{"id":2946,"date":"2017-12-19T10:08:42","date_gmt":"2017-12-19T02:08:42","guid":{"rendered":"http:\/\/www.daliane.com\/?p=2946"},"modified":"2017-12-19T17:20:04","modified_gmt":"2017-12-19T09:20:04","slug":"immutablejs_you_dian_ji_chang_yong_api_jie_shao","status":"publish","type":"post","link":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/immutablejs_you_dian_ji_chang_yong_api_jie_shao\/","title":{"rendered":"Immutablejs\u4f18\u70b9\u53ca\u5e38\u7528API\u4ecb\u7ecd"},"content":{"rendered":"

\n\tJavaScript \u4e2d\u7684\u5bf9\u8c61\u4e00\u822c\u662f\u53ef\u53d8\u7684\uff08Mutable\uff09\uff0c\u56e0\u4e3a\u4f7f\u7528\u4e86\u5f15\u7528\u8d4b\u503c\uff0c\u65b0\u7684\u5bf9\u8c61\u7b80\u5355\u7684\u5f15\u7528\u4e86\u539f\u59cb\u5bf9\u8c61\uff0c\u6539\u53d8\u65b0\u7684\u5bf9\u8c61\u5c06\u5f71\u54cd\u5230\u539f\u59cb\u5bf9\u8c61\u3002\u5982 foo={a: 1}; bar=foo; bar.a=2 \u4f60\u4f1a\u53d1\u73b0\u6b64\u65f6 foo.a \u4e5f\u88ab\u6539\u6210\u4e86 2\u3002\u867d\u7136\u8fd9\u6837\u505a\u53ef\u4ee5\u8282\u7ea6\u5185\u5b58\uff0c\u4f46\u5f53\u5e94\u7528\u590d\u6742\u540e\uff0c\u8fd9\u5c31\u9020\u6210\u4e86\u975e\u5e38\u5927\u7684\u9690\u60a3\uff0cMutable \u5e26\u6765\u7684\u4f18\u70b9\u53d8\u5f97\u5f97\u4e0d\u507f\u5931\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4e00\u822c\u7684\u505a\u6cd5\u662f\u4f7f\u7528 shallowCopy\uff08\u6d45\u62f7\u8d1d\uff09\u6216 deepCopy\uff08\u6df1\u62f7\u8d1d\uff09\u6765\u907f\u514d\u88ab\u4fee\u6539\uff0c\u4f46\u8fd9\u6837\u505a\u9020\u6210\u4e86 CPU \u548c\u5185\u5b58\u7684\u6d6a\u8d39\u3002\n<\/p>\n

\n\tImmutable \u53ef\u4ee5\u5f88\u597d\u5730\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u3002\n<\/p>\n

\n\t\n<\/p>\n

\n\tmmutable Data \u5c31\u662f\u4e00\u65e6\u521b\u5efa\uff0c\u5c31\u4e0d\u80fd\u518d\u88ab\u66f4\u6539\u7684\u6570\u636e\u3002\u5bf9 Immutable \u5bf9\u8c61\u7684\u4efb\u4f55\u4fee\u6539\u6216\u6dfb\u52a0\u5220\u9664\u64cd\u4f5c\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684 Immutable \u5bf9\u8c61\u3002Immutable \u5b9e\u73b0\u7684\u539f\u7406\u662f Persistent Data Structure<\/span>\uff08\u6301\u4e45\u5316\u6570\u636e\u7ed3\u6784\uff09\uff0c\u4e5f\u5c31\u662f\u4f7f\u7528\u65e7\u6570\u636e\u521b\u5efa\u65b0\u6570\u636e\u65f6\uff0c\u8981\u4fdd\u8bc1\u65e7\u6570\u636e\u540c\u65f6\u53ef\u7528\u4e14\u4e0d\u53d8\u3002\u540c\u65f6\u4e3a\u4e86\u907f\u514d deepCopy \u628a\u6240\u6709\u8282\u70b9\u90fd\u590d\u5236\u4e00\u904d\u5e26\u6765\u7684\u6027\u80fd\u635f\u8017\uff0cImmutable \u4f7f\u7528\u4e86 Structural Sharing<\/span>\uff08\u7ed3\u6784\u5171\u4eab\uff09\uff0c\u5373\u5982\u679c\u5bf9\u8c61\u6811\u4e2d\u4e00\u4e2a\u8282\u70b9\u53d1\u751f\u53d8\u5316\uff0c\u53ea\u4fee\u6539\u8fd9\u4e2a\u8282\u70b9\u548c\u53d7\u5b83\u5f71\u54cd\u7684\u7236\u8282\u70b9\uff0c\u5176\u5b83\u8282\u70b9\u5219\u8fdb\u884c\u5171\u4eab\u3002\u8bf7\u770b\u4e0b\u9762\u52a8\u753b\uff1a\n<\/p>\n

\n\t\"Immutable\n<\/p>\n

\n\t\n<\/p>\n

\n\t1. Immutable \u964d\u4f4e\u4e86 Mutable \u5e26\u6765\u7684\u590d\u6742\u5ea6
\n<\/h3>\n

\n\t\n<\/p>\n

\n\t\u53ef\u53d8\uff08Mutable\uff09\u6570\u636e\u8026\u5408\u4e86 Time \u548c Value \u7684\u6982\u5ff5\uff0c\u9020\u6210\u4e86\u6570\u636e\u5f88\u96be\u88ab\u56de\u6eaf\u3002\n<\/p>\n

\n\t\u6bd4\u5982\u4e0b\u9762\u4e00\u6bb5\u4ee3\u7801\uff1a\n<\/p>\n

function<\/span> touchAndLog<\/span>(<\/span>touchFn<\/span>)<\/span> <\/span>{<\/span> let data <\/span>=<\/span> <\/span>{<\/span> key<\/span>:<\/span> <\/span>'value'<\/span> <\/span>};<\/span> touchFn<\/span>(<\/span>data<\/span>);<\/span> console<\/span>.<\/span>log<\/span>(<\/span>data<\/span>.<\/span>key<\/span>);<\/span> <\/span>\/\/ \u731c\u731c\u4f1a\u6253\u5370\u4ec0\u4e48\uff1f<\/span> <\/span>}<\/span><\/pre>\n
\n\t\u5728\u4e0d\u67e5\u770b touchFn \u7684\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\uff0c\u56e0\u4e3a\u4e0d\u786e\u5b9a\u5b83\u5bf9 data \u505a\u4e86\u4ec0\u4e48\uff0c\u4f60\u662f\u4e0d\u53ef\u80fd\u77e5\u9053\u4f1a\u6253\u5370\u4ec0\u4e48\uff08\u8fd9\u4e0d\u662f\u5e9f\u8bdd\u5417\uff09\u3002\u4f46\u5982\u679c data\u662f Immutable \u7684\u5462\uff0c\u4f60\u53ef\u4ee5\u5f88\u80af\u5b9a\u7684\u77e5\u9053\u6253\u5370\u7684\u662f value\u3002\n<\/p>\n
\n\t2. \u8282\u7701\u5185\u5b58
\n<\/h3>\n
\n\tImmutable.js \u4f7f\u7528\u4e86 Structure Sharing \u4f1a\u5c3d\u91cf\u590d\u7528\u5185\u5b58\uff0c\u751a\u81f3\u4ee5\u524d\u4f7f\u7528\u7684\u5bf9\u8c61\u4e5f\u53ef\u4ee5\u518d\u6b21\u88ab\u590d\u7528\u3002\u6ca1\u6709\u88ab\u5f15\u7528\u7684\u5bf9\u8c61\u4f1a\u88ab\u5783\u573e\u56de\u6536\u3002\n<\/p>\n
import<\/span> <\/span>{<\/span> <\/span>Map<\/span>}<\/span> from <\/span>'immutable'<\/span>;<\/span> let a <\/span>=<\/span> <\/span>Map<\/span>({<\/span> select<\/span>:<\/span> <\/span>'users'<\/span>,<\/span> filter<\/span>:<\/span> <\/span>Map<\/span>({<\/span> name<\/span>:<\/span> <\/span>'Cam'<\/span> <\/span>})<\/span> <\/span>})<\/span> let b <\/span>=<\/span> a<\/span>.<\/span>set<\/span>(<\/span>'select'<\/span>,<\/span> <\/span>'people'<\/span>);<\/span> a <\/span>===<\/span> b<\/span>;<\/span> <\/span>\/\/ false<\/span> a<\/span>.<\/span>get<\/span>(<\/span>'filter'<\/span>)<\/span> <\/span>===<\/span> b<\/span>.<\/span>get<\/span>(<\/span>'filter'<\/span>);<\/span> <\/span>\/\/ true<\/span><\/pre>\n
\n\t\u4e0a\u9762 a \u548c b \u5171\u4eab\u4e86\u6ca1\u6709\u53d8\u5316\u7684 filter \u8282\u70b9\u3002\n<\/p>\n
\n\t3. Undo\/Redo\uff0cCopy\/Paste\uff0c\u751a\u81f3\u65f6\u95f4\u65c5\u884c\u8fd9\u4e9b\u529f\u80fd\u505a\u8d77\u6765\u5c0f\u83dc\u4e00\u789f
\n<\/h3>\n
\n\t\u56e0\u4e3a\u6bcf\u6b21\u6570\u636e\u90fd\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u53ea\u8981\u628a\u8fd9\u4e9b\u6570\u636e\u653e\u5230\u4e00\u4e2a\u6570\u7ec4\u91cc\u50a8\u5b58\u8d77\u6765\uff0c\u60f3\u56de\u9000\u5230\u54ea\u91cc\u5c31\u62ff\u51fa\u5bf9\u5e94\u6570\u636e\u5373\u53ef\uff0c\u5f88\u5bb9\u6613\u5f00\u53d1\u51fa\u64a4\u9500\u91cd\u505a\u8fd9\u79cd\u529f\u80fd\u3002\n<\/p>\n
\n\t4. \u5e76\u53d1\u5b89\u5168
\n<\/h3>\n
\n\t\u4f20\u7edf\u7684\u5e76\u53d1\u975e\u5e38\u96be\u505a\uff0c\u56e0\u4e3a\u8981\u5904\u7406\u5404\u79cd\u6570\u636e\u4e0d\u4e00\u81f4\u95ee\u9898\uff0c\u56e0\u6b64\u300e\u806a\u660e\u4eba\u300f\u53d1\u660e\u4e86\u5404\u79cd\u9501\u6765\u89e3\u51b3\u3002\u4f46\u4f7f\u7528\u4e86 Immutable \u4e4b\u540e\uff0c\u6570\u636e\u5929\u751f\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u5e76\u53d1\u9501\u5c31\u4e0d\u9700\u8981\u4e86<\/span>\u3002\n<\/p>\n
\n\t\u7136\u800c\u73b0\u5728\u5e76\u6ca1\u4ec0\u4e48\u5375\u7528\uff0c\u56e0\u4e3a JavaScript \u8fd8\u662f\u5355\u7ebf\u7a0b\u8fd0\u884c\u7684\u554a\u3002\u4f46\u672a\u6765\u53ef\u80fd\u4f1a\u52a0\u5165\uff0c\u63d0\u524d\u89e3\u51b3\u672a\u6765\u7684\u95ee\u9898\u4e0d\u4e5f\u633a\u597d\u5417\uff1f\n<\/p>\n
\n\t5. \u62e5\u62b1\u51fd\u6570\u5f0f\u7f16\u7a0b
\n<\/h3>\n
\n\tImmutable \u672c\u8eab\u5c31\u662f\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u7684\u6982\u5ff5\uff0c\u7eaf\u51fd\u6570\u5f0f\u7f16\u7a0b\u6bd4\u9762\u5411\u5bf9\u8c61\u66f4\u9002\u7528\u4e8e\u524d\u7aef\u5f00\u53d1\u3002\u56e0\u4e3a\u53ea\u8981\u8f93\u5165\u4e00\u81f4\uff0c\u8f93\u51fa\u5fc5\u7136\u4e00\u81f4\uff0c\u8fd9\u6837\u5f00\u53d1\u7684\u7ec4\u4ef6\u66f4\u6613\u4e8e\u8c03\u8bd5\u548c\u7ec4\u88c5\u3002\n<\/p>\n
\n\t\u50cf ClojureScript\uff0cElm \u7b49\u51fd\u6570\u5f0f\u7f16\u7a0b\u8bed\u8a00\u4e2d\u7684\u6570\u636e\u7c7b\u578b\u5929\u751f\u90fd\u662f Immutable \u7684\uff0c\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48 ClojureScript \u57fa\u4e8e React \u7684\u6846\u67b6 — Om \u6027\u80fd\u6bd4 React \u8fd8\u8981\u597d\u7684\u539f\u56e0\u3002\n<\/p>\n
\n\tImmutable.is
\n<\/h3>\n
\n\t\u4e24\u4e2a immutable \u5bf9\u8c61\u53ef\u4ee5\u4f7f\u7528 === \u6765\u6bd4\u8f83\uff0c\u8fd9\u6837\u662f\u76f4\u63a5\u6bd4\u8f83\u5185\u5b58\u5730\u5740\uff0c\u6027\u80fd\u6700\u597d\u3002\u4f46\u5373\u4f7f\u4e24\u4e2a\u5bf9\u8c61\u7684\u503c\u662f\u4e00\u6837\u7684\uff0c\u4e5f\u4f1a\u8fd4\u56de false\uff1a\n<\/p>\n
let map1 <\/span>=<\/span> <\/span>Immutable<\/span>.<\/span>Map<\/span>({<\/span>a<\/span>:<\/span>1<\/span>,<\/span> b<\/span>:<\/span>1<\/span>,<\/span> c<\/span>:<\/span>1<\/span>});<\/span> let map2 <\/span>=<\/span> <\/span>Immutable<\/span>.<\/span>Map<\/span>({<\/span>a<\/span>:<\/span>1<\/span>,<\/span> b<\/span>:<\/span>1<\/span>,<\/span> c<\/span>:<\/span>1<\/span>});<\/span> map1 <\/span>===<\/span> map2<\/span>;<\/span> <\/span>\/\/ false<\/span><\/pre>\n
\n\t\u4e3a\u4e86\u76f4\u63a5\u6bd4\u8f83\u5bf9\u8c61\u7684\u503c\uff0cimmutable.js \u63d0\u4f9b\u4e86 Immutable.is \u6765\u505a\u300e\u503c\u6bd4\u8f83\u300f\uff0c\u7ed3\u679c\u5982\u4e0b\uff1a\n<\/p>\n
Immutable<\/span>.<\/span>is<\/span>(<\/span>map1<\/span>,<\/span> map2<\/span>);<\/span> <\/span>\/\/ true<\/span><\/pre>\n
\n\tImmutable.is \u6bd4\u8f83\u7684\u662f\u4e24\u4e2a\u5bf9\u8c61\u7684 hashCode \u6216 valueOf\uff08\u5bf9\u4e8e JavaScript \u5bf9\u8c61\uff09\u3002\u7531\u4e8e immutable \u5185\u90e8\u4f7f\u7528\u4e86 Trie \u6570\u636e\u7ed3\u6784\u6765\u5b58\u50a8\uff0c\u53ea\u8981\u4e24\u4e2a\u5bf9\u8c61\u7684 hashCode \u76f8\u7b49\uff0c\u503c\u5c31\u662f\u4e00\u6837\u7684\u3002\u8fd9\u6837\u7684\u7b97\u6cd5\u907f\u514d\u4e86\u6df1\u5ea6\u904d\u5386\u6bd4\u8f83\uff0c\u6027\u80fd\u975e\u5e38\u597d\u3002\n<\/p>\n
\n\t\u540e\u9762\u4f1a\u4f7f\u7528 Immutable.is \u6765\u51cf\u5c11 React \u91cd\u590d\u6e32\u67d3\uff0c\u63d0\u9ad8\u6027\u80fd\u3002\n<\/p>\n
\n\tCursor \u7684\u6982\u5ff5
\n<\/h3>\n
\n\t\u8fd9\u4e2a Cursor \u548c\u6570\u636e\u5e93\u4e2d\u7684\u6e38\u6807\u662f\u5b8c\u5168\u4e0d\u540c\u7684\u6982\u5ff5\u3002\n<\/p>\n
\n\t\u7531\u4e8e Immutable \u6570\u636e\u4e00\u822c\u5d4c\u5957\u975e\u5e38\u6df1\uff0c\u4e3a\u4e86\u4fbf\u4e8e\u8bbf\u95ee\u6df1\u5c42\u6570\u636e\uff0cCursor \u63d0\u4f9b\u4e86\u53ef\u4ee5\u76f4\u63a5\u8bbf\u95ee\u8fd9\u4e2a\u6df1\u5c42\u6570\u636e\u7684\u5f15\u7528\u3002\n<\/p>\n
import<\/span> <\/span>Immutable<\/span> from <\/span>'immutable'<\/span>;<\/span> <\/span>import<\/span> <\/span>Cursor<\/span> from <\/span>'immutable\/contrib\/cursor'<\/span>;<\/span> let data <\/span>=<\/span> <\/span>Immutable<\/span>.<\/span>fromJS<\/span>({<\/span> a<\/span>:<\/span> <\/span>{<\/span> b<\/span>:<\/span> <\/span>{<\/span> c<\/span>:<\/span> <\/span>1<\/span> <\/span>}<\/span> <\/span>}<\/span> <\/span>});<\/span> <\/span>\/\/ \u8ba9 cursor \u6307\u5411 { c: 1 }<\/span> let cursor <\/span>=<\/span> <\/span>Cursor<\/span>.<\/span>from<\/span>(<\/span>data<\/span>,<\/span> <\/span>[<\/span>'a'<\/span>,<\/span> <\/span>'b'<\/span>],<\/span> newData <\/span>=><\/span> <\/span>{<\/span> <\/span>\/\/ \u5f53 cursor \u6216\u5176\u5b50 cursor \u6267\u884c update \u65f6\u8c03\u7528<\/span> console<\/span>.<\/span>log<\/span>(<\/span>newData<\/span>);<\/span> <\/span>});<\/span> cursor<\/span>.<\/span>get<\/span>(<\/span>'c'<\/span>);<\/span> <\/span>\/\/ 1<\/span> cursor <\/span>=<\/span> cursor<\/span>.<\/span>update<\/span>(<\/span>'c'<\/span>,<\/span> x <\/span>=><\/span> x <\/span>+<\/span> <\/span>1<\/span>);<\/span> cursor<\/span>.<\/span>get<\/span>(<\/span>'c'<\/span>);<\/span> <\/span>\/\/ 2<\/span><\/pre>\n
\n\tImmutable \u5219\u63d0\u4f9b\u4e86\u7b80\u6d01\u9ad8\u6548\u7684\u5224\u65ad\u6570\u636e\u662f\u5426\u53d8\u5316\u7684\u65b9\u6cd5<\/span>\uff0c\u53ea\u9700 === \u548c is \u6bd4\u8f83\u5c31\u80fd\u77e5\u9053\u662f\u5426\u9700\u8981\u6267\u884c render()\uff0c\u800c\u8fd9\u4e2a\u64cd\u4f5c\u51e0\u4e4e 0 \u6210\u672c<\/span>\uff0c\u6240\u4ee5\u53ef\u4ee5\u6781\u5927\u63d0\u9ad8\u6027\u80fd\u3002\u4fee\u6539\u540e\u7684 shouldComponentUpdate \u662f\u8fd9\u6837\u7684\uff1a\n<\/p>\n
import<\/span> <\/span>{<\/span> is <\/span>}<\/span> from <\/span>'immutable'<\/span>;<\/span> shouldComponentUpdate<\/span>:<\/span> <\/span>(<\/span>nextProps<\/span>,<\/span> nextState<\/span>)<\/span> <\/span>=><\/span> <\/span>{<\/span> <\/span>return<\/span> <\/span>!(<\/span>this<\/span>.<\/span>props <\/span>===<\/span> nextProps <\/span>||<\/span> is<\/span>(<\/span>this<\/span>.<\/span>props<\/span>,<\/span> nextProps<\/span>))<\/span> <\/span>||<\/span> <\/span>!(<\/span>this<\/span>.<\/span>state <\/span>===<\/span> nextState <\/span>||<\/span> is<\/span>(<\/span>this<\/span>.<\/span>state<\/span>,<\/span> nextState<\/span>));<\/span> <\/span>}<\/span><\/pre>\n
\n\t\u4f7f\u7528 Immutable \u540e\uff0c\u5982\u4e0b\u56fe\uff0c\u5f53\u7ea2\u8272\u8282\u70b9\u7684 state \u53d8\u5316\u540e\uff0c\u4e0d\u4f1a\u518d\u6e32\u67d3\u6811\u4e2d\u7684\u6240\u6709\u8282\u70b9\uff0c\u800c\u662f\u53ea\u6e32\u67d3\u56fe\u4e2d\u7eff\u8272\u7684\u90e8\u5206\uff1a\n<\/p>\n
\n\t\"react\n<\/p>\n
\n\t\u603b\u7ed3
\n<\/h2>\n
\n\tImmutable \u53ef\u4ee5\u7ed9\u5e94\u7528\u5e26\u6765\u6781\u5927\u7684\u6027\u80fd\u63d0\u5347\uff0c\u4f46\u662f\u5426\u4f7f\u7528\u8fd8\u8981\u770b\u9879\u76ee\u60c5\u51b5\u3002\u7531\u4e8e\u4fb5\u5165\u6027\u8f83\u5f3a\uff0c\u65b0\u9879\u76ee\u5f15\u5165\u6bd4\u8f83\u5bb9\u6613\uff0c\u8001\u9879\u76ee\u8fc1\u79fb\u9700\u8981\u8bc4\u4f30\u8fc1\u79fb\u3002\u5bf9\u4e8e\u4e00\u4e9b\u63d0\u4f9b\u7ed9\u5916\u90e8\u4f7f\u7528\u7684\u516c\u5171\u7ec4\u4ef6\uff0c\u6700\u597d\u4e0d\u8981\u628a Immutable \u5bf9\u8c61\u76f4\u63a5\u66b4\u9732\u5728\u5bf9\u5916\u63a5\u53e3\u4e2d\u3002\n<\/p>\n
\n\t\u5982\u679c JS \u539f\u751f Immutable \u7c7b\u578b\u4f1a\u4e0d\u4f1a\u592a\u7f8e\uff0c\u88ab\u79f0\u4e3a React API \u7ec8\u7ed3\u8005\u7684 Sebastian Markb\u00e5ge \u6709\u4e00\u4e2a\u8fd9\u6837\u7684\u63d0\u6848<\/a>\uff0c\u80fd\u5426\u901a\u8fc7\u73b0\u5728\u8fd8\u4e0d\u786e\u5b9a\u3002\u4e0d\u8fc7\u53ef\u4ee5\u80af\u5b9a\u7684\u662f Immutable \u4f1a\u88ab\u8d8a\u6765\u8d8a\u591a\u7684\u9879\u76ee\u4f7f\u7528\u3002\n<\/p>\n
\n\t\n<\/p>\n
\n
\n\t\t\u539f\u751fjs\u8f6c\u6362\u4e3aimmutableData
\n\t<\/h3>\n<\/p>\n
\n\t\tImmutable.fromJS([1,2]) \/\/ immutable\u7684 list\n\t<\/p>\n
\n\t\tImmutable.fromJS({a: 1}) \/\/ immutable\u7684 map\n\t<\/p>\n
\n\t\t\u4eceimmutableData \u56de\u5230 JavaScript \u5bf9\u8c61
\n\t<\/h3>\n
\n\t\timmutableData.toJS()\n\t<\/p>\n
\n\t\t\u5224\u65ad\u4e24\u4e2aimmutable\u6570\u636e\u662f\u5426\u4e00\u81f4
\n\t<\/h3>\n
\n\t\tImmutable.is(immutableA, immutableB)\n\t<\/p>\n
\n\t\t\u5224\u65ad\u662f\u4e0d\u662fmap\u6216List
\n\t<\/h3>\n
\n\t\tImmutable.Map.isMap(x)\n\t<\/p>\n
\n\t\tImmutable.Map.isList(x)\n\t<\/p>\n
\n\t\t\u5bf9\u8c61\u5408\u5e76(\u6ce8\u610f\u662f\u540c\u4e2a\u7c7b\u578b)
\n\t<\/h3>\n
\n\t\timmutableMaB = immutableMapA.merge(immutableMaC)\n\t<\/p>\n
\n\t\tMap\u7684\u589e\u5220\u67e5\u6539
\n\t<\/h3>\n
\n\t\t\u67e5
\n\t<\/h4>\n
\n\t\timmutableData.get(‘a’) \/\/ {a:1} \u5f97\u52301\u3002\n\t<\/p>\n
\n\t\timmutableData.getIn([‘a’, ‘b’]) \/\/ {a:{b:2}} \u5f97\u52302\u3002\u8bbf\u95ee\u6df1\u5c42\u6b21\u7684key\n\t<\/p>\n
\n\t\t\u589e\u548c\u6539(\u6ce8\u610f\u4e0d\u4f1a\u6539\u53d8\u539f\u6765\u7684\u503c\uff0c\u8fd4\u56de\u65b0\u7684\u503c)
\n\t<\/h4>\n
\n\t\timmutableData.set(‘a’, 2) \/\/ {a:1} \u5f97\u52301\u3002\n\t<\/p>\n
\n\t\timmutableData.setIn([‘a’, ‘b’], 3)\n\t<\/p>\n
\n\t\timmutableData.update(‘a’,function(x){return x+1})\n\t<\/p>\n
\n\t\timmutableData.updateIn([‘a’, ‘b’],function(x){return x+1})\n\t<\/p>\n
\n\t\t\u5220
\n\t<\/h4>\n
\n\t\timmutableData.delete(‘a’)\n\t<\/p>\n
\n\t\timmutableData.deleteIn([‘a’, ‘b’])\n\t<\/p>\n
\n\t\tList\u7684\u589e\u5220\u67e5\u6539
\n\t<\/h3>\n
\n\t\t\u5982\u540cMap\uff0c\u4e0d\u8fc7\u53c2\u6570\u53d8\u4e3a\u6570\u5b57\u7d22\u5f15\u3002\n\t<\/p>\n
\n\t\t\u6bd4\u5982immutableList.set(1, 2)\n\t<\/p>\n
\n\t\t\u5176\u5b83\u4fbf\u6377\u51fd\u6570
\n\t<\/h3>\n
\n\t\t\u5982\u540cunderscore\u7684\u65b9\u6cd5\uff0c\u90fd\u6709\u5662\u3002\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"
JavaScript \u4e2d\u7684\u5bf9\u8c61\u4e00\u822c\u662f\u53ef\u53d8\u7684\uff08Mutable\uff09\uff0c\u56e0\u4e3a\u4f7f\u7528\u4e86\u5f15\u7528\u8d4b\u503c\uff0c\u65b0\u7684\u5bf9\u8c61\u7b80\u5355\u7684\u5f15\u7528\u4e86\u539f\u59cb\u5bf9\u8c61…<\/p>\n","protected":false},"author":2,"featured_media":228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[60],"tags":[206],"_links":{"self":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/2946"}],"collection":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/comments?post=2946"}],"version-history":[{"count":3,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/2946\/revisions"}],"predecessor-version":[{"id":2951,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/posts\/2946\/revisions\/2951"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media\/228"}],"wp:attachment":[{"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/media?parent=2946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/categories?post=2946"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/wp-json\/wp\/v2\/tags?post=2946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}