Question

does anyone have a script for checking for old browsers. It would have to follow this criteria:

1. Allow firefox 3.6 or up

2. Allow Google Chrome 15 and up

3. Allow Safari 5 or up

4. Block IE and opera

5. Block all other browsers

Answer 1

You can use navigator object for this and in that you can use userAgent property like

 if (navigator.userAgent.indexOf('Firefox') != -1 && parseFloat(navigator.userAgent.substring(navigator.userAgent.indexOf('Firefox') + 8)) >= 3.6){//Firefox
 //Allow
 }else if (navigator.userAgent.indexOf('Chrome') != -1 && parseFloat(navigator.userAgent.substring(navigator.userAgent.indexOf('Chrome') + 7).split(' ')[0]) >= 15){//Chrome
 //Allow
 }else if(navigator.userAgent.indexOf('Safari') != -1 && navigator.userAgent.indexOf('Version') != -1 && parseFloat(navigator.userAgent.substring(navigator.userAgent.indexOf('Version') + 8).split(' ')[0]) >= 5){//Safari
 //Allow
 }else{
 // Block
 }