So, to answer this common question, use the following technique to detect whether the client's browser has cookies enabled:
The above script is actually two techniques rolled into one:
- Firstly, we use the official property for the task,
navigator.cookieEnabled, to help determine whether the browser has cookies enabled. However, we immediately run into a limitation- this property is supported only in IE4+ and NS6+. So, in both cases where the property returns false or does not exist (in other browsers), we set the variable
cookieEnabledto false instead for continued investigation.
- Moving on, it's now time to probe all other browsers for cookie
availability. The age-old "give it a try" technique works nicely. By
setting a dummy value to
document.cookieand immediately probing it to see if the value is retained, we can tell if cookies is enabled on the client's end.
contains a Boolean value indicating the client's cookie support. Nice and