{"id":69,"date":"2022-05-29T12:53:08","date_gmt":"2022-05-29T04:53:08","guid":{"rendered":"http:\/\/www.33weixin.com\/index\/?p=69"},"modified":"2022-05-29T14:53:32","modified_gmt":"2022-05-29T06:53:32","slug":"%e6%b7%b7%e5%90%88","status":"publish","type":"post","link":"http:\/\/www.33weixin.com\/index\/index.php\/2022\/05\/29\/%e6%b7%b7%e5%90%88\/","title":{"rendered":"\u6df7\u5408"},"content":{"rendered":"<h2 id=\"\u57fa\u7840\">\u57fa\u7840<\/h2>\n<p>\u6df7\u5408\u662f\u4e00\u79cd\u7075\u6d3b\u7684\u5206\u5e03\u5f0f\u590d\u7528 Vue \u7ec4\u4ef6\u7684\u65b9\u5f0f\u3002\u6df7\u5408\u5bf9\u8c61\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u7ec4\u4ef6\u9009\u9879\u3002\u4ee5\u7ec4\u4ef6\u4f7f\u7528\u6df7\u5408\u5bf9\u8c61\u65f6\uff0c\u6240\u6709\u6df7\u5408\u5bf9\u8c61\u7684\u9009\u9879\u5c06\u88ab\u6df7\u5165\u8be5\u7ec4\u4ef6\u672c\u8eab\u7684\u9009\u9879\u3002<\/p>\n<p>\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u6df7\u5408\u5bf9\u8c61<\/span>\n<span class=\"hljs-keyword\">var<\/span> myMixin = {\n  created: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n    <span class=\"hljs-keyword\">this<\/span>.hello()\n  },\n  methods: {\n    hello: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'hello from mixin!'<\/span>)\n    }\n  }\n}\n\n<span class=\"hljs-comment\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u4f7f\u7528\u6df7\u5408\u5bf9\u8c61\u7684\u7ec4\u4ef6<\/span>\n<span class=\"hljs-keyword\">var<\/span> Component = Vue.extend({\n  mixins: [myMixin]\n})\n\n<span class=\"hljs-keyword\">var<\/span> component = <span class=\"hljs-keyword\">new<\/span> Component() <span class=\"hljs-comment\">\/\/ -&gt; \"hello from mixin!\"<\/span>\n<\/code><\/pre>\n<h2 id=\"\u9009\u9879\u5408\u5e76\">\u9009\u9879\u5408\u5e76<\/h2>\n<p>\u5f53\u7ec4\u4ef6\u548c\u6df7\u5408\u5bf9\u8c61\u542b\u6709\u540c\u540d\u9009\u9879\u65f6\uff0c\u8fd9\u4e9b\u9009\u9879\u5c06\u4ee5\u6070\u5f53\u7684\u65b9\u5f0f\u6df7\u5408\u3002\u6bd4\u5982\uff0c\u540c\u540d\u94a9\u5b50\u51fd\u6570\u5c06\u6df7\u5408\u4e3a\u4e00\u4e2a\u6570\u7ec4\uff0c\u56e0\u6b64\u90fd\u5c06\u88ab\u8c03\u7528\u3002\u53e6\u5916\uff0c\u6df7\u5408\u5bf9\u8c61\u7684 \u94a9\u5b50\u5c06\u5728\u7ec4\u4ef6\u81ea\u8eab\u94a9\u5b50\u00a0<strong>\u4e4b\u524d<\/strong>\u00a0\u8c03\u7528 \uff1a<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-keyword\">var<\/span> mixin = {\n  created: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'mixin hook called'<\/span>)\n  }\n}\n\n<span class=\"hljs-keyword\">new<\/span> Vue({\n  mixins: [mixin],\n  created: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n    <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'component hook called'<\/span>)\n  }\n})\n\n<span class=\"hljs-comment\">\/\/ -&gt; \"\u6df7\u5408\u5bf9\u8c61\u7684\u94a9\u5b50\u88ab\u8c03\u7528\"<\/span>\n<span class=\"hljs-comment\">\/\/ -&gt; \"\u7ec4\u4ef6\u94a9\u5b50\u88ab\u8c03\u7528\"<\/span>\n<\/code><\/pre>\n<p>\u503c\u4e3a\u5bf9\u8c61\u7684\u9009\u9879\uff0c\u4f8b\u5982\u00a0<code>methods<\/code>,\u00a0<code>components<\/code>\u00a0\u548c\u00a0<code>directives<\/code>\uff0c\u5c06\u88ab\u6df7\u5408\u4e3a\u540c\u4e00\u4e2a\u5bf9\u8c61\u3002 \u4e24\u4e2a\u5bf9\u8c61\u952e\u540d\u51b2\u7a81\u65f6\uff0c\u53d6\u7ec4\u4ef6\u5bf9\u8c61\u7684\u952e\u503c\u5bf9\u3002<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-keyword\">var<\/span> mixin = {\n  methods: {\n    foo: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'foo'<\/span>)\n    },\n    conflicting: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'from mixin'<\/span>)\n    }\n  }\n}\n\n<span class=\"hljs-keyword\">var<\/span> vm = <span class=\"hljs-keyword\">new<\/span> Vue({\n  mixins: [mixin],\n  methods: {\n    bar: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'bar'<\/span>)\n    },\n    conflicting: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n      <span class=\"hljs-built_in\">console<\/span>.log(<span class=\"hljs-string\">'from self'<\/span>)\n    }\n  }\n})\n\nvm.foo() <span class=\"hljs-comment\">\/\/ -&gt; \"foo\"<\/span>\nvm.bar() <span class=\"hljs-comment\">\/\/ -&gt; \"bar\"<\/span>\nvm.conflicting() <span class=\"hljs-comment\">\/\/ -&gt; \"from self\"<\/span>\n<\/code><\/pre>\n<p>\u6ce8\u610f\uff1a\u00a0<code>Vue.extend()<\/code>\u00a0\u4e5f\u4f7f\u7528\u540c\u6837\u7684\u7b56\u7565\u8fdb\u884c\u5408\u5e76\u3002<\/p>\n<h2 id=\"\u5168\u5c40\u6df7\u5408\">\u5168\u5c40\u6df7\u5408<\/h2>\n<p>\u4e5f\u53ef\u4ee5\u5168\u5c40\u6ce8\u518c\u6df7\u5408\u5bf9\u8c61\u3002 \u6ce8\u610f\u4f7f\u7528\uff01 \u4e00\u65e6\u4f7f\u7528\u5168\u5c40\u6df7\u5408\u5bf9\u8c61\uff0c\u5c06\u4f1a\u5f71\u54cd\u5230\u00a0<strong>\u6240\u6709<\/strong>\u00a0\u4e4b\u540e\u521b\u5efa\u7684 Vue \u5b9e\u4f8b\u3002\u4f7f\u7528\u6070\u5f53\u65f6\uff0c\u53ef\u4ee5\u4e3a\u81ea\u5b9a\u4e49\u5bf9\u8c61\u6ce8\u5165\u5904\u7406\u903b\u8f91\u3002<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-comment\">\/\/ \u4e3a\u81ea\u5b9a\u4e49\u7684\u9009\u9879 'myOption' \u6ce8\u5165\u4e00\u4e2a\u5904\u7406\u5668\u3002 <\/span>\nVue.mixin({\n  created: <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> () <\/span>{\n    <span class=\"hljs-keyword\">var<\/span> myOption = <span class=\"hljs-keyword\">this<\/span>.$options.myOption\n    <span class=\"hljs-keyword\">if<\/span> (myOption) {\n      <span class=\"hljs-built_in\">console<\/span>.log(myOption)\n    }\n  }\n})\n\n<span class=\"hljs-keyword\">new<\/span> Vue({\n  myOption: <span class=\"hljs-string\">'hello!'<\/span>\n})\n<span class=\"hljs-comment\">\/\/ -&gt; \"hello!\"<\/span>\n<\/code><\/pre>\n<p class=\"tip\">\u8c28\u614e\u4f7f\u7528\u5168\u5c40\u6df7\u5408\u5bf9\u8c61\uff0c\u56e0\u4e3a\u4f1a\u5f71\u54cd\u5230\u6bcf\u4e2a\u5355\u72ec\u521b\u5efa\u7684 Vue \u5b9e\u4f8b\uff08\u5305\u62ec\u7b2c\u4e09\u65b9\u6a21\u677f\uff09\u3002\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u53ea\u5e94\u5f53\u5e94\u7528\u4e8e\u81ea\u5b9a\u4e49\u9009\u9879\uff0c\u5c31\u50cf\u4e0a\u9762\u793a\u4f8b\u4e00\u6837\u3002 \u4e5f\u53ef\u4ee5\u5c06\u5176\u7528\u4f5c [Plugins](plugins.html) \u4ee5\u907f\u514d\u4ea7\u751f\u91cd\u590d\u5e94\u7528<\/p>\n<h2 id=\"\u81ea\u5b9a\u4e49\u9009\u9879\u6df7\u5408\u7b56\u7565\">\u81ea\u5b9a\u4e49\u9009\u9879\u6df7\u5408\u7b56\u7565<\/h2>\n<p>\u81ea\u5b9a\u4e49\u9009\u9879\u5c06\u4f7f\u7528\u9ed8\u8ba4\u7b56\u7565\uff0c\u5373\u7b80\u5355\u5730\u8986\u76d6\u5df2\u6709\u503c\u3002 \u5982\u679c\u60f3\u8ba9\u81ea\u5b9a\u4e49\u9009\u9879\u4ee5\u81ea\u5b9a\u4e49\u903b\u8f91\u6df7\u5408\uff0c\u53ef\u4ee5\u5411\u00a0<code>Vue.config.optionMergeStrategies<\/code>\u00a0\u6dfb\u52a0\u4e00\u4e2a\u51fd\u6570\uff1a<\/p>\n<pre><code class=\"lang-js\">Vue.config.optionMergeStrategies.myOption = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">toVal, fromVal<\/span>) <\/span>{\n  <span class=\"hljs-comment\">\/\/ return mergedVal<\/span>\n}\n<\/code><\/pre>\n<p>\u5bf9\u4e8e\u5927\u591a\u6570\u5bf9\u8c61\u9009\u9879\uff0c\u53ef\u4ee5\u4f7f\u7528\u00a0<code>methods<\/code>\u00a0\u7684\u5408\u5e76\u7b56\u7565:<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-keyword\">var<\/span> strategies = Vue.config.optionMergeStrategies\nstrategies.myOption = strategies.methods\n<\/code><\/pre>\n<p>\u66f4\u591a\u9ad8\u7ea7\u7684\u4f8b\u5b50\u53ef\u4ee5\u5728\u00a0<a href=\"https:\/\/github.com\/vuejs\/vuex\" target=\"_blank\" rel=\"noopener\">Vuex<\/a>\u00a01.x\u7684\u6df7\u5408\u7b56\u7565\u91cc\u627e\u5230:<\/p>\n<pre><code class=\"lang-js\"><span class=\"hljs-keyword\">const<\/span> merge = Vue.config.optionMergeStrategies.computed\nVue.config.optionMergeStrategies.vuex = <span class=\"hljs-function\"><span class=\"hljs-keyword\">function<\/span> (<span class=\"hljs-params\">toVal, fromVal<\/span>) <\/span>{\n  <span class=\"hljs-keyword\">if<\/span> (!toVal) <span class=\"hljs-keyword\">return<\/span> fromVal\n  <span class=\"hljs-keyword\">if<\/span> (!fromVal) <span class=\"hljs-keyword\">return<\/span> toVal\n  <span class=\"hljs-keyword\">return<\/span> {\n    getters: merge(toVal.getters, fromVal.getters),\n    state: merge(toVal.state, fromVal.state),\n    actions: merge(toVal.actions, fromVal.actions)\n  }\n}\n<\/code><\/pre>\n<hr \/>\n<blockquote><p>\u539f\u6587\uff1a\u00a0<a href=\"http:\/\/vuejs.org\/guide\/mixins.html\" target=\"_blank\" rel=\"noopener\">http:\/\/vuejs.org\/guide\/mixins.html<\/a><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u57fa\u7840 \u6df7\u5408\u662f\u4e00\u79cd\u7075\u6d3b\u7684\u5206\u5e03\u5f0f\u590d\u7528 Vue \u7ec4\u4ef6\u7684\u65b9\u5f0f\u3002\u6df7\u5408\u5bf9\u8c61\u53ef\u4ee5\u5305\u542b\u4efb\u610f\u7ec4\u4ef6\u9009\u9879\u3002\u4ee5\u7ec4\u4ef6\u4f7f\u7528\u6df7\u5408\u5bf9\u8c61\u65f6\uff0c\u6240\u6709&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/posts\/69"}],"collection":[{"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":1,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/posts\/69\/revisions"}],"predecessor-version":[{"id":70,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/posts\/69\/revisions\/70"}],"wp:attachment":[{"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/media?parent=69"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/categories?post=69"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.33weixin.com\/index\/index.php\/wp-json\/wp\/v2\/tags?post=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}