{"id":269,"date":"2024-11-25T09:53:57","date_gmt":"2024-11-25T01:53:57","guid":{"rendered":"https:\/\/www.vincedeck.top\/?p=269"},"modified":"2024-12-23T17:42:10","modified_gmt":"2024-12-23T09:42:10","slug":"redux-toolkit-%e6%9e%81%e7%ae%80%e6%a1%88%e4%be%8b3","status":"publish","type":"post","link":"https:\/\/www.vincedeck.top\/?p=269","title":{"rendered":"Redux Toolkit \u6781\u7b80\u6848\u4f8b#3"},"content":{"rendered":"\n<p>Redux Toolkit \u6781\u7b80\u793a\u4f8b\uff1aLet&#8217;s buy some ice-cream! \uff08Part 3\uff09<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. \u4e70\u51b0\u6fc0\u51cc\u662f\u8981\u4ed8\u94b1\u7684\uff01\u5904\u7406\u6570\u636e\u4e4b\u95f4\u7684\u5173\u7cfb<\/strong><\/h2>\n\n\n\n<p>\u5728\u4e0a\u4e00\u7ae0\uff0c\u5728\u9875\u9762\u4e0a\u70b9\u51fb <code>BuyIceCream<\/code> \u6309\u94ae\u540e\uff0c\u51b0\u6fc0\u51cc\u7684\u6570\u91cf\u589e\u52a0\u4e86\uff0c\u4f46\u662f\u94b1\u5374\u6ca1\u6709\u51cf\u5c11\u3002\u672c\u7ae0\u5c06\u5904\u7406\u8fd9\u4e2a\u95ee\u9898\uff0c\u540c\u65f6\u5b9e\u73b0\u9875\u9762\u4e0a\u91cd\u7f6e\u6309\u94ae\u7684\u529f\u80fd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3.1 \u6309\u4e0b\u8d2d\u4e70\u6309\u94ae\u540e\uff0c\u53d1\u751f\u4e86\u4ec0\u4e48\uff1f<\/strong><\/h3>\n\n\n\n<p>\u9996\u5148\u660e\u786e\uff0c\u6309\u4e0b\u8d2d\u4e70\u6309\u94ae\u540e\uff0c\u6309\u94ae\u5bf9\u5e94\u7684 <code>onClick={() => dispatch(buyIcecream())}<\/code> \u589e\u52a0\u4e86\u51b0\u6fc0\u51cc\u7684\u6570\u91cf\uff0c\u5374\u6ca1\u6709\u51cf\u5c11\u94b1\u7684\u6570\u91cf\u3002\u4e70\u51b0\u6fc0\u51cc\u4e0d\u4ed8\u94b1\uff0c\u8fd9\u53ef\u662f\u4e0d\u5141\u8bb8\u6ef4\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u8fd9\u4e2a\u6309\u94ae\u9700\u8981\u5b9e\u73b0\u4e24\u4ef6\u4e8b\u60c5\uff1a<\/p>\n\n\n\n<p>1. \u589e\u52a0\u51b0\u6fc0\u51cc\u7684\u6570\u91cf\uff1b<\/p>\n\n\n\n<p>2. \u51cf\u5c11\u94b1\u7684\u6570\u91cf\u3002\u5047\u8bbe\u4e00\u4e2a\u51b0\u6fc0\u51cc\u7684\u4ef7\u683c\u662f 1.5$, \u6211\u4eec\u9700\u8981\u4e00\u4e2a reducer \u51fd\u6570\u53bb\u5bf9\u5e94\u51cf\u5c11 <code>money<\/code> \u7684\u6570\u503c\u3002<\/p>\n\n\n\n<p>\u800c\u6211\u4eec\u76ee\u524d\u5e76\u6ca1\u6709\u80fd\u5b9e\u73b0\u8fd9\u4e00\u64cd\u4f5c\u7684 reducer \u51fd\u6570\u3002<\/p>\n\n\n\n<p>\u56de\u987e\u4e00\u4e0b\uff0c\u7b2c\u4e00\u7ae0 <code>money.js<\/code> \u4e2d\u5b9a\u4e49\u4e86\u4e24\u4e2a reducer \u51fd\u6570\uff0c\u5206\u522b\u662f\u5c06 <code>money<\/code> \u7684\u6570\u503c\u589e\u52a05\u6216\u8005\u51cf\u5c115\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u6211\u4eec\u9700\u8981\u65b0\u7684 reducer \u51fd\u6570\u6765\u5904\u7406\u8d2d\u4e70\u65f6\u94b1\u7684\u53d8\u5316\u3002\u540c\u65f6\uff0c\u6211\u4eec\u5e0c\u671b\u8fd9\u4e2a\u65b0\u7684 reducer \u51fd\u6570\u80fd\u591f\u63a5\u53d7\u51b0\u6fc0\u51cc\u7684\u4ef7\u683c\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3.2 \u5728 <code>money.js<\/code> \u4e2d\u65b0\u589e\u4e00\u4e2a\u80fd\u63a5\u53d7\u53c2\u6570\u7684 reducer \u51fd\u6570<\/strong><\/h3>\n\n\n\n<p>\u4e8b\u5b9e\u4e0a\uff0c\u5728\u5b9a\u4e49 reducer \u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7 <code>action.payload<\/code> \u6765\u83b7\u53d6\u4f20\u5165\u7684\u53c2\u6570\u3002<\/p>\n\n\n\n<p>\u5728 <code>money.js<\/code> \u4e2d\u5b9a\u4e49\u4e00\u4e2a <code>decreaseByAmount<\/code> \u7684 reducer \u51fd\u6570\uff0c\u548c\u4e4b\u524d\u4e0d\u540c\u7684\u662f\uff0c\u5b83\u7684\u53c2\u6570\u662f <code>(state, action)<\/code>\uff0c\u4ee5\u6b64\u8ba9\u6211\u4eec\u83b7\u53d6\u4f20\u5165\u53c2\u6570\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/store\/reducers\/money.js\n\n\/\/ ...\n\nexport const moneySlice = createSlice({\n    \/\/ ...\n    reducers: {\n        \/\/ ...\n        \/\/ \u53ef\u4ee5\u901a\u8fc7action.payload\u6765\u83b7\u53d6\u4f20\u5165\u7684\u53c2\u6570\n        decrementByAmount: (state, action) =&gt; {\n            state.value -= action.payload;\n        },\n    }\n})\n<\/code><\/pre><\/div>\n\n\n\n<p>\u4fee\u6539\u5b8c\u6210\u540e\uff0c\u522b\u5fd8\u4e86\u5bfc\u51fa\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/store\/reducers\/money.js\n\n\/\/ ...\nexport const { increment, decrement, decrementByAmount } = moneySlice.actions; \/\/ \u522b\u5fd8\u8bb0\u5bfc\u51fa decrementByAmount\nexport default moneySlice.reducer;<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3.3 \u4fee\u6539\u8d2d\u4e70\u6309\u94ae\u7684\u903b\u8f91<\/strong><\/h3>\n\n\n\n<p>\u63a5\u4e0b\u6765\uff0c\u5c31\u53ef\u4ee5\u4fee\u6539\u8d2d\u4e70\u6309\u94ae\u7684\u903b\u8f91\uff0c\u5b9e\u73b0\u51b0\u6fc0\u51cc\u6570\u91cf\u589e\u52a0\u548c\u94b1\u7684\u51cf\u5c11\u3002<\/p>\n\n\n\n<p>\u9996\u5148\u5728 <code>App.js<\/code> \u4e2d\u5f15\u5165 <code>decreaseByAmount<\/code>\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/App.js\n\n\/\/ ...\nimport { increment, decrement, decrementByAmount } from &#39;.\/store\/reducers\/money&#39;;\n\/\/ ...<\/code><\/pre><\/div>\n\n\n\n<p>\u7136\u540e\uff0c\u5728 <code>const App<\/code> \u4e2d\u65b0\u589e\u4e00\u4e2a\u51fd\u6570 <code>HandleBuyIcecream<\/code>\uff0c\u7528\u4ee5\u5b9e\u73b0\u51b0\u6fc0\u51cc\u6570\u91cf\u589e\u52a0\u548c\u94b1\u7684\u51cf\u5c11\u8fd9\u4e24\u4e2a\u52a8\u4f5c\uff0c\u5e76\u5c06\u5176\u4f20\u7ed9\u8d2d\u4e70\u6309\u94ae\u7684 <code>onClick<\/code> \u5c5e\u6027\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/App.js\n\n\/\/ ...\nconst App = () =&gt; {\n    \/\/ ...\n    const HandleBuyIcecream = () =&gt; {\n    \/\/ \u521b\u5efa\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4ee5\u5b9e\u73b0\u51b0\u6fc0\u51cc\u6570\u91cf\u589e\u52a0\u548c\u94b1\u7684\u51cf\u5c11\u8fd9\u4e24\u4e2a\u52a8\u4f5c\n        dispatch(buyIcecream());\n        dispatch(decrementByAmount(1.5));\n    }\n    return (\n        {\/* ... *\/}\n        &lt;button onClick={HandleBuyIcecream}&gt;Buy IceCream&lt;\/button&gt; &lt;br \/&gt;\n        {\/* ... *\/}\n    )\n}\n\n\/\/ ...<\/code><\/pre><\/div>\n\n\n\n<p>\u8fd9\u6837\u4e00\u6765\uff0c\u5c31\u80fd\u5728\u70b9\u51fb\u8d2d\u4e70\u6309\u94ae\u65f6\u89c2\u5bdf\u5230\u51b0\u6fc0\u51cc\u548c\u94b1\u540c\u65f6\u53d8\u5316\u4e86\uff01<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3.4 \u5b9e\u73b0 Reset \u6309\u94ae<\/strong><\/h3>\n\n\n\n<p>\u9875\u9762\u4e0a\u7684 Reset \u6309\u94ae\u7528\u4e8e\u5c06\u94b1\u548c\u51b0\u6fc0\u51cc\u7684\u6570\u91cf\u90fd\u91cd\u7f6e\u4e3a <code>0<\/code>\u3002\u540c\u6837\u5730\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u5728 <code>money.js<\/code> \u548c <code>icecream.js<\/code> \u4e2d\u5b9e\u73b0\u76f8\u5e94\u7684 reducer \u51fd\u6570\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/store\/reducers\/money.js\n\n\/\/ ...\n\nexport const moneySlice = createSlice({\n    \/\/ ...\n    reducers: {\n        \/\/ ...\n        \/\/ \u5b9e\u73b0 reset \u7684 case reducer\n        resetMoney: (state) =&gt; {\n            state.value = 0;\n        },\n    }\n})\n\n\/\/ \u8bb0\u5f97\u5bfc\u51fa resetMoney\nexport const { increment, decrement, decrementByAmount, resetMoney } = moneySlice.actions;\n\/\/ ...<\/code><\/pre><\/div>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/store\/reducers\/icecream.js\n\n\/\/ ...\n\nexport const icecreamSlice = createSlice({\n    \/\/ ...\n    reducers: {\n        \/\/ ...\n        \/\/ \u5b9e\u73b0 reset \u7684 case reducer\n        resetIcecream: (state) =&gt; {\n            state.value = 0;\n        },\n    }\n})\n\n\/\/ \u8bb0\u5f97\u5bfc\u51fa resetIcecream\nexport const { increment, resetIcecream } = icecreamSlice.actions;\n\/\/ ...<\/code><\/pre><\/div>\n\n\n\n<p>\u63a5\u4e0b\u6765\uff0c\u4fee\u6539 <code>App.js<\/code>\uff1a<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-lang=\"JavaScript\"><code>\/\/ src\/app.js\n\n\/\/ ...\nimport { increment, decrement, decrementByAmount, resetMoney } from &#39;.\/store\/reducers\/money&#39;; \/\/ \u5f15\u5165 resetMoney\nimport { increment as buyIcecream, resetIcecream } from &#39;.\/store\/reducers\/icecream&#39;; \/\/ \u5f15\u5165 resetIcecream\n\nconst App = () =&gt; {\n  \/\/ ...\n  const HandleReset = () =&gt; {\n    \/\/ \u521b\u5efa\u4e00\u4e2a\u51fd\u6570\uff0c\u7528\u4ee5\u5b9e\u73b0\u91cd\u7f6e\u7684\u52a8\u4f5c (*3.4)\n    dispatch(resetMoney());\n    dispatch(resetIcecream());\n  }\n\n  return (\n    \/\/ ...\n      {\/* \u5904\u7406reset button\u7684\u70b9\u51fb \uff08*3.4\uff09*\/}\n      &lt;button onClick={HandleReset}&gt;Reset&lt;\/button&gt;\n    \/\/ ...\n  );\n}\n\n\/\/ ...<\/code><\/pre><\/div>\n\n\n\n<p>\u8fd9\u6837\u4e00\u6765\uff0cReset \u6309\u94ae\u6b63\u5e38\u5de5\u4f5c\u4e86\uff01<\/p>\n\n\n\n<p>\u4ee5\u4e0a\u5185\u5bb9\u7684\u5b8c\u6574\u4ee3\u7801\u5728\u672c\u9879\u76ee\u7684 <a href=\"https:\/\/github.com\/peisong13\/redux_toolkit_example\/tree\/ChapterThree\">ChapterThree \u5206\u652f<\/a>\u3002<\/p>\n\n\n\n \n","protected":false},"excerpt":{"rendered":"<p>Redux Toolkit \u6781\u7b80\u793a\u4f8b\uff1aLet&#8217;s buy some ice-cream! \uff08Par &hellip; <a href=\"https:\/\/www.vincedeck.top\/?p=269\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cRedux Toolkit \u6781\u7b80\u6848\u4f8b#3\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[27,7],"tags":[28,29,30,32],"class_list":["post-269","post","type-post","status-publish","format-standard","hentry","category-react","category-7","tag-react","tag-redux","tag-redux-toolkit","tag-redux-toolkit-"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/posts\/269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=269"}],"version-history":[{"count":3,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/posts\/269\/revisions"}],"predecessor-version":[{"id":272,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=\/wp\/v2\/posts\/269\/revisions\/272"}],"wp:attachment":[{"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vincedeck.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}