Javascript method - sinsunsan/archiref_wiki GitHub Wiki

• hasOwnProperty
  Allow to test if an object has a given property

if (data.hasOwnProperty(fieldName)) {
   /* Do something */ 
}

• Optional parameters
  http://www.markhansen.co.nz/javascript-optional-parameters/

timer

Good blog post to understand timer
http://ejohn.org/blog/how-javascript-timers-work/

• setTimeout
  Trigger something after having waited a time defined in millisecond

setTimeout(function() { $('#rue89-register-username').find('input').focus(); }, 10);

after 10 ms, give the focus to input element inside #rue89-register-username element

• setInterval
  Trigger something every xxx time in milsecond