{"id":152,"date":"2009-01-07T16:06:26","date_gmt":"2009-01-07T08:06:26","guid":{"rendered":"http:\/\/tmp.xujiwei.com\/blog\/?p=152"},"modified":"2010-01-29T13:36:28","modified_gmt":"2010-01-29T05:36:28","slug":"yui-study-notes-1","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2009\/01\/yui-study-notes-1\/","title":{"rendered":"YUI\u5b66\u4e60\u7b14\u8bb0\uff081\uff09"},"content":{"rendered":"
\n

YUI\u5b66\u4e60\u7b14\u8bb0\uff081\uff09<\/strong><\/p>\n

by\u00a0xujiwei\u00a0(http:\/\/www.xujiwei.com\/<\/a>)<\/p>\n

\u4eca\u5929\u5f00\u59cb\u5b66\u4e60\u00a0YUI<\/a>\uff0c\u52a0\u5f3a\u4e00\u4e0b\u5bf9\u00a0JavaScript\u00a0\u7684\u7406\u89e3\u3002<\/p>\n

1.\u00a0\u547d\u540d\u7a7a\u95f4\u00a0YAHOO.namespace\uff08yahoo.js\uff09<\/strong><\/p>\n

YUI\u00a0\u4e2d\u4f7f\u7528\u4e86\u547d\u540d\u7a7a\u95f4\u7684\u6982\u5ff5\uff0c\u5728\u00a0JS\u00a0\u4e2d\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u662f\u4e3a\u4e86\u6a21\u5757\u4ee5\u53ca\u4ee3\u7801\u7ec4\u7ec7\u6e05\u6670\u7684\u9700\u8981\uff0c\u901a\u8fc7\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u53ef\u4ee5\u5c06\u529f\u80fd\u76f8\u4f3c\u6216\u540c\u4e00\u6a21\u5757\u4e2d\u7684\u51fd\u6570\u3001\u53d8\u91cf\u7b49\u653e\u5230\u540c\u4e00\u4e2a\u547d\u540d\u7a7a\u95f4\u4e0b\u3002<\/p>\n

\u5176\u5b9e\u00a0JS\u00a0\u4e2d\u7684\u547d\u540d\u7a7a\u95f4\u5c31\u662f\u4e00\u4e2a\u5d4c\u5957\u7684\u5bf9\u8c61\u800c\u5df2\uff0c\u5373\u5b50\u547d\u540d\u7a7a\u95f4\u76f8\u5f53\u4e8e\u7236\u547d\u540d\u7a7a\u95f4\u4e2d\u7684\u4e00\u4e2a\u5c5e\u6027\uff0c\u5b83\u672c\u8eab\u4e5f\u662f\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8fd9\u6837\u5b50\u547d\u540d\u7a7a\u95f4\u4e5f\u53ef\u4ee5\u6709\u81ea\u5df1\u7684\u5b50\u547d\u540d\u7a7a\u95f4\u3002<\/p>\n

\u5728\u00a0YUI\u00a0\u4e2d\uff0c\u547d\u540d\u7a7a\u95f4\u7684\u683c\u5f0f\u4e0e\u00a0C#\u00a0\u4e2d\u7c7b\u4f3c\uff0c\u662f\u4ee5\u70b9\u53f7\u5206\u9694\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528\u00a0YAHOO\u00a0\u5bf9\u8c61\u7684\u9759\u6001\u65b9\u6cd5\u00a0namespace\u00a0\u6765\u521b\u5efa\u547d\u540d\u7a7a\u95f4\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ee5\u00a0namespace\u00a0\u65b9\u6cd5\u521b\u5efa\u547d\u540d\u7a7a\u95f4\u65f6\uff0c\u6240\u6709\u7684\u5bf9\u8c61\u90fd\u662f\u9644\u52a0\u5728\u00a0YAHOO\u00a0\u8fd9\u4e2a\u5bf9\u8c61\u4e0a\u7684\uff0c\u5982\u679c\u8c03\u7528\u00a0namespace\u00a0\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u201ccom.xujiwei.ajax\u201d\u8fd9\u6837\u7684\u547d\u540d\u7a7a\u95f4\uff0c\u5176\u4e2d\u00a0ajax\u00a0\u7684\u5b8c\u6574\u8def\u5f84\u5c06\u662f\u00a0YAHOO.com.xujiwei.ajax\uff0c\u800c\u4e0d\u662f\u00a0com.xujiwei.ajax\uff0c\u4e5f\u5c31\u662f\u8bf4\u00a0namespace\u00a0\u4e0d\u4f1a\u4ea7\u751f\u65b0\u7684\u9876\u5c42\u5bf9\u8c61\uff0c\u4e00\u5207\u4ee5\u00a0YAHOO\u00a0\u5bf9\u8c61\u4e3a\u57fa\u7840\u3002<\/p>\n

namespace\u00a0\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u6216\u591a\u4e2a\u5b57\u7b26\u4e32\u6765\u751f\u6210\u547d\u540d\u7a7a\u95f4\uff0c\u4f46\u662f\u5b83\u53ea\u8fd4\u56de\u6700\u540e\u4e00\u4e2a\u53c2\u6570\u6240\u4ee3\u8868\u7684\u547d\u540d\u7a7a\u95f4\u7684\u6700\u540e\u4e00\u4e2a\u57df\u7684\u5bf9\u8c61\uff0c\u4f8b\u5982\u4f7f\u7528\u00a0namespace(\"com.xujiwei.js\",\u00a0\"com.xujiwei.ajax\")\u00a0\u65f6\u5b83\u7684\u8fd4\u56de\u503c\u662f\u4ee3\u8868\u00a0js\u00a0\u8fd9\u4e2a\u6a21\u5757\u7684\u7684\u5bf9\u8c61\uff1a<\/p>\n

\n
YAHOO.namespace(\"com.xujiwei.js\",\u00a0\"com.xujiwei.ajax\").get\u00a0=\u00a0function()\u00a0{
\nalert(\"get\u00a0method\u00a0of\u00a0com.xujiwei.ajax\");
\n}
\nYAHOO.com.xujiwei.ajax.get();<\/span><\/p>\n<\/div>\n<\/blockquote>\n

2.\u00a0YAHOO.lang.extend\uff08yahoo.js\uff09<\/strong><\/p>\n

YAHOO.lang.extend\u00a0\u8d1f\u8d23\u6269\u5c55\u4e00\u4e2a\u73b0\u5728\u7684\u51fd\u6570\u5bf9\u8c61\uff0c\u76f8\u5f53\u4e8e\u9762\u5411\u5bf9\u8c61\u4e2d\u7684\u7ee7\u627f\uff0c\u5e76\u4e14\u53ef\u4ee5\u9644\u52a0\u4e00\u4e2a\u53c2\u6570\u91cd\u5199\u7ee7\u627f\u7684\u65b9\u6cd5\uff0c\u5b83\u7684\u51fd\u6570\u58f0\u660e\u662f\uff1a<\/p>\n

extend:\u00a0function(subc,\u00a0superc,\u00a0overrides)<\/em><\/p>\n

\u5176\u4e2d\u00a0subc\u00a0\u4e3a\u8981\u6269\u5c55\u7684\u51fd\u6570\u5bf9\u8c61\uff0csuperc\u00a0\u662f\u8981\u7ee7\u7eed\u7684\u51fd\u6570\u5bf9\u8c61\uff0coverrides\u00a0\u4e2d\u5305\u542b\u7740\u8981\u91cd\u5199\u7236\u7c7b\u7684\u65b9\u6cd5\u3002<\/p>\n

YAHOO.lang.extend\u00a0\u662f\u901a\u8fc7\u539f\u578b\u94fe\u7684\u65b9\u5f0f\u6765\u6269\u5c55\u5bf9\u8c61\uff0c\u5373\u521b\u5efa\u4e00\u4e2a\u7236\u7c7b\u7684\u5b9e\u4f8b\u505a\u4e3a\u5b50\u7c7b\u7684\u539f\u578b\u5bf9\u8c61\uff0c\u5728\u00a0extend\u00a0\u65b9\u6cd5\u4e2d\uff0c\u9996\u5148\u6784\u9020\u4e86\u4e00\u4e2a\u7a7a\u51fd\u6570\uff0c\u5c06\u7a7a\u51fd\u6570\u7684\u00a0prototype\u00a0\u6307\u5411\u7236\u7c7b\u7684\u00a0prototype\uff0c\u4ee5\u514d\u5728\u7236\u7c7b\u7684\u6784\u9020\u51fd\u6570\u9700\u8981\u53c2\u6570\u65f6\u521b\u5efa\u7236\u7c7b\u5b9e\u4f8b\u65f6\u4f1a\u51fa\u9519\uff0c\u7136\u540e\u521b\u5efa\u8fd9\u4e2a\u7a7a\u51fd\u6570\u7684\u5b9e\u4f8b\u8d4b\u503c\u7ed9\u5b50\u7c7b\u7684\u00a0prototype\u00a0\u5bf9\u8c61\uff0c\u5e76\u4e14\u7ed9\u5b50\u7c7b\u6dfb\u52a0\u4e00\u4e2a\u00a0superclass\u00a0\u5c5e\u6027\u6307\u5b9a\u5b83\u7684\u7236\u7c7b\uff0c\u53e6\u5916\u8fd8\u6307\u5b9a\u4e86\u5b50\u7c7b\u00a0prototype\u00a0\u7684\u00a0constructor\u00a0\u5c5e\u6027\u4e3a\u5b50\u7c7b\u6784\u9020\u51fd\u6570\uff0c\u4ee5\u514d\u521b\u5efa\u5b50\u7c7b\u5b9e\u4f8b\u65f6\u4f1a\u4e22\u5931\u00a0constructor\u00a0\u5c5e\u6027\uff0c\u8fd9\u4e2a\u95ee\u9898\u6211\u5728\u300a\u614e\u7528\u00a0somefunction.prototype\u300b<\/a>\u6709\u63d0\u5230\u3002<\/p>\n

\n
\n

var\u00a0F\u00a0=\u00a0function()\u00a0{};<\/span><\/em>
\n<\/span>F.prototype\u00a0=\u00a0superc.prototype;<\/span><\/em>
\n<\/span>subc.prototype\u00a0=\u00a0new\u00a0F();<\/span><\/em>
\n<\/span>subc.prototype.constructor\u00a0=\u00a0subc;<\/span><\/em>
\n<\/span>subc.superclass\u00a0=\u00a0superc.prototype;<\/span><\/em><\/p>\n<\/div>\n<\/blockquote>\n

\u63a5\u7740\u5904\u7406\u7684\u662f\u8981\u91cd\u5199\u7684\u51fd\u6570\uff0c\u9996\u5148\u904d\u5386\u00a0overrides\u00a0\u53c2\u6570\uff0c\u5e76\u4e14\u4f7f\u7528\u00a0hasOwnProperty\u00a0\u65b9\u6cd5\u5224\u65ad\u5c5e\u6027\u662f\u5426\u4e3a\u00a0overrides\u00a0\u81ea\u8eab\u7684\u5c5e\u6027\uff0c\u800c\u4e0d\u662f\u4ece\u00a0Object\u00a0\u5bf9\u8c61\u7684\u00a0prototype\u00a0\u7ee7\u627f\u8fc7\u6765\u7684\uff0c\u5982\u679c\u662f\u00a0overrides\u00a0\u81ea\u8eab\u7684\u5c5e\u6027\uff0c\u90a3\u4e48\u5c31\u8986\u76d6\u5b50\u7c7b\u00a0prototype\u00a0\u7684\u76f8\u540c\u6210\u5458\u3002<\/p>\n

\u5728\u5904\u7406\u00a0overrides\u00a0\u7684\u6700\u540e\uff0c\u8fd8\u4fee\u590d\u4e86\u00a0IE\u00a0\u4e2d\u4e0d\u679a\u4e3e\u4e0e\u5185\u90e8\u51fd\u6570\u540c\u540d\u7684\u51fd\u6570\u7684\u00a0bug\uff0c\u5373\u4f8b\u5982\u00a0overrides\u00a0\u4e2d\u5305\u542b\u4e86\u00a0toString\u00a0\u6216\u00a0valueOf\u00a0\u7684\u5b9a\u4e49\uff0c\u4f46\u662f\u8fd9\u4e24\u4e2a\u51fd\u6570\u4e5f\u662f\u00a0Object\u00a0\u5bf9\u8c61\u6240\u5177\u6709\u7684\uff0c\u5728\u00a0IE\u00a0\u4e2d\u4f7f\u7528\u00a0for(p\u00a0in\u00a0overrides)\u00a0\u5c31\u4e0d\u4f1a\u5f97\u5230\u8fd9\u4e24\u4e2a\u51fd\u6570\uff0c\u56e0\u6b64\u9700\u8981\u4fee\u590d\uff0c\u8fd9\u662f\u00a0YAHOO.lang\u00a0\u4e2d\u00a0_IEEnumFix\u00a0\u51fd\u6570\u6240\u505a\u7684\u5de5\u4f5c\u3002<\/p>\n

\n
if\u00a0(overrides)\u00a0{
\nfor\u00a0(var\u00a0i\u00a0in\u00a0overrides)\u00a0{
\nif\u00a0(L.hasOwnProperty(overrides,\u00a0i))\u00a0{
\nsubc.prototype[\u00a0i\u00a0]=overrides[\u00a0i\u00a0];
\n}
\n}
\nL._IEEnumFix(subc.prototype,\u00a0overrides);
\n}<\/span><\/p>\n<\/div>\n<\/blockquote>\n

_IEEnumFix\u00a0\u53ea\u662f\u7b80\u5355\u7684\u5224\u65ad\u5f53\u524d\u6d4f\u89c8\u5668\u662f\u5426\u4e3a\u00a0IE\uff0c\u5982\u679c\u4e3a\u00a0IE\u00a0\u5219\u4ece\u4e00\u4e2a\u5df2\u7ecf\u5b9a\u4e49\u7684\u5217\u8868\u4e2d\u83b7\u53d6\u5728\u00a0IE\u00a0\u4e2d\u679a\u4e3e\u4e0d\u5230\u7684\u51fd\u6570\u540d\u5217\u8868\uff0c\u9010\u4e00\u5224\u65ad\u662f\u5426\u4e3a\u6e90\u5bf9\u8c61\u81ea\u8eab\u7684\u5c5e\u6027\u5e76\u4e14\u4e0e\u00a0Object\u00a0\u539f\u578b\u4e2d\u7684\u540c\u540d\u51fd\u6570\u4e0d\u4e00\u6837\uff0c\u5982\u679c\u662f\u5219\u6dfb\u52a0\u5230\u76ee\u6807\u5bf9\u8c61\u3002\u5982\u679c\u6d4f\u89c8\u5668\u4e0d\u662f\u00a0IE\u00a0\u5219\u00a0_IEEnumFix\u00a0\u76f4\u63a5\u5c31\u662f\u4e00\u4e2a\u7a7a\u51fd\u6570\uff0c\u76f4\u63a5\u4e0d\u5904\u7406\u3002<\/p>\n

\n
_IEEnumFix:\u00a0(YAHOO.env.ua.ie)\u00a0?\u00a0function(r,\u00a0s)\u00a0{
\nfor\u00a0(var\u00a0i=0;i<ADD.length;i=i+1)\u00a0{
\nvar\u00a0fname=ADD[\u00a0i\u00a0],f=s[fname];
\nif\u00a0(L.isFunction(f)\u00a0&&\u00a0f!=Object.prototype[fname])\u00a0{
\nr[fname]=f;
\n}
\n}
\n}\u00a0:\u00a0function(){},<\/span><\/p>\n<\/div>\n<\/blockquote>\n

3.\u00a0YAHOO.lang.augmentObject\uff08yahoo.js\uff09<\/strong><\/p>\n

augmentObject\u00a0\u65b9\u6cd5\u7528\u6765\u5f15\u5165\u76ee\u6807\u5bf9\u8c61\u7684\u5c5e\u6027\uff0c\u5e76\u4e14\u5904\u7406\u91cd\u5199\uff0c\u901a\u5e38\u7528\u4e8e\u5408\u5e76\u914d\u7f6e\u5bf9\u8c61\u4e0e\u9ed8\u8ba4\u914d\u7f6e\u5bf9\u8c61\u3002<\/p>\n

augmentObject\u00a0\u6709\u4e09\u79cd\u8c03\u7528\u65b9\u6cd5\uff0c\u5206\u522b\u662f\uff1a<\/p>\n

augmentObject(result,\u00a0source)<\/em>\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u7528\u4e9b\u65b9\u6cd5\uff0c\u4ece\u00a0source\u00a0\u5f15\u5165\u00a0result\u00a0\u4e2d\u6ca1\u6709\u7684\u5c5e\u6027\uff1b<\/p>\n

augmentObject(result,\u00a0source,\u00a0override)<\/em>\uff0coverride\u00a0\u8bbe\u7f6e\u662f\u5426\u8986\u76d6\uff0c\u5982\u679c\u662f\u00a0true\u00a0\u7684\u8bdd\uff0c\u90a3\u4e48\u00a0source\u00a0\u4e2d\u6240\u6709\u5c5e\u6027\u4f1a\u8986\u76d6\u00a0result\u00a0\u4e2d\u5df2\u6709\u7684\u5c5e\u6027\uff1b<\/p>\n

augmentObject(result,\u00a0source,\u00a0ovrride_name,\u00a0...)<\/em>\uff0c\u6307\u5b9a\u8981\u8986\u76d6\u5c5e\u6027\u7684\u5217\u8868\uff0csource\u00a0\u53c2\u6570\u540e\u4e3a\u8981\u8986\u76d6\u5c5e\u6027\u540d\u79f0\u7684\u5217\u8868\uff0c\u4f8b\u5982\u8986\u76d6\u00a0result\u00a0\u4e2d\u7684\u00a0toString\u00a0\u548c\u00a0valueOf\uff0c\u90a3\u4e48\u53ef\u4ee5\u8c03\u7528\u00a0augmentObject(result,\u00a0source,\u00a0\"toString\",\u00a0\"valueOf\"\uff09\u6765\u5b9e\u73b0\u3002<\/p>\n

\u5408\u5e76\u5bf9\u8c61\u7684\u6700\u540e\u540c\u6837\u8c03\u7528\u4e86\u00a0_IEEnumFix\u00a0\u65b9\u6cd5\u6765\u4fee\u6b63\u00a0IE\u00a0\u4e2d\u4e0d\u679a\u4e3e\u4e0e\u5185\u90e8\u5c5e\u6027\u540c\u540d\u5c5e\u6027\u7684\u00a0bug\u3002<\/p>\n

augmentProto<\/em> \u4e0e\u00a0augmentObject\u00a0\u529f\u80fd\u57fa\u672c\u76f8\u540c\uff0c\u53ea\u4e0d\u8fc7\u540e\u8005\u662f\u5904\u7406\u5bf9\u8c61\uff0c\u800c\u524d\u8005\u662f\u5904\u7406\u51fd\u6570\u7684\u00a0prototype\uff0c\u5b83\u662f\u901a\u8fc7\u4f7f\u7528\u4e24\u4e2a\u53c2\u6570\u7684\u00a0prototype\u00a0\u6765\u6784\u9020\u4e00\u4e2a\u53c2\u6570\u5217\u8868\uff0c\u4f20\u9012\u7ed9\u00a0augmentObject\u00a0\u5bf9\u8c61\u6765\u5b9e\u73b0\u00a0augmentProto\u00a0\u7684\u529f\u80fd\u3002<\/p>\n

\n
var\u00a0a=[r.prototype,s.prototype];
\nfor\u00a0(var\u00a0i=2;i<arguments.length;i=i+1)\u00a0{
\na.push(arguments[\u00a0i\u00a0]);
\n}
\nL.augmentObject.apply(this,\u00a0a);<\/span><\/p>\n<\/div>\n<\/blockquote>\n

\u56e0\u4e3a\u00a0augmentProto\u00a0\u662f\u8c03\u7528\u00a0augmentObject\u00a0\u6765\u5b9e\u73b0\u7684\uff0c\u56e0\u6b64\u5b83\u7684\u8c03\u7528\u683c\u5f0f\u4e5f\u662f\u00a0augmentObject\u00a0\u4e00\u6837\uff0c\u5177\u4f53\u53ef\u4ee5\u770b\u770b\u4e0a\u9762\u00a0augmentObject\u00a0\u7684\u4e09\u79cd\u8c03\u7528\u65b9\u6cd5\u3002<\/p>\n

\u53e6\u5916\uff0cYAHOO.lang.merge<\/em> \u65b9\u6cd5\u4e5f\u662f\u901a\u8fc7\u8c03\u7528\u00a0augmentObject\u00a0\u65b9\u6cd5\u6765\u5b9e\u73b0\u5bf9\u8c61\u7684\u5408\u5e76\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

YUI\u5b66\u4e60\u7b14\u8bb0\uff081\uff09 by\u00a0xujiwei\u00a0(http:\/\/www.xujiwe …<\/p>\n

\u7ee7\u7eed\u9605\u8bfb »<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11],"tags":[28,103],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/152"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=152"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/152\/revisions"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}