How to detect if i can use jquery on a browser or not

Question

I currently using jquery in my website but when i try to open this website on ie 5.5 i get the error "$" is undefined so i am searching for a solution to detect if the browser support jquery or not before calling any jquery code

Answer 1

I think you might have answered your own question. Check if $ is undefined. Thoguh as mentioned in the comments, IE 5.5 is not supported.

Edit

In case you needed the code to check if the alias for jQuery is undefined:

typeof $ == 'undefined'

Answer 2

if (typeof jQuery == 'undefined') {alert('no jquery');}