简略的ajax记事本

简单的ajax记事本

记事本，同时只能记录一个文件，存为了txt文本文档

注意本例用了一些css和js文件，请在演示页面另存为后查看

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1. <?php??
2. ??
3. $note_name?=?'note.txt';??
4. $uniqueNotePerIP?=?true;??
5. ??
6. if($uniqueNotePerIP){??
7. ??????
8. ????//?Use?the?user's?IP?as?the?name?of?the?note.??
9. ????//?This?is?useful?when?you?have?many?people??
10. ????//?using?the?app?simultaneously.??
11. ??????
12. ????if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])){?
13. ????????$note_name?=?'notes/'.md5($_SERVER['HTTP_X_FORWARDED_FOR']).'.txt';?
14. ????}?
15. ????else{?
16. ????????$note_name?=?'notes/'.md5($_SERVER['REMOTE_ADDR']).'.txt';?
17. ????}?
18. }?
19. ?
20. ?
21. if(isset($_SERVER['HTTP_X_REQUESTED_WITH'])){?
22. ????//?This?is?an?AJAX?request?
23. ?????
24. ????if(isset($_POST['note'])){?
25. ????????//?Write?the?file?to?disk?
26. ????????file_put_contents($note_name,?$_POST['note']);?
27. ????????echo?'{"saved":1}';?
28. ????}?
29. ?????
30. ????exit;?
31. }?
32. ?
33. $note_content?=?'??
34. ??
35. ????????????????Write?your?note?here.??
36. ??
37. ?????????????It?will?be?saved?with?AJAX.';??
38. ??
39. if(?file_exists($note_name)?){??
40. ????$note_content?=?htmlspecialchars(?file_get_contents($note_name)?);??
41. }??
42. ??
43. ?>??

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1. <div?id="pad">??
2. ????????????<h2>Note</h2>??
3. ????????????<textarea?id="note"><?php?echo?$note_content??></textarea>??
4. ????????</div>??

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原文地址:http://www.freejs.net/article_jquerywenzi_68.html