1. <script type="text/javascript">
2. // 將字符串用txt的格式報存 ie中會出現中文亂碼的問題
3. var saveAs = saveAs || (function(view) {
4. "use strict";
5. // IE <10 is explicitly unsupported
6. if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
7. return;
8. }
9. var
10. doc = view.document
11. // only get URL when necessary in case Blob.js hasn‘t overridden it yet
12. , get_URL = function() {
13. return view.URL || view.webkitURL || view;
14. }
15. , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
16. , can_use_save_link = "download" in save_link
17. , click = function(node) {
18. var event = new MouseEvent("click");
19. node.dispatchEvent(event);
20. }
21. , is_safari = /constructor/i.test(view.HTMLElement) || view.safari
22. , is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
23. , throw_outside = function(ex) {
24. (view.setImmediate || view.setTimeout)(function() {
25. throw ex;
26. }, 0);
27. }
28. , force_saveable_type = "application/octet-stream"
29. // the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
30. , arbitrary_revoke_timeout = 1000 * 40 // in ms
31. , revoke = function(file) {
32. var revoker = function() {
33. if (typeof file === "string") { // file is an object URL
34. get_URL().revokeObjectURL(file);
35. } else { // file is a File
36. file.remove();
37. }
38. };
39. setTimeout(revoker, arbitrary_revoke_timeout);
40. }
41. , dispatch = function(filesaver, event_types, event) {
42. event_types = [].concat(event_types);
43. var i = event_types.length;
44. while (i--) {
45. var listener = filesaver["on" + event_types[i]];
46. if (typeof listener === "function") {
47. try {
48. listener.call(filesaver, event || filesaver);
49. } catch (ex) {
50. throw_outside(ex);
51. }
52. }
53. }
54. }
55. , auto_bom = function(blob) {
56. // prepend BOM for UTF-8 XML and text/* types (including HTML)
57. // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
58. if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
59. return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
60. }
61. return blob;
62. }
63. , FileSaver = function(blob, name, no_auto_bom) {
64. if (!no_auto_bom) {
65. blob = auto_bom(blob);
66. }
67. // First try a.download, then web filesystem, then object URLs
68. var
69. filesaver = this
70. , type = blob.type
71. , force = type === force_saveable_type
72. , object_url
73. , dispatch_all = function() {
74. dispatch(filesaver, "writestart progress write writeend".split(" "));
75. }
76. // on any filesys errors revert to saving with object URLs
77. , fs_error = function() {
78. if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
79. // Safari doesn‘t allow downloading of blob urls
80. var reader = new FileReader();
81. reader.onloadend = function() {
82. var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, ‘data:attachment/file;‘);
83. var popup = view.open(url, ‘_blank‘);
84. if(!popup) view.location.href = url;
85. url=undefined; // release reference before dispatching
86. filesaver.readyState = filesaver.DONE;
87. dispatch_all();
88. };
89. reader.readAsDataURL(blob);
90. filesaver.readyState = filesaver.INIT;
91. return;
92. }
93. // don‘t create more object URLs than needed
94. if (!object_url) {
95. object_url = get_URL().createObjectURL(blob);
96. }
97. if (force) {
98. view.location.href = object_url;
99. } else {
100. var opened = view.open(object_url, "_blank");
101. if (!opened) {
102. // Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
103. view.location.href = object_url;
104. }
105. }
106. filesaver.readyState = filesaver.DONE;
107. dispatch_all();
108. revoke(object_url);
109. }
110. ;
111. filesaver.readyState = filesaver.INIT;
113. if (can_use_save_link) {
114. object_url = get_URL().createObjectURL(blob);
115. setTimeout(function() {
116. save_link.href = object_url;
117. save_link.download = name;
118. click(save_link);
119. dispatch_all();
120. revoke(object_url);
121. filesaver.readyState = filesaver.DONE;
122. });
123. return;
124. }
126. fs_error();
127. }
128. , FS_proto = FileSaver.prototype
129. , saveAs = function(blob, name, no_auto_bom) {
130. return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
131. }
132. ;
133. // IE 10+ (native saveAs)
134. if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
135. return function(blob, name, no_auto_bom) {
136. name = name || blob.name || "download";
138. if (!no_auto_bom) {
139. blob = auto_bom(blob);
140. }
141. return navigator.msSaveOrOpenBlob(blob, name);
142. };
143. }
145. FS_proto.abort = function(){};
146. FS_proto.readyState = FS_proto.INIT = 0;
147. FS_proto.WRITING = 1;
148. FS_proto.DONE = 2;
150. FS_proto.error =
151. FS_proto.onwritestart =
152. FS_proto.onprogress =
153. FS_proto.onwrite =
154. FS_proto.onabort =
155. FS_proto.onerror =
156. FS_proto.onwriteend =
157. null;
159. return saveAs;
160. }(
161. typeof self !== "undefined" && self
162. || typeof window !== "undefined" && window
163. || this.content
164. ));
165. // `self` is undefined in Firefox for Android content script context
166. // while `this` is nsIContentFrameMessageManager
167. // with an attribute `content` that corresponds to the window
169. if (typeof module !== "undefined" && module.exports) {
170. module.exports.saveAs = saveAs;
171. } else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) {
172. define("FileSaver.js", function() {
173. return saveAs;
174. });
175. }
177. // 引入上邊的js後，就可以調用生成文本的方法 另外ie下會有中文亂碼的問題
178. var blob = new Blob(["Hello, world!\t\n我是milo，你好啊"], {type: "text/plain;charset=utf-8"});
179. saveAs(blob, "hello world.txt");
180. </script>

http://blog.csdn.net/baidu_34036884/article/details/68070550

利用Javascript生成txt文本文件