{"id":285044,"date":"2017-04-16T16:05:30","date_gmt":"2017-04-16T12:05:30","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=285044"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=285044","title":{"rendered":"\u0424\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b"},"content":{"rendered":"<p>\u0412 \u0440\u0435\u0434\u0430\u043a\u0446\u0438\u044e \u043f\u0440\u0438\u0448\u043b\u043e \u043f\u0438\u0441\u044c\u043c\u043e: &quot;\u043d\u0435 \u043c\u043e\u0433\u043b\u0438 \u0431\u044b \u0432\u044b \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e \u0440\u0430\u0437\u044a\u044f\u0441\u043d\u0438\u0442\u044c&#8230;&quot;<\/p>\n<p>  <\/p>\n<p>\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0438\u0436\u0435 \u043f\u0440\u0430\u043a\u0442\u0438\u043a \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0449\u0443\u043f\u0430\u0442\u044c <a href=\"https:\/\/sourcegraph.com\/github.com\/comerc\/yobr\/-\/blob\/src\/components\/PostForm\/PostForm.js\">\u0442\u0443\u0442<\/a>.<\/p>\n<p><a name=\"habracut\"><\/a>  <\/p>\n<p>\u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u0431\u044b\u043b\u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u043d\u0430 \u043a\u043b\u0430\u0441\u0441\u0430\u0445:<\/p>\n<p>  <\/p>\n<pre><code class=\"javascript\">class Square extends React.Component {   constructor() {     super()     this.state = {       value: null,     }   }   render() {     const { value, onClick } = this.props     return (       &lt;button className=&quot;square&quot; onClick={onClick}&gt;         {value}       &lt;\/button&gt;     )   } }<\/code><\/pre>\n<p>  <\/p>\n<p>\u041f\u043e\u0442\u043e\u043c \u044f\u0432\u0438\u043b\u0438\u0441\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b:<\/p>\n<p>  <\/p>\n<pre><code class=\"javascript\">const Square = ({ value, onClick }) =&gt; {(   &lt;button className=&quot;square&quot; onClick={onClick}&gt;     {value}   &lt;\/button&gt; )}<\/code><\/pre>\n<p>  <\/p>\n<p>\u0412 \u0447\u0451\u043c \u0440\u0430\u0437\u043d\u0438\u0446\u0430? \u0412\u044b\u043a\u0438\u0434\u044b\u0432\u0430\u0435\u043c: \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u0438\u0435 \u043a\u043b\u0430\u0441\u0441\u0430, constructor(), render(), const \u0434\u043b\u044f \u0434\u0435\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0438\u0437\u0430\u0446\u0438\u0438 props, this. \u0410 \u0435\u0449\u0451 \u0438\u0441\u0447\u0435\u0437\u043b\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 \u2014 \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 stateless functional components.<\/p>\n<p>  <\/p>\n<p>\u041a\u0430\u043a \u0434\u0430\u043b\u044c\u0448\u0435 \u0436\u0438\u0442\u044c \u0431\u0435\u0437 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f: 1) \u0438\u043b\u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0430\u043c, \u0433\u0434\u0435 \u043d\u0435 \u043d\u0443\u0436\u043d\u043e \u0445\u0440\u0430\u043d\u0438\u0442\u044c \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435; 2) \u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043d\u0435\u0441\u0442\u0438 \u0432\u0441\u0451 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0432 \u0441\u0442\u043e\u0440 redux-\u0430 (\u043a\u0430\u043a \u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a \u043f\u0440\u0430\u0432\u0434\u044b). \u041b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u2014 \u044d\u0442\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0430\u0431\u0441\u0442\u0440\u0430\u043a\u0446\u0438\u0438, \u0442\u0440\u0435\u0431\u0443\u044e\u0449\u0438\u0439 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f. \u0410 \u0437\u0430\u0447\u0435\u043c? \u041d\u043e \u043f\u0440\u0438\u0434\u0451\u0442\u0441\u044f \u043f\u0440\u0435\u043e\u0434\u043e\u043b\u0435\u0442\u044c \u043a\u043e\u043d\u043d\u0435\u043a\u0442\u043e\u0431\u043e\u044f\u0437\u043d\u044c \u2014 \u043d\u0435 \u0442\u0430\u0449\u0438\u0442\u044c \u0432\u0441\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u0447\u0435\u0440\u0435\u0437 \u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0435 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b, \u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c connect() \u0434\u043b\u044f \u0434\u043e\u0447\u0435\u0440\u043d\u0438\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0432 \u043c\u043e\u043c\u0435\u043d\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0439\u0441\u0442\u0432. \u041a\u0441\u0442\u0430\u0442\u0438, \u043e\u0442\u043a\u0430\u0437\u0430\u0432\u0448\u0438\u0441\u044c \u043e\u0442 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0443\u043c\u043d\u044b\u0445 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432 \u0438 \u0442\u0443\u043f\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432, \u0443\u043f\u0440\u043e\u0449\u0430\u0435\u0442\u0441\u044f <a href=\"https:\/\/habrahabr.ru\/post\/326018\/\">\u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0435<\/a>.<\/p>\n<p>  <\/p>\n<p>\u0420\u0430\u0437\u043e\u0431\u0440\u0430\u043b\u0438\u0441\u044c, \u0430 \u043a\u0430\u043a \u0436\u0435 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u0442\u044c <a href=\"https:\/\/habrahabr.ru\/company\/redmadrobot\/blog\/318222\/\">PureComponent<\/a> \u043a \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u043c? \u041d\u0430 \u043f\u043e\u043c\u043e\u0449\u044c \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u0442 \u0442\u0435\u0445\u043d\u0438\u043a\u0430 <a href=\"https:\/\/facebook.github.io\/react\/docs\/higher-order-components.html\">Higher-Order Components<\/a>:<\/p>\n<p>  <\/p>\n<pre><code class=\"javascript\">\/\/ utils.js  export const pureComponent = (fn) =&gt; {   class Wrapper extends React.PureComponent {     render() {       return fn(this.props, this.context)     }   }   \/\/ \u043d\u0435 \u043d\u0430\u0434\u043e, \u0442.\u043a. \u043f\u043e\u0434\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u043d\u0430 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442 \u043a\u0430\u043a \u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442,   \/\/ \u0442\u0430\u043a \u0438 \u043e\u0431\u043e\u043b\u043e\u0447\u043a\u0443-PureComponent; \u043b\u0443\u0447\u0448\u0435 \u043d\u0430\u0437\u043d\u0430\u0447\u0430\u0442\u044c \u0441\u0440\u0430\u0437\u0443 \u043e\u0431\u043e\u043b\u043e\u0447\u043a\u0435 (\u0441\u043d\u0430\u0440\u0443\u0436\u0438)   \/\/ Wrapper.contextTypes = fn.contextTypes   Wrapper.displayName = fn.name   return Wrapper }<\/code><\/pre>\n<p>  <\/p>\n<p>\u041f\u0440\u043e contextTypes \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0447\u0438\u0442\u0430\u0442\u044c <a href=\"https:\/\/facebook.github.io\/react\/docs\/context.html\">\u0442\u0443\u0442<\/a>: &quot;If contextTypes is not defined, then context will be an empty object&quot;.<\/p>\n<p>  <\/p>\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f:<\/p>\n<p>  <\/p>\n<pre><code class=\"javascript\">import { pureComponent } from 'utils'  const Square = ({ value, onClick }) =&gt; {(   &lt;button className=&quot;square&quot; onClick={onClick}&gt;     {value}   &lt;\/button&gt; )}  export default pureComponent(Square)<\/code><\/pre>\n<p>  <\/p>\n<h5 id=\"rekomenduemye-stati\">\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u043c\u044b\u0435 \u0441\u0442\u0430\u0442\u044c\u0438<\/h5>\n<p>  <\/p>\n<ul>\n<li><a href=\"https:\/\/habrahabr.ru\/company\/mailru\/blog\/213455\/\">\u0421\u0442\u0440\u0435\u043b\u043e\u0447\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438<\/a><\/li>\n<li><a href=\"https:\/\/habrahabr.ru\/company\/mailru\/blog\/303456\/\">\u0420\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 Redux<\/a><\/li>\n<\/ul>\n<p> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habrahabr.ru\/post\/326610\/\"> https:\/\/habrahabr.ru\/post\/326610\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 \u0440\u0435\u0434\u0430\u043a\u0446\u0438\u044e \u043f\u0440\u0438\u0448\u043b\u043e \u043f\u0438\u0441\u044c\u043c\u043e: &quot;\u043d\u0435 \u043c\u043e\u0433\u043b\u0438 \u0431\u044b \u0432\u044b \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e \u0440\u0430\u0437\u044a\u044f\u0441\u043d\u0438\u0442\u044c&#8230;&quot;<\/p>\n<p>  <\/p>\n<p>\u041f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0445 \u043d\u0438\u0436\u0435 \u043f\u0440\u0430\u043a\u0442\u0438\u043a \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0449\u0443\u043f\u0430\u0442\u044c <a href=\"https:\/\/sourcegraph.com\/github.com\/comerc\/yobr\/-\/blob\/src\/components\/PostForm\/PostForm.js\">\u0442\u0443\u0442<\/a>.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-285044","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/285044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=285044"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/285044\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=285044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=285044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=285044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}