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interface DataOutput{\r\nvoid writeBoolean(boolean value) throwsIOException;\r\nvoid writeByte(int value) throwsIOException;\r\nvoid writeChar(int value) throws IOException;\r\n\u2026..\r\n}\r\n\r\n\u5b83\u5217\u51fa\u4e00\u4e2a\u7c7b\u5e94\u8be5\u5b9e\u73b0\u7684\u4e00\u6279\u65b9\u6cd5\uff0c\u5305\u62ec\u65b9\u6cd5\u7684\u53c2\u6570\u548c\u53ef\u80fd\u4f1a\u629b\u51fa\u7684\u5f02\u5e38\u3002\u6bcf\u4e00\u884c\u90fd\u50cf\u662f\u4e00\u4e2a\u65b9\u6cd5\u58f0\u660e\uff0c\u53ea\u4e0d\u8fc7\u662f\u4ee5\u4e00\u4e2a\u5206\u53f7\u800c\u4e0d\u662f\u4e00\u5bf9\u5927\u62ec\u53f7\u7ed3\u5c3e\u3002\r\n\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\r\npublic class DataOutputStream extends FilterOutputStream implemets DataOutput{\r\npublic final void writeBoolean(boolean value) throwsIOException{\r\nwrite(value?1:0);\r\n}\r\n\u2026.\r\n}\r\n\u8fd9\u4e2a\u7c7b\u58f0\u660e\u5e76\u5177\u4f53\u5b9e\u73b0\u4e86\u63a5\u53e3\u4e2d\u5217\u51fa\u7684\u6bcf\u4e00\u4e2a\u65b9\u6cd5\u3002\u6f0f\u6389\u4efb\u4f55\u4e00\u4e2a\u65b9\u6cd5\u90fd\u4f1a\u5bfc\u81f4\u5728\u7f16\u8bd1\u65f6\u663e\u793a\u9519\u8bef\u3002\r\n\r\nPHP\r\ninterface MyInterface{\r\npublic functioninterfaceMethod($argumentOne, $argumentTow);\r\n}\r\n\r\nclass MyClass implements MyInterface{\r\npublic function interfaceMethod($argumentOne,$argumentTow){\r\nreturn $argumentOne*$argumentTwo;\r\n}\r\n}\r\n\r\nclass BadClass implements MyInterface{\r\n\/\/no method declarations.\r\n}\r\n\u8fd0\u884c\u8fdb\u4f1a\u62a5\u9519..\r\nC#\u8ddfjava\u7c7b\u4f3c\r\n\r\n\u5728javascript\u4e2d\u6a21\u4eff\u63a5\u53e3\r\njavascript\u4e2d\u6a21\u4eff\u63a5\u53e3\u7684\u4e09\u79cd\u65b9\u6cd5\uff1a\u6ce8\u91ca\u6cd5\u3001\u5c5e\u6027\u68c0\u67e5\u6cd5\u548c\u9e2d\u5f0f\u8fa8\u578b\u6cd5\u3002\u6ca1\u6709\u54ea\u79cd\u6280\u672f\u662f\u5b8c\u7f8e\u7684\uff0c\u4f46\u4e09\u8005\u7ed3\u5408\u4f7f\u7528\u57fa\u672c\u4e0a\u53ef\u4ee5\u4ee4\u4eba\u6ee1\u610f\u3002\r\n\u7528\u6ce8\u91ca\u63cf\u8ff0\u63a5\u53e3\r\n\u7528\u6ce8\u91ca\u6a21\u4eff\u63a5\u53e3\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u4f46\u6548\u679c\u5374\u662f\u6700\u5dee\u7684\u3002\u8fd9\u79cd\u65b9\u6cd5\u6a21\u4eff\u5176\u4ed6\u9875\u9762\u5bf9\u8c61\u8bed\u8a00\u4e2d\u7684\u505a\u6cd5\uff0c\u4f7f\u7528\u4e86interface\u548cimplements\u5173\u952e\u5b57\uff0c\u4f46\u628a\u5b83\u4eec\u653e\u5728\u6ce8\u91ca\u4e2d\uff0c\u4ee5\u514d\u5f15\u8d77\u8bed\u6cd5\u9519\u8bef\u3002\u5982\u4e0b\uff1a\r\n\/*\r\ninterface Composite{\r\nfunction add(child);\r\nfunction remove(child);\r\nfunction getChild(index);\r\n}\r\n\r\ninterface FormItem{\r\nfunction save();\r\n}\r\n*\/\r\nvar CompositeForm= function(id,method,action){\r\n\/\/implements Composite,FormItem\r\n}\r\nCompositeForm.prototype.add=function(child){\r\n\u2026\r\n}\r\nCompositeForm.prototype.remove=function(child){\r\n\u2026\r\n}\r\nCompositeForm.prototype.getChild=function(indx){\r\n\u2026\r\n}\r\n\r\n\/\/Implement theFormItem interface.\r\nCompositeForm.prototype.save=function(){\r\n\u2026\r\n}\r\n\r\n\u8fd9\u79cd\u6a21\u4eff\u5e76\u4e0d\u662f\u5f88\u597d\u3002\u5b83\u6ca1\u6709\u4e3a\u786e\u4fddCompositeForm\u771f\u6b63\u5b9e\u73b0\u4e86\u6b63\u786e\u7684\u65b9\u6cd5\u96c6\u800c\u8fdb\u884c\u68c0\u67e5\uff0c\u4e5f\u4e0d\u4f1a\u629b\u51fa\u9519\u8bef\u4ee5\u544a\u77e5\u7a0b\u5e8f\u5458\u7a0b\u5e8f\u4e2d\u7684\u95ee\u9898\u3002\u8bf4\u5230\u5e95\u5b83\u4e3b\u8981\u8fd8\u662f\u5c5e\u4e8e\u7a0b\u5e8f\u6587\u6863\u8303\u7574\u3002\u5728\u8fd9\u79cd\u505a\u6cd5\u4e2d\uff0c\u5bf9\u63a5\u53e3\u7ea6\u5b9a\u7684\u9075\u5b88\u5b8c\u5168\u4f9d\u9760\u81ea\u89c9\u3002\r\n\u5c3d\u7ba1\u5982\u6b64\uff0c\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u6709\u5176\u4f18\u70b9\u3002\u5b83\u6613\u4e8e\u5b9e\u73b0\uff0c\u4e0d\u9700\u8981\u989d\u5916\u7684\u7c7b\u6216\u51fd\u6570\u3002\u5b83\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\uff0c\u56e0\u4e3a\u73b0\u4e30\u90a3\u4e9b\u7c7b\u5b9e\u73b0\u7684\u7684\u63a5\u53e3\u90fd\u6709\u8bf4\u660e\uff0c\u7a0b\u5e8f\u5458\u53ef\u4ee5\u628a\u5b83\u4eec\u4e0e\u5176\u4ed6\u5b9e\u73b0\u4e86\u540c\u6837\u63a5\u53e3\u7684\u7c7b\u4e92\u6362\u4f7f\u7528\u3002\u8fd9\u79cd\u65b9\u6cd5\u5e76\u4e0d\u5f71\u54cd\u6587\u4ef6\u5c3a\u5bf8\u6216\u6267\u884c\u901f\u5ea6\uff0c\u56e0\u4e3a\u5b83\u6240\u7528\u7684\u6ce8\u91ca\u53ef\u4ee5\u5728\u5bf9\u4ee3\u7801\u8fdb\u884c\u90e8\u7f72\u65f6\uff0c\u4e0d\u8d39\u5439\u7070\u4e4b\u56fe\u7247\u5730\u4e88\u4ee5\u5254\u9664\u3002\u4f46\u662f\uff0c\u7531\u4e8e\u4e0d\u4f1a\u63d0\u4f9b\u9519\u8bef\u6d88\u606f\uff0c\u5b83\u5bf9\u6d4b\u8bd5\u548c\u8c03\u5f0f\u6ca1\u6709\u4ec0\u4e48\u5e2e\u52a9\u3002\r\n\r\n\u7528\u5c5e\u6027\u68c0\u67e5\u6a21\u4eff\u63a5\u53e3\r\n\u8fd9\u79cd\u65b9\u6cd5\u66f4\u4e25\u8c28\u4e00\u70b9\u3002\u6240\u6709\u7c7b\u90fd\u660e\u786e\u5730\u58f0\u660e\u81ea\u5df1\u5b9e\u73b0\u4e86\u54ea\u4e9b\u63a5\u53e3\uff0c\u90a3\u4e9b\u60f3\u4e0e\u8fd9\u4e9b\u7c7b\u6253\u4ea4\u9053\u7684\u5bf9\u8c61\u53ef\u80fd\u9488\u5bf9\u8fd9\u4e9b\u58f0\u660e\u8fdb\u884c\u68c0\u67e5\u3002\u90a3\u4e9b\u63a5\u53e3\u81ea\u8eab\u4ecd\u7136\u53ea\u662f\u6ce8\u91ca\uff0c\u4f46\u73b0\u5728\u4f60\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u4e00\u4e2a\u5c5e\u6027\u5f97\u77e5\u67d0\u4e2a\u7c7b\u81ea\u79f0\u5b9e\u73b0\u4e86\u4ec0\u4e48\u63a5\u53e3\r\n\/*\r\ninterface Composite{\r\nfunction add(child);\r\nfunction remove(child);\r\nfunction getChild(index);\r\n}\r\n\r\ninterface FormItem{\r\nfunction save();\r\n}\r\n*\/\r\nvar CompositeForm= function(id,method,action){\r\nthis.implementsInterfaces = [\u2018Composite\u2019,\u2019FormItem\u2019];\r\n\u2026\r\n}\r\n\r\n..\r\nfunction addForm(formInstance){\r\nif(!implements(formInstance,\u2019Composite\u2019,\u2019FormItem\u2019))\r\nthrow new Error(\u201cObject does notimplement a required interface.\u201d)\r\n}\r\n\r\n\/\/\u4e0b\u9762\u7684implements\u65b9\u6cd5\uff0c\u662f\u7528\u6765\u68c0\u67e5\u58f0\u660e\u5bf9\u8c61\u662f\u5426\u5b9e\u73b0\u4e86\u9700\u8981\u7684\u63a5\u53e3\r\nfunction implements(object){\r\nfor(var i=1;i\r\n&lt;argements.length;i++){\r\nvar interfaceName = arguments[i];\r\nvar interfaceFound =false;\r\nfor(varj=0;j\r\n&lt;object.implementsInterfaces.length;j++){\r\nif(object.implementsInterfaces[j]==interfaceName){\r\ninterfaceFound=true;\r\nbreak;\r\n}\r\n}\r\nif(!interfaceFound)return false;\r\n}\r\nreturn true;  \/\/all interfaces were found.\r\n}\r\n\r\n\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cCompositeForm\u5ba3\u79f0\u81ea\u5df1\u5b9e\u73b0\u4e86Composite\u548cFormItem\u63a5\u53e3\uff0c\u5176\u505a\u6cd5\u662f\u628a\u8fd9\u4e24\u4e2a\u63a5\u53e3\u540d\u79f0\u52a0\u5165\u4e00\u4e2a\u540d\u4e3aimplementsInterfaces\u7684\u6570\u7ec4\u3002\u7c7b\u663e\u5f0f\u58f0\u660e\u81ea\u5df1\u652f\u6301\u4ec0\u4e48\u63a5\u53e3\u3002\u4efb\u4f55\u4e00\u4e2a\u8981\u6c42\u57fa\u4e8e\u53c2\u6570\u5c5e\u4e8e\u7279\u5b9a\u7c7b\u578b\u7684\u51fd\u6570\u90fd\u53ef\u4ee5\u5bf9\u8fd9\u4e2a\u5c5e\u6027\u8fdb\u884c\u68c0\u67e5\uff0c\u5e76\u5728\u6240\u9700\u63a5\u53e3\u672a\u5728\u58f0\u660e\u4e4b\u5217\u65f6\u629b\u51fa\u4e00\u4e2a\u9519\u8bef\u3002\r\n\u8fd9\u79cd\u65b9\u6cd5\u6709\u51e0\u4e2a\u4f18\u70b9\u3002\u5b83\u5bf9\u7c7b\u6240\u5b9e\u73b0\u7684\u63a5\u53e3\u63d0\u4f9b\u4e86\u6587\u6863\u8bf4\u660e\u3002\u5982\u679c\u9700\u8981\u7684\u63a5\u53e3\u4e0d\u5728\u4e00\u4e2a\u7c7b\u5ba3\u79f0\u652f\u6301\u7684\u63a5\u53e3\u4e4b\u5217\uff0c\u4f60\u4f1a\u770b\u5230\u9519\u8bef\u6d88\u606f\u3002\u901a\u8fc7\u5229\u7528\u8fd9\u4e9b\u9519\u8bef\uff0c\u4f60\u53ef\u4ee5\u5f3a\u8feb\u5176\u4ed6\u7a0b\u5e8f\u5458\u58f0\u660e\u8fd9\u4e9b\u63a5\u53e3\u3002\r\n\u8fd9\u79cd\u65b9\u6cd5\u7684\u4e3b\u8981\u7f3a\u70b9\u5728\u4e8e\u5b83\u5e76\u672a\u786e\u4fdd\u7c7b\u771f\u6b63\u5b9e\u73b0\u4e86\u81ea\u79f0\u5b9e\u73b0\u7684\u63a5\u53e3\u3002\u4f60\u53ea\u77e5\u9053\u5b83\u662f\u5426\u8bf4\u81ea\u5df1\u5b9e\u73b0\u4e86\u63a5\u53e3\u3002\u5728\u521b\u5efa\u4e00\u4e2a\u7c7b\u65f6\u58f0\u660e\u5b83\u5b9e\u73b0\u4e86\u4e00\u4e2a\u63a5\u53e3\uff0c\u4f46\u540e\u6765\u5728\u5b9e\u73b0\u8be5\u63a5\u53e3\u6240\u89c4\u5b9a\u7684\u65b9\u6cd5\u65f6\u5374\u6f0f\u6389\u5176\u4e2d\u7684\u67d0\u4e00\u4e2a\uff0c\u8fd9\u79cd\u9519\u8bef\u5f88\u5e38\u89c1\u3002\u6b64\u65f6\u6240\u6709\u68c0\u67e5\u90fd\u80fd\u901a\u8fc7\uff0c\u4f46\u90a3\u4e2a\u65b9\u6cd5\u5374\u4e0d\u5b58\u5728\uff0c\u8fd9\u5c06\u5728\u4ee3\u7801\u4e2d\u57cb\u4e0b\u4e00\u4e2a\u9690\u60a3\u3002\u53e6\u5916\u663e\u5f0f\u58f0\u660e\u7c7b\u6240\u652f\u6301\u7684\u63a5\u53e3\u4e5f\u9700\u8981\u4e00\u4e9b\u989d\u5916\u7684\u5de5\u4f5c\u3002\r\n\r\n\u7528\u9e2d\u5f0f\u8fa8\u578b\u6a21\u4eff\u63a5\u53e3\r\n\u5176\u5b9e\uff0c\u7c7b\u662f\u5426\u58f0\u660e\u81ea\u5df1\u652f\u6301\u54ea\u4e9b\u63a5\u53e3\u5e76\u4e0d\u91cd\u8981\uff0c\u53ea\u8981\u5b83\u5177\u6709\u8fd9\u4e9b\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u5c31\u884c\u3002\u9e2d\u5f0f\u8fa8\u578b\uff08\u8fd9\u4e2a\u540d\u79f0\u6765\u81eaJames Whitomb Riley\u7684\u540d\u8a00\uff1a\u201c\u50cf\u9e2d\u5b50\u4e00\u6837\u8d70\u8def\u5e76\u4e14\u560e\u560e\u53eb\u7684\u5c31\u662f\u9e2d\u5b50\u201d\uff09\u6b63\u662f\u57fa\u4e8e\u8fd9\u6837\u7684\u8ba4\u8bc6\u3002\u5b83\u628a\u5bf9\u8c61\u5b9e\u73b0\u7684\u65b9\u6cd5\u96c6\u4f5c\u4f5c\u4e3a\u5224\u65ad\u5b83\u662f\u4e0d\u662f\u67d0\u4e2a\u7c7b\u7684\u5b9e\u4f8b\u7684\u552f\u4e00\u6807\u51c6\u3002\u8fd9\u79cd\u6280\u672f\u5728\u68c0\u67e5\u4e00\u4e2a\u7c7b\u662f\u5426\u5b9e\u73b0\u4e86\u67d0\u4e2a\u63a5\u53e3\u65f6\u4e5f\u53ef\u5927\u663e\u5411\u8eab\u624b\u3002\u8fd9\u79cd\u65b9\u6cd5\u80cc\u540e\u7684\u89c2\u70b9\u5f88\u7b80\u5355\uff1a\u5982\u679c\u5bf9\u8c61\u5177\u6709\u4e0e\u63a5\u53e3\u5b9a\u4e49\u7684\u65b9\u6cd5\u540c\u540d\u7684\u6240\u6709\u65b9\u6cd5\uff0c\u90a3\u4e48\u5c31\u53ef\u4ee5\u8ba4\u4e3a\u5b83\u5b9e\u73b0\u4e86\u8fd9\u4e2a\u63a5\u53e3\u3002\u4f60\u53ef\u4ee5\u7528\u4e00\u4e2a\u8f85\u52a9\u51fd\u6570\u6765\u786e\u4fdd\u5bf9\u8c61\u5177\u6709\u6240\u6709\u5fc5\u9700\u7684\u65b9\u6cd5: \/\/Interface.\r\nvar Composite =new Interface(\u201cComposite\u201d,[\u201cadd\u201d,\u201dremove\u201d,\u201dgetChild\u201d]);\r\nvar FormItem = new Interface(\u201cFormItem\u201d,[\u2018save\u2019]);\r\n\/\/CompositeFormclass\r\nvar CompositeForm= function(id,method,action){\r\n\u2026.\r\n}\r\nfunction addForm(formInstance){\r\nensureImplements(formInstance,Composite,FormItem);\r\n\/\/This function will throw an error if a required method is notimplemented.\r\n}\r\n\u4e0e\u53e6\u5916\u4e24\u79cd\u65b9\u6cd5\u4e0d\u540c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5e76\u4e0d\u501f\u52a9\u6ce8\u91ca\u3002\u5176\u5404\u4e2a\u65b9\u9762\u90fd\u662f\u53ef\u4ee5\u5f3a\u5236\u5b9e\u65bd\u7684\u3002ensureImplements\u51fd\u6570\u9700\u8981\u81f3\u5c11\u4e24\u4e2a\u53c2\u6570\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u60f3\u8981\u68c0\u67e5\u7684\u5bf9\u8c61\u3002\u5176\u4f59\u53c2\u6570\u662f\u636e\u4ee5\u5bf9\u90a3\u4e2a\u5bf9\u8c61\u8fdb\u884c\u68c0\u67e5\u7684\u63a5\u53e3\u3002\u8be5\u51fd\u6570\u68c0\u67e5\u5176\u7b2c\u4e00\u4e2a\u53c2\u6570\u4ee3\u8868\u7684\u5bf9\u8c61\u662f\u5426\u5b9e\u73b0\u4e86\u90a3\u4e9b\u63a5\u53e3\u6240\u58f0\u660e\u7684\u6240\u6709\u65b9\u6cd5\u3002\u5982\u679c\u53d1\u73b0\u6f0f\u6389\u4e86\u4efb\u4f55\u4e00\u4e2a\u65b9\u6cd5\uff0c\u5b83\u5c31\u4f1a\u629b\u51fa\u9519\u8bef\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u6240\u7f3a\u5c11\u7684\u90a3\u4e2a\u65b9\u6cd5\u548c\u672a\u88ab\u6b63\u786e\u5b9e\u73b0\u7684\u63a5\u53e3\u7684\u540d\u79f0\u7b49\u6709\u7528\u4fe1\u606f\u3002\u8fd9\u79cd\u68c0\u67e5\u53ef\u4ee5\u7528\u5728\u4ee3\u7801\u4e2d\u4efb\u4f55\u9700\u8981\u786e\u4fdd\u67d0\u4e2a\u5bf9\u8c61\u5b9e\u73b0\u4e86\u67d0\u4e2a\u63a5\u53e3\u7684\u5730\u65b9\u3002\u5728\u672c\u4f8b\u4e2d\uff0caddForm\u51fd\u6570\u4ec5\u5f53\u4e00\u4e2a\u8868\u5355\u5bf9\u8c61\u652f\u6301\u6240\u6709\u5fc5\u8981\u7684\u65b9\u6cd5\u65f6\u624d\u4f1a\u5bf9\u5176\u6267\u884c\u6dfb\u52a0\u64cd\u4f5c\u3002\r\n\u5c3d\u7ba1\u9e2d\u5f0f\u8fa8\u578b\u53ef\u80fd\u662f\u4e0a\u8ff0\u4e09\u79cd\u65b9\u6cd5\u4e2d\u6700\u6709\u7528\u7684\u4e00\u79cd\uff0c\u4f46\u5b83\u4e5f\u6709\u4e00\u4e9b\u7f3a\u70b9\u3002\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u7c7b\u5e76\u4e0d\u58f0\u660e\u81ea\u5df1\u5b9e\u73b0\u4e86\u54ea\u4e9b\u63a5\u53e3\uff0c\u8fd9\u964d\u4f4e\u4e86\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\uff0c\u5e76\u4e14\u4e5f\u7f3a\u4e4f\u5176\u4ed6\u4e24\u79cd\u65b9\u6cd5\u90a3\u6837\u7684\u81ea\u6211\u63cf\u8ff0\u6027\u3002\u5b83\u9700\u8981\u4f7f\u7528\u4e00\u4e2a\u8f85\u52a9\u7c7bInterface\u548c\u4e00\u4e2a\u8f85\u52a9\u51fd\u6570ensureImplements\u3002\u800c\u4e14\uff0c\u5b83\u53ea\u5173\u5fc3\u65b9\u6cd5\u7684\u540d\u79f0\uff0c\u5e76\u4e0d\u68c0\u67e5\u5176\u53c2\u6570\u7684\u540d\u79f0\u3001\u6570\u76ee\u6216\u7c7b\u578b\u3002\r\n\r\n\u7b2c\u4e00\u79cd\u548c\u7b2c\u4e09\u79cd\u7ed3\u5408\r\n\u6211\u4eec\u7528\u6ce8\u91ca\u58f0\u660e\u7c7b\u652f\u6301\u7684\u63a5\u53e3\uff0c\u4ece\u800c\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u53ca\u5176\u6587\u6863\u7684\u5b8c\u5584\u6027\u3002\u6211\u4eec\u8fd8\u7528\u8f85\u52a9\u7c7bInterface\u53ca\u7c7b\u65b9\u6cd5Interface.ensureImplements\u6765\u5bf9\u5bf9\u8c61\u5b9e\u73b0\u7684\u65b9\u6cd5\u8fdb\u884c\u663e\u793a\u68c0\u67e5\u3002\u5982\u679c\u5bf9\u8c61\u672a\u80fd\u901a\u8fc7\u68c0\u67e5\uff0c\u8fd9\u4e2a\u8bbf\u6c42\u5c06\u8fd4\u56de\u4e00\u6761\u6709\u7528\u7684\u9519\u8bef\u6d88\u606f\u3002\r\n\r\nInterface\u7c7b\r\nvar Interface =function(name,methods){\r\nif(arguments.length!=2){\r\nthrow newError(\u201cInterface constructor called width\u201d+arguments.legnth+\u201darguments,butexpected exactly 2. \u201d);\r\n}\r\nthis.name = name;\r\nthis.methods = [];\r\nfor(var i=1,len=methods.length;i\r\n&lt;len;i++){\r\nif(typeof methods[i] !==\u2019string\u2019){\r\nthrow new Error(\u201cinterface costructorexpects method names to be passed in as a string\u201d);\r\n}\r\nthis.methods.push(methods[i]);\r\n}\r\n}\r\n\r\n\/\/Static class method\r\nInterface.ensureImplements =function(object){\r\nif(arguments.length&lt;2){\r\nthrow new Error(\"FunctionInterface.ensureImplements called with\u201d+arguments.length+\u201darguments, but expeted at least 2.\");\r\n}\r\nfor(var i=1,len=arguments.length;i\r\n&lt;len;i++){\r\nvar interface = arguments[i];\r\nif(interface.constructor!==Interface){\r\nthrow new Error(\"Function Interface.ensureImplements expects arguments two and above to be instances of  Interface.\")\r\n}\r\nfor(var j= 0,methodLen =interface.methods.length;j\r\n&lt;methodLen;j++){\r\nvar method = interface.methods[j];\r\nif(!object[method] || typeof object[method]!=='function'){\r\nthrow newError(\"Function Interface.ensureImplements:object does not implement the\"+interface.name+\"interface. Method\"+method+\" was not found.\")\r\n}\r\n}\r\n}\r\n}\r\n\u4ece\u4e2d\u53ef\u4ee5\u770b\u5230\uff0c\u8be5\u7c7b\u6240\u6709\u65b9\u6cd5\u5bf9\u5176\u53c2\u6570\u90fd\u6709\u4e25\u683c\u7684\u8981\u6c42\uff0c\u5982\u679c\u53c2\u6570\u672a\u80fd\u901a\u8fc7\u68c0\u67e5\uff0c\u5c06\u5bfc\u81f4\u9519\u8bef\u7684\u629b\u51fa\u3002\u6211\u4eec\u7279\u5730\u52a0\u5165\u8fd9\u79cd\u68c0\u67e5\u7684\u76ee\u7684\u5728\u4e8e\uff1a\u5982\u679c\u6ca1\u6709\u9519\u8bef\u629b\u51fa\uff0c\u90a3\u4e48\u4f60\u53ef\u4ee5\u80af\u5b9a\u63a5\u53e3\u5df2\u7ecf\u5f97\u5230\u4e86\u6b63\u786e\u7684\u58f0\u660e\u548c\u5b9e\u73b0\u3002\r\nInterface\u7c7b\u7684\u4f7f\u7528\u573a\u5408\r\n\u4e25\u683c\u7684\u7c7b\u578b\u68c0\u67e5\u5e76\u4e0d\u603b\u662f\u660e\u667a\u7684\u3002\u8bb8\u591ajs\u7a0b\u5e8f\u5458\u6839\u672c\u4e0d\u7528\u63a5\u53e3\u6216\u5b83\u6240\u63d0\u4f9b\u7684\u90a3\u79cd\u68c0\u67e5\uff0c\u4e5f\u7167\u6837\u4e00\u5e72\u591a\u5e74\u3002\u63a5\u53e3\u5728\u8fd0\u7528\u8bbe\u8ba1\u6a21\u5f0f\u5b9e\u73b0\u590d\u6742\u7cfb\u7edf\u7684\u65f6\u5019\u6700\u80fd\u4f53\u73b0\u5176\u4ef7\u503c\u3002\u5b83\u770b\u4f3c\u964d\u4f4ejavascript\u7684\u7075\u6d3b\u6027\uff0c\u800c\u5b9e\u9645\u4e0a\uff0c\u56e0\u4e3a\u4f7f\u7528\u63a5\u53e3\u53ef\u4ee5\u964d\u4f4e\u5bf9\u8c61\u95f4\u7684\u8026\u5408\u7a0b\u5ea6\uff0c\u6240\u4ee5\u5b83\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u3002\u63a5\u53e3\u53ef\u4ee5\u8ba9\u51fd\u6570\u53d8\u5f97\u66f4\u7075\u6d3b\uff0c\u56e0\u4e3a\u4f60\u65e2\u80fd\u5411\u51fd\u6570\u4f20\u9012\u4efb\u4f55\u7c7b\u578b\u7684\u53c2\u6570\uff0c\u53c8\u80fd\u4fdd\u8bc1\u5b83\u53ea\u4f1a\u4f7f\u7528\u90a3\u4e9b\u5177\u6709\u5fc5\u8981\u65b9\u6cd5\u7684\u5bf9\u8c61\u3002\r\nInterface\u7c7b\u7684\u7528\u6cd5\r\n\u5224\u65ad\u4ee3\u7801\u4e2d\u4f7f\u7528\u63a5\u53e3\u662f\u5426\u5212\u7b97\u662f\u6700\u91cd\u8981\u7684\u4e00\u6b65\u3002\u5bf9\u4e8e\u5c0f\u578b\u7684\u3001\u4e0d\u592a\u8d39\u4e8b\u7684\u9879\u76ee\u6765\u8bf4\uff0c\u63a5\u53e3\u7684\u597d\u5904\u4e5f\u8bb8\u5e76\u4e0d\u660e\u663e\uff0c\u53ea\u662f\u5f92\u589e\u5176\u590d\u6742\u5ea6\u800c\u5df2\u3002\u4f60\u9700\u8981\u81ea\u884c\u6743\u8861\u5176\u5229\u5f0a\u3002\u5982\u679c\u8ba4\u4e3a\u5728\u9879\u76ee\u4e2d\u4f7f\u7528\u63a5\u53e3\u5229\u5927\u4e8e\u5f0a\uff0c\u90a3\u4e48\u53ef\u4ee5\u53c2\u7167\u5982\u4e0b\u4f7f\u7528\u8bf4\u660e\uff1a\r\n1\u3001    \u5c06Interface\u7c7b\u7eb3\u5165HTML\u6587\u4ef6\u3002\r\n2\u3001    \u9010\u4e00\u68c0\u67e5\u4ee3\u7801\u4e2d\u6240\u6709\u4ee5\u5bf9\u8c61\u4e3a\u53c2\u6570\u7684\u65b9\u6cd5\u3002\u641e\u6e05\u4ee3\u7801\u6b63\u5e38\u8fd0\u8f6c\u8981\u6c42\u7684\u8fd9\u4e9b\u5bf9\u8c61\u53c2\u6570\u5177\u6709\u54ea\u4e9b\u65b9\u6cd5\r\n3\u3001    \u4e3a\u4f60\u9700\u8981\u7684\u6bcf\u4e00\u4e2a\u4e0d\u540c\u7684\u65b9\u6cd5\u96c6\u521b\u5efa\u4e00\u4e2aInterface\u5bf9\u8c61\u3002\r\n4\u3001    \u5254\u9664\u6240\u6709\u9488\u5bf9\u6784\u9020\u5668\u663e\u5f0f\u68c0\u67e5\u3002\u56e0\u4e3a\u6211\u4eec\u4f7f\u7528\u662f\u9e2d\u5f0f\u8fa8\u578b\uff0c\u6240\u4ee5\u5bf9\u8c61\u7684\u7c7b\u578b\u4e0d\u518d\u91cd\u8981\u3002\r\n5\u3001    \u4ee5Interface.ensureImplements\u53d6\u4ee3\u539f\u6765\u7684\u6784\u9020\u5668\u68c0\u67e5\u3002\r\n\u793a\u4f8b\r\n\u5047\u8bbe\u4f60\u8981\u521b\u5efa\u4e00\u4e2a\u7c7b\uff0c\u5b83\u53ef\u4ee5\u5c06\u4e00\u4e9b\u81ea\u52a8\u5316\u6d4b\u8bd5\u7ed3\u679c\u8f6c\u5316\u4e3a\u9002\u4e8e\u5728\u7f51\u9875\u4e0a\u67e5\u770b\u7684\u683c\u5f0f\u3002\u8be5\u7c7b\u7684\u6784\u9020\u5668\u4ee5\u4e00\u4e2aTestResult\u7c7b\u7684\u5b9e\u4f8b\u4e3a\u53c2\u6570\u3002\u5b83\u4f1a\u5e94\u5ba2\u6237\u7684\u8bf7\u6c42\u5bf9\u8fd9\u4e2aTestResult\u5bf9\u8c61\u6240\u5c01\u88c5\u7684\u6570\u636e\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u7136\u540e\u8f93\u51fa\u3002\r\n\u539f\u59cb\u5b9a\u4e49\uff1a\r\nvar ResultFormatter =function(resultsObject){\r\nif(!(resultsObject instanceof TestResult)){\r\nthrow newError(\"ResultsFormatter:constructor requires an instance of TestResult asan argument.\")\r\n}\r\nthis.resultsObject = resultsObject;\r\n}\r\nResultFormatter.prototype.renderResults =function(){\r\nvar dateOfTest = this.resultsObject.getDate();\r\nvar resultsArray =this.resultsObject.getResults();\r\nvar resultsContainer =document.createElement('div');\r\nvar resultsHeader =document.createElement(\"h3\");\r\nresultsHeader.innerHTML = \"TestResults from \"+dateOfTest.toUTCString();\r\nresultsContainer.appendChild(resultsHeader);\r\nvar resultList =document.createElement(\"ul\");\r\nresultsContainer.appendChild(resultList);\r\nfor(var i=0,len=resultsArray.length;i\r\n&lt;len;i++){\r\nvar listItem=document.createElement('li');\r\nlistItem.innerHTML =resultsArray[i];\r\nresultList.appendChild(listItem);\r\n}\r\nreturn resultsContainer;\r\n}\r\n\r\n\u8be5\u7c7b\u7684\u6784\u9020\u5668\u4f1a\u5bf9\u53c2\u6570\u8fdb\u884c\u68c0\u67e5\uff0c\u4ee5\u786e\u4fdd\u5176\u7684\u786e\u4e3aTestResult\u7c7b\u7684\u5b9e\u4f8b\u3002\u5982\u679c\u53c2\u6570\u8fbe\u4e0d\u5230\u8981\u793a\uff0c\u6784\u9020\u5668\u5c06\u629b\u51fa\u4e00\u4e2a\u9519\u8bef\u3002\u6709\u4e86\u8fd9\u6837\u7684\u4fdd\u8bc1\uff0c\u5728\u7f16\u5199renderResults\u65b9\u6cd5\u65f6\uff0c\u4f60\u5c31\u53ef\u4ee5\u8ba4\u5b9a\u6709getDate\u548cgetResults\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u53ef\u4f9b\u4f7f\u7528\u3002\u5b9e\u9645\u4e0a\u8fd9\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u6240\u9700\u8981\u7684\u65b9\u6cd5\u5f97\u5230\u4e86\u5b9e\u73b0\u3002TestResult\u7c7b\u53ef\u80fd\u4f1a\u88ab\u4fee\u6539\uff0c\u81f4\u4f7f\u5176\u4e0d\u518d\u62e5\u6709getDate()\u65b9\u6cd5\u3002\u5728\u6b64\u60c5\u51b5\u4e0b\uff0c\u6784\u9020\u5668\u4e2d\u7684\u68c0\u67e5\u4ecd\u80fd\u901a\u8fc7\uff0c\u4f46renderResults\u65b9\u6cd5\u5374\u4f1a\u5931\u7075\u3002\r\n\u6b64\u5916\uff0c\u6784\u9020\u5668\u7684\u8fd9\u4e2a\u68c0\u67e5\u65bd\u52a0\u4e86\u4e00\u4e9b\u4e0d\u5fc5\u8981\u7684\u9650\u5236\u3002\u5b83\u4e0d\u5141\u8bb8\u4f7f\u7528\u5176\u4ed6\u7c7b\u7684\u5b9e\u4f8b\u4f5c\u4e3a\u53c2\u6570\uff0c\u54ea\u6015\u5b83\u4eec\u539f\u672c\u53ef\u4ee5\u5982\u613f\u53d1\u6325\u4f5c\u7528\u3002\u4f8b\u5982\uff0c\u6709\u4e00\u4e2a\u540d\u4e3aWeatherData\u5728\u4e5f\u62e5\u6709getDate\u548cgetResults\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u3002\u5b83\u672c\u6765\u53ef\u4ee5\u88abResultFormatter\u7c7b\u7528\u5f97\u597d\u597d\u7684\u3002\u4f46\u662f\u90a3\u4e2a\u663e\u5f0f\u7c7b\u578b\u68c0\u67e5\u4f1a\u963b\u6b62\u4f7f\u7528WeatherData\u7c7b\u7684\u4efb\u4f55\u5b9e\u4f8b\u3002\r\n\u95ee\u9898\u89e3\u51b3\u529e\u6cd5\u662f\u5220\u9664\u90a3\u4e2a\u4f7f\u7528instanceOf\u7684\u68c0\u67e5\uff0c\u5e76\u7528\u63a5\u53e3\u4ee3\u66ff\u5b83\u3002\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u8fd9\u4e2a\u63a5\u53e3\uff1a\r\n\/\/ResultSetInterface.\r\nvar ResultSet =new Interface(\u201cResultSet\u201d,[\u2018getDate\u2019,\u2019getResults\u2019]);\r\n\u4e0a\u9762\u7684\u8fd9\u884c\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2aInterface\u5bf9\u8c61\u7684\u65b0\u5b9e\u4f8b\u3002\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u63a5\u53e3\u7684\u540d\u79f0\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u5176\u4e2d\u7684\u6bcf\u4e2a\u5b57\u7b26\u4e32\u90fd\u662f\u4e00\u4e2a\u5fc5\u9700\u7684\u65b9\u6cd5\u540d\u79f0\u3002\u6709\u4e86\u8fd9\u4e2a\u63a5\u53e3\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u7528\u63a5\u53e3\u68c0\u67e5\u66ff\u4ee3instanceOf\u68c0\u67e5\u4e86\r\nvar ResultFormatter = function(resultsObject){\r\nInterface.ensureImplements(resultsObject,ResultSet);\r\nthis.resultsObject = resultsObject;\r\n}\r\nResultFormatter.prototype.renderResults= function(){\r\n\u2026\r\n}\r\nrenderResults\u65b9\u6cd5\u4fdd\u6301\u4e0d\u53d8\u3002\u800c\u6784\u9020\u5668\u5219\u88ab\u6539\u4e3a\u4f7f\u7528ensureImplements\u65b9\u6cd5\u800c\u4e0d\u662finstanceof\u8fd0\u7b97\u7b26\u3002\u73b0\u5728\u6784\u9020\u5668\u53ef\u4ee5\u63a5\u53d7WeatherData\u6216\u5176\u4ed6\u4efb\u4f55\u5b9e\u73b0\u6240\u9700\u8981\u65b9\u6cd5\u7684\u7c7b\u7684\u5b9e\u4f8b\u3002\u6211\u4eec\u53ea\u4fee\u6539\u4e86\u51e0\u884cResultFormatter\u7c7b\u4ee3\u7801\uff0c\u5c31\u8ba9\u90a3\u4e2a\u68c0\u67e5\u53d8\u5f97\u66f4\u51c6\u786e\uff0c\u800c\u4e14\u66f4\u5bbd\u5bb9\u3002\r\n\r\n\u4f9d\u8d56\u4e8e\u63a5\u53e3\u7684\u8bbe\u8ba1\u6a21\u5f0f\r\nl  \u5de5\u5382\u6a21\u5f0f\r\nl  \u7ec4\u5408\u6a21\u5f0f\r\nl  \u88c5\u9970\u6a21\u5f0f\r\nl  \u547d\u4ee4\u6a21\u5f0f\r\n\r\n\r\n\u4f53\u4f1a\uff1a\r\n1.\u7528Interface\u6765\u5b9e\u4f8b\u5316\u4e00\u4e2a\u63a5\u53e3\r\n2.\u58f0\u660e\u4e00\u4e2a\u7c7b\u5b9e\u73b0\u8fd9\u4e9b\u63a5\u53e3\u65b9\u6cd5\uff0c\u5728\u5b9e\u4f8b\u5316\u8be5\u5bf9\u8c61\u65f6\uff0c\u6216\u8c03\u7528\u6307\u5b9a\u5b9e\u4f8b\u65f6\uff0c\u7528Interface\u7684ensureImplements(\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\uff0c\u63a5\u53e3\u5bf9\u8c61)\uff1b\u5224\u5b9a\u662f\u5426\u7ee7\u7eed\u4e0b\u53bb\u3002\r\n\r\n\u63a5\u53e3\u5b9e\u4f8b\r\n<a href=\"http:\/\/www.daliane.com\/wp-content\/uploads\/2015\/08\/js-interface.htm\">js-interface<\/a><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u63a5\u53e3 \u4ec0\u4e48\u662f\u63a5\u53e3 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