Sleep

This extension adds command 'sleep' that halts the execution of a test for the specified number of milliseconds.

Code to add to the user-extensions:

user-extensions.js
Selenium.prototype.doSleep = function(locator, paramString) {
  var start = new Date().getTime();
  while (new Date().getTime() < start + parseInt(locator));
};

Example, halts execution for 10 seconds:

sleep 10000  

Note:

This sleep function is a busy-wait and should probably not be used in most cases. Try to use one of the waitFor commands instead whenever possible.

Type: 

User-Extension