg[i]);
  }
  return str;
}
</script>

The first argument is the string containing "%s", and the other arguments are the corresponding variables used to replace "%s".

Such as:

<script type="text/javascript">
var str = " The bed %s Ming Guang, I doubt it %s The frost on; Look up %s Moon, bow your head %s In my hometown. ",
  var1 = " Ming ",
  var2 = " to ",
  var3 = " hope ",
  var4 = " think ";
str = sprintf(str, var1, var2, var3 .  var4);
</script>

I hope this article has been helpful in JavaScript programming.