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Simple JavaScript Cookie Functions

/ Published in: JavaScript
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  1. /* Cookie Functions */
  2. function createCookie(name,value,days) {
  3. 	if (days) {
  4. 		var date = new Date();
  5. 		date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
  6. 		var expires = "; expires=" + date.toGMTString();
  7. 	}
  8. 	else {
  9. 		var expires = "";
  10. 	}
  11. 	document.cookie = name+"="+value+expires+"; path=/";
  12. }
  13.  
  14. function readCookie(name) {
  15. 	var nameEQ = name + "=";
  16. 	var ca = document.cookie.split(';');
  17. 	for(var i=0;i < ca.length;i++) {
  18. 		var c = ca[i];
  19. 		while (c.charAt(0)===' '){ c = c.substring(1,c.length); }
  20. 		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  21. 	}
  22. 	return null;
  23. }
  24.  
  25. function eraseCookie(name) {
  26. 	createCookie(name,"",-1);
  27. }

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